Final Exam
What star color is the highest temperature?
Blue
What is the atomic number, atomic mass, protons, electrons, and neutrons Calcium-42?
20, 42, 20, 20, 22
Correctly balance the decay reaction. 230/90Th->0/-1e+
230/91Pa
You put 1 g of Salt into 1 L of water and stir. The resulting liquid is an example of
A solution
Which of the following will conduct an electric current?
A water solution of an ionic compound
Which would have a pH more than 7? A) Carbonic Acid B) Pure Water C) Sodium Chloride Solution D) Sodium Hydroxide Solution
D) Sodium Hydroxide Solution
Whose theory which included the work of Democritus, Proust, and Lavoisier
Dalton
Who originally came up with the idea of the atom?
Democritus
The father of the periodic table is
Dmitri Mendeleev
Classify, write the equation in symbols and balance: Potassium chloride + Silver Nitrate ---> Potassium Nitrate + Silver Chloride
Double Displacement KCl + AgNO3 ---> KNO3 + AgCl
Examples of compounds
Dry ice ( solid carbon dioxide), ethyl alcohol, Hydrogen sulfide, salt
One of the following planets is more dense than the others A) Saturn B) Jupiter C) Mars D) Earth
Earth
Pure substances may either be compounds or
Elements
A dip of vanilla ice cream is a pure substance. True or False?
False
An alpha particle is really a high-energy electron ejected from the Nucleus. True or False?
False
Earth's atmosphere is composed chiefly of nitrogen, oxygen and carbon dioxide. True or False?
False
Is this true or false? Elements in the same row of the periodic table exhibit similar chemical properties
False
It is impossible to theorize about the formation of the solar system because no other planetary systems can be observed.
False
Nuclear power reactors cannot explode like an atom bomb because there isn't enough of the fissionable U-235 in a reactor to maintain a chain reaction. True or False?
False
Red giants are enormously bright because they are extremely hot. True or False
False
The average temperature of the earth is slightly lower in January because then the earth is at its greatest distance from the sun. True or False?
False
The interior of the earth is molten from the heat produced by the intense bombardment the earth experienced during its formation. True or False?
False
Venus, the sister planet to the Earth, has an atmosphere whose composition is similar to that of Earth. True or False
False
When U-238 undergoes beta-decay, the product is Np-239. True or False
False
When a massive star exhausts its supply of hydrogen fuel, it becomes a supernova. True or False?
False
X undergoes radioactive decay to Y with a half-life of five minutes. After 10 minutes, the sample of X has completely decayed to Y. False or true?
False
X undergoes radioactive decay to Y with a half-life of five minutes. After 10 minutes, the sample of X has completely decayed to Y. True or False
False
Which one of the following elements is a transition element? As Pb H Fe Sr
Fe
iron (II) Chlorate
Fe(ClO3)2
The chemical formula for iron (II) nitrite is
Fe(NO2)2
The chemical formula for iron (II) nitrate is
Fe(NO3)2
The chemical formula for iron(II) nitrate is
Fe(NO3)2
iron (iii) sulfite
Fe2(SO3)3
A person traveling westward across the International Date Line gains a day. True or False?
True
Airline crews receive roughly three times the background radiation of those of us who spend most of our time on the ground. True or False
True
Airline crews receive roughly three times the background radiation of those of us who spend most of our time on the ground. True or False?
True
Is this true of false? The word "halogen" comes from the Greek, meaning "salt-former.
True
Isotopes with an even number of both protons and neutrons are generally stable. True or False
True
Isotopes with an even number of both protons and neutrons are generally stable. True or False?
True
Photographs of the surface of Mars provides evidence that liquid water once flowed on its surface. True or False?
True
The sun has hundreds of times more mass than all the rest of the solar system. True or False
True
The temperature on the surface of Venus is hot enough to melt lead. True or False?
True
Which one of these represents a chemical change? Cutting a bar of sodium metal into pieces with a knife Melting butter Boiling water to form steam Turning hair yellow with bleach Mixing powdered charcoal and oxygen at room temperature
Turning hair yellow with bleach
Which of these chemical equations describes a metal displacement reaction? 2NaN3(s) ? 2Na(s) + 3N2(g) 3NO2(g) + H2O(l) ? 2HNO3(aq) + NO(g) 2ZnS(s) + 3O2(g) ? 2ZnO(s) + 2SO2(g) 2P(s) + 3Cl2(g) ? 2PCl3(g) Fe2O3(s) + 2Al(s) ? 2Fe(s) + Al2O3(s)
Fe2O3(s) + 2Al(s) ? 2Fe(s) + Al2O3(s)
Which radiation has no electric charge associated with it?
Gamma
Condensation refers to which conversion?
Gas to liquid
The smallest particle of oxygen that behaves like oxygen is an oxygen
atom
The number of protons in an atom is equal to the
atomic number
The correct name for Ba(OH)2 is
barium hydroxide
Water containing large amounts of Mg2+ and Ca2+ ions is said to be hard
because it is hard to make soap lather in the water.
Water containing large amounts of Mg2+ and Ca2+ ions is said to be hard
because it is hard to make soap lather in water.
A hydrogen atom could emit a
beta particle
A high speed particle ejected from the nucleus is
beta particle (electron)
The earth, other planets, and the rest of the Solar System formed
billions of years ago from elements created in many previously existing stars.
In the sun, energy is formed when hydrogen atoms
combine
The reaction 2 Mg + O2 ? 2 MgO is an example of
combustion, oxidation, and combination
The reaction 2 Mg + O2-> 2 MgO is an example of
composition
The absolute magnitude
considers the brightness of a star when at a standard distance.
What is the correct name for the compound, CuCl2?
copper(II) chloride
The volume of a substance is an
extensive property.
The sum of the coefficients must be the same on both sides of a chemical equation. true or false?
false
true or false? The sum of the coefficients must be the same on both sides of a chemical equation.
false
true or false? When balancing a chemical equation, you need to change subscripts to make the number of atoms of an element the same on both sides of the equation.
false
The density of the planet Saturn is so low that it would
float in water.
the presence of solute molecules makes a solution
freeze at a lower temperature than the pure solvent.
A lunar eclipse can only occur during which phase of the moon?
full
The source of energy in the Sun is
fusion
Which type of nuclear process requires an extremely high temperature (millions of degrees)?
fusion reaction
The rule "like dissolves like" explains why liquids are
generally soluble in other liquids and gases are soluble in one another
The vertical columns of the periodic table are called
groups
The elements in Group 7A (17) are known by what name?
halogens
Matter can be defined as anything that
has mass and volume
atoms have no charge because they
have an equal number of electrons and protons
A mixture of flour and water is called a ______________________ mixture because the substances do not dissolve.
heterogeneous
if a sample of matter contains more than one part or phase, the sample is
heterogeneous
A solution is a
homogeneous mixture of two or more substances.
Latitude is a measure of
how far north or south one is from the equator.
The dye litmus turns blue
in basic solutions.
A bottle of whiskey contains 40% alcohol by volume. This means that the whiskey contains 40 mL of alcohol
in every 100 mL of whiskey
The solubility of a gas in water decreases as the water temperature
increases.
The density of a substance is an
intensive property.
The formation of an ionic bond
involves a transfer of one or more electrons, results in a release of energy, and helps atoms achieve a noble gas electron arrangement.
The reaction between water solutions of sodium chloride and silver nitrate produces a precipitate: NaCl(aq) + AgNO3(aq) ? NaNO3(aq) + AgCl(s). This is an example of
ion exchange
The reaction between water solutions of sodium chloride and silver nitrate produces a precipitate: NaCl(aq) + AgNO3(aq) ® NaNO3(aq) + AgCl(s). This is an example of
ion exchange
A Geiger counter indirectly measures radiation by measuring
ions produced
Rutherford concluded from his calculations that the volume of an atom
is mostly empty space.
A solution with a pH of 2
is one tenth as acidic as a solution with a pH of 1.
Waxing Crescent phase
is the phase of the Moon tonight.
soap is able to dissolve grease because
it has a polar end and a nonpolar end
Ice floats in water because
its density is less than that of water
In a chemical equation, the reactants are found on the
left side of the arrow.
Most of the stars plotted on a H-R diagram are
main sequence stars
What is the name of Mn(CO3)2?
manganese (IV) carbonate
Most of the earth's mass is contained in the
mantle
The amount of matter in an object is best expressed by its
mass
Matter is anything that has
mass and occupies space.
A light year is a
measure of astronomical distance.
In replacement reactions metals are usually replaced by
metals or hydrogen
Remnants of asteroids or comets that survive the trip through the earth's atmosphere to strike the surface are called
meteorites
A solution is a homogeneous
mixture
The tides are caused by the gravitation pull of the _____ on the earth.
moon
When a solvent is cooled, it will dissolve
more gas
Polar compounds such as alcohol would be expected to be
more soluble in water than in non-polar solvents.
Compared to magnitude 2 star, a star with a magnitude of 1 is
more than twice as bright
A symbol for an element always has a capital letter and sometimes a lower case letter. These letters are related to the element's
name
A substance with a pH of 7 is
neutral
Different isotopes of an element have different numbers of its
neutrons
The difference in mass of isotopes of the same element is due to the number of ______ in the nucleus.
neutrons
During which phase of the moon would we most likely see a solar eclipse?
new
The presence of an oceanic trench, a chain of volcanic mountains along the edge of a continent, and deep-seated earthquakes is characteristic of
ocean-continent plate convergence.
A protostar is an accumulation
of gases in outer space that will become a star.
According to the quantum mechanical model, electrons exist in
orbitals
The tectonic plates include Euroasian, African, North American, South American and
pacific
The horizontal row is called
period
What is the name of PCl3?
phosphorus trichloride
When a substance changes and still retains its original properties the change is called
physical
Grinding quartz crystals down to produce sand is an example of a
physical change
The slow wobble of the earth's axis is called
precession
The atomic number of an element is the number of
protons and electrons
Knowing chemical properties will tell you how that substances
reacts with other substances
For the last 3 billion years the surface of the moon has been
relatively quiet
A measure of radiation that takes into account the possible biological damage produced by different types of radiation is called a
rem
The reaction: 2 NaI + Cl2 ? 2 NaCl + I2 is an example of
replacement
The reaction: 2 NaI + Cl2 ® 2 NaCl + I2 is an example of
replacement
Isotopes of an element are atoms that have
same number of protons but different number of neutrons
When no more of a solute will dissolve in a solvent, the solution is said to be
saturated
The theory that explains the widening of the ocean is called
sea-floor spreading
If you were flying east on a jet across three times zones and your watch read 12:00 noon when you landed, you should
set it to 3:00 PM
AgClO3
silver chlorate
A radioactive decay reaction produces a
simpler, more stable nucleus than the reactant nucleus.
Which one of the following represents a chemical change? sugar dissolving in hot coffee heating water to form steam mixing sugar and cinnamon cutting a bar of sodium metal into pieces with a knife sliced apples, in contact with air, turning brown
sliced apples, in contact with air, turning brown
Na2CO3
sodium carbonate
Na2s
sodium sulfide
Which state of matter will hold it shape without a container?
solid
In liquid solutions, the solute is
solid, liquid, gas
the solution concentration of parts per million, % by volume, % by weight are concerned with?
solute in the solution
The Milky Way galaxy is
spiral
The moon's light is from the
sun
Hot, molten rock, welling up from the earth's interior, spreads the ocean floor, causing
the continents to drift apart.
In which part of a newborn star does the fusion reaction occur?
the core
The phases of the moon depend upon where the _____ is/are located.
the earth, moon, and sun
Robert Millikan discovered that
the electron carries the smallest unit of electrical charge.
Hydrogen bonding in water accounts for
the fact that snowflakes are 6-sided, water's higher than expected boiling temperature, and the fact that ice floats in liquid water.
Because of our belief in the law of conservation of mass, it seems reasonable that
the number of atoms of reactants must equal the number of atoms of products
A scale of values that expresses the hydronium (hydrogen) ion concentration of a solution is known as
the pH scale
a scale of values that expresses the hydronium (hydrogen) ion concentration of a solution is known as
the pH scale
When Rutherford found that some of the alpha particles fired at the gold foil were widely deflected, he concluded that
the positive charge in an atom is concentrated in a tiny nucleus.
When no more of a solute will dissolve in a solvent,
the solution is said to be saturated.
The asteroids forming a belt between the orbits of Mars and Jupiter were prevented from forming a planet by
the strong gravitational field of Jupiter.
The fact that there are seasons on the earth is largely due to
the tilt of the earth's axis
The San Andreas Fault is the site of a
transform boundary.
Nickel, Iron and copper are all classified as
transition metals
The lower layer of the atmosphere where weather occurs is called
troposphere
true or false? When balancing a chemical equation, the number of H atoms in 2 CH4 is eight.
true
In all power plants the ____turns the generator.
turbine
What planet has its axis of rotation tilted so much that it appears to rotate on its side?
uranus
Consistent with vanadium being a transition metal, the name for VSO4 should be
vanadium(II) sulfate
The amount of space a substance occupies is its
volume
a hydrogen bond is
what holds the atoms of a water molecule together
Which of the following does not represent a chemical change? bread rises when baking fermentation of sugar to alcohol when cooled, liquid water becomes ice a freshly cut apple turns brown milk turns sour on standing at room temperature
when cooled, liquid water becomes ice
The number of degrees of arc that Polaris is above the horizon depends on
your latitude
The division between metals and nonmetals is a
zigzag
The alkali metal elements are found in _______ of the periodic table.
Group 1A
ammonium carbonate
(NH4)2CO3
Hydrogen bonding in water accounts for
-Water's higher than expected boiling temperature -the fact that ice floats in liquid water. -the fact that snowflakes are 6-sided
The amount of radiation we are naturally exposed to during a year is nearly
0.150 Rem
What is the most likely temperature of the water at the bottom of Lake Superior in the winter?
4ºC
The core of a typical star contains what fraction of the star's mass?
50%
The Lanthanide series is in Period
6
The equation 2 C2H5OH + __O2 ® 4 CO2 + 6 H2O is balanced by making the coefficient of oxygen
6
When the equation __Li + __O2 ® __Li2O is correctly balanced, what is the sum of the coefficients
7
What is the formula weight of aluminum hydroxide, Al(OH)3?
78
The formula weight of aluminum hydroxide, Al(OH)3 is
78 u
What is the atomic number, atomic mass, protons, electrons, and neutrons oxygen-16?
8, 16, 8, 8, 8
What is the atomic number, atomic mass, protons, electrons, and neutrons oxygen-17?
8, 17, 8, 8, 9
When radium (atomic number 88) emits an alpha particle, the remaining nucleus has an atomic number of
86
Balance the following equation using the smallest set of whole numbers, then add together the coefficients. Don't forget to count coefficients of one. The sum of the coefficients is _____Cr + _______H2SO4 --> ______Cr2(SO4)3 + _______H2
9
examples of heterogeneous mixtures
A big Mac hamburger, milk, concrete, Apple, paint
Barium Hydroxide
Ba(OH)2
Copper (II) chlorite
Cu(ClO2)2
When the value of something does not depend on the amount of the matter, what is this called?
Intensive property
The solution concentration of parts per million, % by volume, % by weight are concerned with?
Solute in the solution
When two things dissolve in each other the_____ dissolves into the_______ forming a ____.
Solute, solvent, solution
Which of the following are properties of basic solutions? They turn the dye litmus red. They feel slippery. They taste sour. They react with active metals to produce hydrogen gas.
They feel slippery.
Who discovered the electron and measured its charge to mass?
Thomson
When 40/19 K undergoes beta-decay, the product is 40/18 Ar. True or False?
True 40/19K+0/-1e->40/18Ar
The last natural element is
Uranium (U)
Gold is usually found in a pure form and nature because it is
Very unreactive
CaF2
calcium fluoride
The phase of the moon between new and 1st quarter is
crescent
What is mass divided by volume?
density
The earth rotates
from west to east.
Boiling point and melting point are
intensive properties.
More massive stars tend to use up their supply of hydrogen more rapidly than
less massive stars.
Mg(NO3)2
magnesium nitrate
Which one of the following represents a chemical change? water disappears from a beaker in a few days at room temperature water boils below 100ºC on a mountainAnswer Key lard when heated changes to liquid milk turns sour in a few days at room temperature sugar dissolving in water
milk turns sour in a few days at room temperature
Freezing is the change of state
of liquid to solid.
Where a main sequence star is located on the H-R diagram depends only on its
temperature
What is the name of P4Se3?
tetraphosphorus triselenide
The difference in brightness between two stars is related to
the amount of light and energy produced by the stars.
The findings from the Apollo space missions to the moon support the idea that
the moon formed from the impact of the earth with a very large object.
We always see the same side of the moon because
the moon's periods of rotation and revolution are the same.
Evidence that the earth is rotating is provided by
the motion of a pendulum
Most of the radioactivity we personally encounter comes from
the natural environment
Aluminum Nitrate
Al(NO3)3
Matter is mostly empty space Said
Rutherford
Tin (IV) Sulfide
SnS2
zinc phosphate
Zn3(PO4)2
AlN
aluminum nitride
The law of conservation of mass states that mass cannot be
created or destroyed
The energy released by the sun is the result of
nuclear fusion
What is the formula for the ionic compound formed by magnesium and iodine?
MgI2
The formula for magnesium sulfate is
MgSO4
The mass of the proton is______the mass of electron.
More than
Which of the following statements about comets is not true? Comets are thought to be dirty snowballs. The birthplace of comets is a cloud of icy, dusty aggregates beyond the orbit of Pluto Most comets have elliptical orbits with periods around one hundred years. The tail of a comet consists of dust and evaporated ices.
Most comets have elliptical orbits with periods around one hundred years.
Is a strong acid a concentrated solution of the acid?
NO
sodium oxide
Na2O
The formula for sodium sulfide is
Na2S
Nickel (II) Phosphate
Ni3(PO4)2
Which one of the following elements is a transition element? Sodium Calcium Sulfur Tin Nickel
Nickel
The quantum number in indicates
energy level
Balance the equation: __ZnSO4+Li2CO3-->__ZnCO3+__Li2SO4
Already Balanced
This type of radiation is really the nucleus of a helium atom.
Alpha-He
Suppose you started with 500 g of substance X. After 3 days, 125 g of substance X remains. The half-life of X is
1.5 days
The radioactive isotope Z has a half-life of 12 hours. After 2 days, the fraction of the original amount remaining is
1/16
The expected life span of a star the size of the sun is
10 billion years
Correctly balance this nuclear fission reaction. 1/0n+235/92U->131/53I+3|1/0n+
102/39Y
What is the coefficient of H2O when the following equation is properly balanced with smallest set of whole numbers? ___ Al4C3 + ___ H2O ? ___ Al(OH)3 + ___ CH4
12
What is the number of oxygen atoms in Al2(SO4)3?
12
About how old is the universe?
13.7 billion years
Calculate the molecular mass of potassium permanganate, KMnO4.
158 amu
The formula weight of methane, CH4 is
16 u
What is the formula weight of methane, CH4?
16 u
Electron Configuration Phosphorus
1s2 2s2 2p6 3s2 3p3
What is the electron configuration for silicon?
1s22s22p63s23p2
What is the electron configuration for tungsten?
1s22s22p63s23p634s23d104p65s24d105p66s14f145d5
What is the electron configuration for bromine?
1s22s22p63s23p63d104s24p5
What is the coefficient of H2O when the following equation is properly balanced with the smallest set of whole numbers? ___ Na + ___ H2O ? ___ NaOH + ___ H2
2
Which of these chemical equations describes a hydrogen displacement reaction? 2C2H6(g) + 7O2(g) ? 4CO2(g) + 6H2O(l) N2(g) + 3H2(g) ? 2NH3(g) CaBr2(aq) + H2SO4(aq) ? CaSO4(s) + 2HBr(g) 2Al(s) + 3H2SO4(aq) ? Al2(SO4)3(aq) + 3H2(g) 2KBr(aq) + Cl2(g) ? 2KCl(aq) + Br2(l)
2Al(s) + 3H2SO4(aq) ? Al2(SO4)3(aq) + 3H2(g)
Which of these chemical equations describes a combustion reaction? 2Na(s) + 2H2O(l) ? 2NaOH(aq) + H2(g) 2Al(s) + 3H2SO4(aq) ? Al2(SO4)3(aq) + 3H2(g) N2(g) + 3H2(g) ? 2NH3(g) 2C2H6(g) + 7O2(g) ? 4CO2(g) + 6H2O(l) LiOH(aq) + HNO3(aq) ? LiNO3(aq) + H2O(l)
2C2H6(g) + 7O2(g) ? 4CO2(g) + 6H2O(l)
Which of these chemical equations describes a halogen displacement reaction? CaBr2(aq) + H2SO4(aq) ? CaSO4(s) + 2HBr(g) 2LiOH(aq) + H2SO4(aq) ? Li2SO4(aq) + 2H2O(l) 2KBr(aq) + Cl2(g) ? 2KCl(aq) + Br2(l) 2KNO3(s) ? 2KNO2(s) + O2(g) 2Na(s) + 2H2O(l) ? 2NaOH(aq) + H2(g)
2KBr(aq) + Cl2(g) ? 2KCl(aq) + Br2(l)
Balance the equation: ___NaNo3 + ____PbO-->____Pb(NO3)2+____Na2O
2NaNo3 + PbO-->Pb(NO3)2+Na2O
Balance the equation below using the smallest set of whole numbers. What is the coefficient of H2O? ___ PCl3(l) + ___ H2O(l) ? ___ H3PO3(aq) + ___ HCl(aq)
3
What is the coefficient of H2SO4 when the following equation is properly balanced with the smallest set of whole numbers? ___ Ca3(PO4)2 + ___ H2SO4 ? ___ CaSO4 + ___ H3PO4
3
When balanced with the smallest set of whole numbers, the coefficient of O2 in the following equation is: _____C2H4 + _____O2--> _____CO2 + _____H2O
3
Balance the equation: ___AgBr+___GaPO4-->__Ag3PO4+__GaBr3
3AgBr+GaPO4-->Ag3PO4+GaBr3
Balance the equation: ____H2SO4+___B(OH)3-->___B2(SO4)3+___H2O
3H2SO4+2B(OH)3-->B2(SO4)3+6H2O
What is the mass percent of sodium in washing soda, Na2CO3?
43.4%
When thorium (atomic number 90) loses a beta particle, it becomes atomic number
91
A bottle of vinegar is 4% by weight so you know it has 4 units of pure vinegar per?
96 units of water
A bottle of vinegar is 4% by weight, so you know that the solution contains 4 units of pure vinegar per
96 units of water
A solution is
A homogeneous mixture of two or more substances
Which of the following is an example of a physical change? A. Dissolving salt in water B. Burning wood into charcoal C. Cooking an egg D. Rusting iron
A. Dissolving salt in water
What element is represented by the electron configuration 1s22s22p63s23p63d104s24p64d105s1?
Ag
The symbols for silver, gold, copper and zinc are:
Ag, Au, Cu, and Zn
Aluminum nitride
AlN
Examples of physical change
Alcohol Evaporating, melting butter, kicking a football, ice melting, salt dissolving in water, hammering hot iron into a sheet
Adams or elements are _______, but atoms and compounds are_______.
Alike, different
The name of column 1 is
Alkali Metals
Which of the following are properties of acidic solutions? They taste sour. They turn the dye litmus red. All of these are true. They react with active metals to produce hydrogen gas.
All of these are true.
This type of radiation is released when 224/86 Rn decays to 220/84 Po
Alpha
What type of radiation is released when Rn-224 decays to Po-220?
Alpha
what type of radiation is really the nucleus of a helium atom?
Alpha
Which of the following is most likely to be radioactivity? A. a nucleus with even numbers of protons and neutrons B. A nucleus with odd number of protons and neutrons C. A nucleus with the same number of protons and neutrons D. Protons and neutrons have nothing to do with radioactivity
B. A nucleus with odd number of proton and neutrons
Which of the following is an example of a gas liquid Mixture? A. The air we breathe B. a carbonated drink C. Soap suds D. Ice cubes
B. a carbonated drink
Which of the following is an example of a chemical change? A. Ice Melting B. Paint fading C. Pounding gold into a coin D. Puddle of water evaporating
B. paint fading
Which statement about the atomic nucleus is correct? A. The nucleus is made of protons and neutrons and has a negative charge B. The nucleus is made of protons and neutrons and has a positive charge C. The nucleus is made of electrons and has a positive charge D. The nucleus is made of electrons and has a negative charge
B. the nucleus is made of protons and neutrons and has a positive charge
Which of the following about Jupiter is not true? Jupiter is mostly made of light elements like hydrogen and helium. Much of the planet is composed of hydrogen compressed so greatly that it is liquid. The colored bands in Jupiter's atmosphere are believed to result from atmospheric convection Because Jupiter is mostly hydrogen, it is only slightly more massive than the earth.
Because Jupiter is mostly hydrogen, it is only slightly more massive than the earth.
What is a high-energy electron ejected from the nucleus?
Beta Particles
If you wanted to find the age of a fossil bone, which isotope would you use?
C-14
Which is not a part of Dalton's theory? A. All matter is composed of Atoms B. Atoms cannot be broken apart C. Isotopes of the same elements have different masses D. Atoms of different elements are different
C. Isotopes of the same element have different masses
Which of the following is not an example of a physical property? A. Freezing point be. Boiling point C. Reactivity D. Density
C. Reactivity
carbon tetrachloride
CCl4
What is the formula for the ionic compound formed by calcium ions and nitrate ions?
Ca(NO3)2
Which one of the following formulas of ionic compounds is the least likely to be correct?
Ca2NO3
The formula for calcium phosphate is
Ca3(PO4)2
calcium bromide
CaBr2
What is the formula for the ionic compound formed by calcium and selenium?
CaSe
The science of what matter is made of and how it changes is called
Chemistry
Cobalt (III) Nitrate
Co(NO3)3
CuF2
Copper (II) fluoride
What element is represented by the electron configuration 1s22s22p63s23p63d54s1?
Cr
chromium (III) acetate
Cr(C2H3O2)3
Copper hydroxide
Cu(OH)2
Which is the correct formula for copper(II) phosphate?
Cu3(PO4 )2
Which is the correct formula for copper (II) phosphate?
Cu3(PO4)2
Write a general location on the periodic table for these: Metals, nonmetals, metalloids, groups, periods, halogens, noble gases, transition metals, and alkali metals.
Groups are the horizontal columns. Periods are the vertical rows. Metalloids are the zigzag line separating metals and nonmetals starting with boron. Nobles gases is group 18. Halogens are group 17. Transition metals are group 3 to 10. Non-metals are to the right of the table. Alkali metals are group 1.
What is the general location on the periodic table for these: metals, nonmetals, metalloids, groups, periods, halogens, noble gases, transition metals, and alkali metals.
Groups are the horizontal columns. Periods are the vertical rows. Metalloids are the zigzag line separating metals/nonmetals starting with Boron. Noble gases is group 18. Halogens are group 17. Transition metals are group 3 to 10. Non-metals are to the right of the table. Alkali metals are group 1.
Which of the following is the formula for hydrobromic acid?
HBr
hydrochloric acid
HCl
Examples of physical intensive
Heat conductivity, is red, dissolves in gasoline, is Malleable , brittleness, conducts electricity, boils at 88 Celsius, is Ductile
Examples of elements
Iron nail, calcium, copper, aluminum foil, arsenic
Compared to a star like the sun, a blue-white star
Is more massive, has a higher surface temperature, and burns its fuel at a greater rate
Which element has the following ground-state electron configuration, 1s22s22p63s2?
Mg
All of the following are properties of sodium. Which one is a physical property of sodium? When placed in water it sizzles and a gas is formed. It is a solid at 25ºC and changes to a liquid when heated to 98ºC. It's surface turns black when first exposed to air. When placed in contact with chlorine it forms a compound that melts at 801ºC. Sodium is never found as the pure metal in nature.
It is a solid at 25ºC and changes to a liquid when heated to 98ºC.
Which of the following is true about the surface of Mars? There are numerous active volcanoes. It is much too cold for liquid water to exist. The polar ice caps are frozen water. The greenish areas are due to low, scrubby vegetation
It is much too cold for liquid water to exist.
During which month of the year does the earth receive the greatest average energy from the sun?
January
Which one of the following planets does not belong with the others? Mars Jupiter Mercury Venus
Jupiter
Potassium oxide
K2O
Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?
KMnO4
Matter cannot be created nor destroyed said Lavoisier. This is called the
Law of conservation of mass
PbSO4
Lead (II) Sulfate
Which of these is an example of a physical property? Toxicity of cyanide Neutralization of stomach acid with an antacid Corrosiveness of sulfuric acid Lead becomes a liquid when heated to 601°C Flammability of gasoline
Lead becomes a liquid when heated to 601°C
Examples of physical extensive
Length, is 1.5 m long
Lithium Carbonate
Li2CO3
Which of these reactions is an acid-base reaction? N2 + 3H2 --> 2 NH3 LiOH + HNO3 --> LiNO3 + H2O C2H6 + 7O2---> 4CO2 + 6H2O 2 Na + 2 H2O --> 2NaOH + H2
LiOH + HNO3 --> LiNO3 + H2O
Which of these chemical equations describes an acid-base neutralization reaction? 2KBr(aq) + Cl2(g) ? 2KCl(aq) + Br2(l) CaBr2(aq) + H2SO4(aq) ? CaSO4(s) + 2HBr(g) SO2(g) + H2O(l) ? H2SO3(g) LiOH(aq) + HNO3(aq) ? LiNO3(aq) + H2O(l) 2Al(s) + 3H2SO4(aq) ? Al2(SO4)3(aq) + 3H2(g)
LiOH(aq) + HNO3(aq) ? LiNO3(aq) + H2O(l)
Evaporation refers to the change of state from a
Liquid to gas
Li2S
Lithium Sulfide
The Stock system name for Mn2O7 is
Manganese (VII) oxide
Which of the following is an extensive property of oxygen? Mass Temperature Density Boiling point Average kinetic energy of molecules
Mass
Any substances that has mass and volume is
Matter
The smallest planet in the solar system is
Mercury
Which planet(s) has (have) no moons?
Mercury and Venus
Which of the following statements about the length of a planet's day is true? The closer the planet is to the sun, the shorter is its day. The more massive the planet, the longer its day. The four gas giants barely rotate at all.
None of these are true.
Carbon, Silicon, Nitrogen, and Oxygen would be classified as
Nonmetals
When uranium emits a beta particle, the result is
Np
What is the nuclear process called where small nuclei are combined into larger ones?
Nuclear fusion
In the equation below, what particle or type of radiation needs to be included to balance the equation? 234Th -->? ? + beta particle
Pa-234
Which is the correct formula for lead(IV) chloride?
PbCl4
What is the formula for lead (II) oxide?
PbO
examples of chemical
Reacts with water, resists corrosion, combustible, does not react with acid, A charging battery, an explosion, digesting food, silver tarnishing, woodburning, milk souring and forming cheese
Who discovered the nucleus in his Gold Foil experiment?
Rutherford
examples of solutions
Salt water, brass (copper and tin alloy) , Soft drink, air, clear aftershave, perfume, 3% hydrogen peroxide
When a piece of paper is burned the amount of matter before is _____the amount after.
Same
Strontium Phosphide
Sr3P2
Water ice and______ are different states of the same hoMogenous substance.
Steam
When we refer to the shape of the orbital, we are really implying
Sublevel
When solid change directly into a gas this is called
Sublimation
Substance A has a pH of 2 and substance B has a pH of 8. This means that
Substance A has more Acidic properties than substance B.
U-238--> alpha particle +
Th
Uranium-235 decays by alpha emission, what is the product of this radioactive decay?
Th-231
Millikan Performed the old drop experiment to measure
The charge on the electron
What do solutions of acids, bases, and salts have in common?
They are electrolytes
What do solutions of acids, bases, and salts have in common?
They are electrolytes.
All of the following are properties of tin. Which one is a chemical property of tin? Tin melts at 231.9ºC. At 40ºC a sheet of tin crumbles to a gray powder. When a bar of tin is bent, it emits an audible "cry". Tin can be hammered into a thin sheet. Tin dissolves slowly in cold, dilute hydrochloric acid, but it dissolves readily in concentrated hydrochloric acid.
Tin dissolves slowly in cold, dilute hydrochloric acid, but it dissolves readily in concentrated hydrochloric acid.
Which one of these represents a physical change? Bleach turns hair yellow Apples, when exposed to air, turn brown Sugar, when heated, becomes brown Milk turns sour Water, when heated, forms steam
Water, when heated, forms steam
The ground-state electron configuration of a calcium atom is ___________.
[Ar]4s2
The ground-state electron configuration for an atom of indium is ___________.
[Kr]5s24d105p1
The solubility of a gas in water decreases
as the water temperature increases.
According to the modern definition, NH3 is
a base because it can accept H+ ions from water.
The ejection of an alpha particle results in
a decrease in the atomic number by two
A hydrogen bond is
a force between a hydrogen atom of one polar molecule and another polar molecule.
An alpha particle is the same as a
a helium-4 nucleus
An example of a hydrogen bond is a weak to moderate bond between
a hydrogen atom on one polar molecule and an oxygen atom on another polar molecule
The presence of solute molecules makes a solution freeze at
a lower temperature than the pure solvent.
Which of the following is a sign of an ion exchange reaction?
a precipitate is formed
In an acid and base reaction, water and a _________.
a salt
When a solution of an acid and a base are mixed together,
a salt and water are formed, they lose their acid and base properties, and they are neutralized
Air is considered to be a homogeneous mixture that is 79 percent nitrogen gas, 20 percent oxygen gas and 1 percent all the other gases. In this mixture, nitrogen can be considered
a solvent
The eventual fate of our sun is to become
a white dwarf
Reactor control rods are made of a substance that
absorbs neutrons
The elements in Group 2A are known by what name?
alkaline earth metals
The correct name for NH4NO3 is
ammonium nitrate.
The smallest unit of a substance that behaves like that substance is
an atom
A substance that cannot be broken down into simpler substances is
an element
When an isotope releases gamma radiation the atomic number
and the mass number remain the same.
Icebergs
are nearly pure water.
The principle components of the earth's atmosphere are nitrogen, oxygen and
argon
All changes of states of matter require
energy
Which of the following is not a solution? a. seawater B. carbonated water c. sand d. Brass, an alloy
c. Sand
Which of the following is not a solution? a. seawater b. carbonated water c. sand d. brass, an alloy
c. Sand
The atmosphere of Venus is predominantly
carbon dioxide
Which of the following solutions is likely to have a pH less than 7? pure water ammonia carbonic acid sodium chloride
carbonic acid
J.J. Thomson discovered that
cathode rays were really a stream of electrons
Digesting food is an example of
chemical change
Rusting of a piece of iron under environmental conditions is a
chemical change.
The ripening of fruit is an example of
chemical property.
The chemical name for ClO3- is "chlorate ion". What is the common name for HClO3?
chloric acid
The stock system name for CrSO3 is:
chromium(II) sulfite
The stock system name for Cr2O3 is:
chromium(III) oxide
The Stock system name for CrO3 is:
chromium(VI) oxide
A chemical reaction is balanced by changing (the)
coefficients
Which would have a pH more than 7? A. carbon acid b. pure water c. sodium chloride solution d. sodium hydroxide solution
d. sodium hydroxide solution
The reaction: potassium chlorate potassium chloride and oxygen gas is an example of
decomposition
The reaction: potassium chlorate---> potassium chloride and oxygen gas is an example of
decomposition
The Stock system name for As2S5 is
diarsenic pentasulfide
Cl2O7
dichlorine heptoxide
According to the plate tectonics theory, sea-floor spreading occurs at a
divergent boundary.
According to plate tectonics, new crustal material is created at
divergent plate boundaries.
In the fission of uranium a chain reaction is caused by
ejected neutrons
Water solutions of ionic substances that conduct electricity are called
electrolytes
A Geiger counter measures radiation indirectly by measuring
electrons released by ionization
A ginger counter measures radiation indirectly by measuring
electrons released by ionization
Aluminum oxygen and carbon are examples of
elements
John Dalton reasoned that atoms exist from the evidence that
elements could not be broken down into simpler substances.
