Semester 1 Test Chemistry
The study of substances that do not contain carbon
Inorganic chemistry
Part of a system having uniform composition and properties
Phase
What is the density of an object having a mass of 8.0g and a volume of 25cm3.
0.23 g/cm3
Which group on the periodic table are the halogens?
17
How many significant figures are there in the measurement 0.00034 kg?
2
Which group on the periodic table are the alkali earth metals?
2
What is the temperature -34 degrees Celcius in Kelvin?
239 K
Convert 58 degrees C to K
331 Ks
How many significant figures are in 811.40 grams?
5
Using the periodic table, determin the number of neutrons in oxygen (16)
8
An element has an atomic number of 80. How many protons and electron are in a neutral atom of an element?
80 Protons 80 Electrons
What do 2 or more elements combine to form?
A compound
A hypothesis is...
A descriptive model for observations
Consider the chemical reaction in which carbon reacts with oxygen to produce carbon dioxide. What mass of carbon dioxide would be purchased if 12 grams of carbon reacted completely with 32 grams of oxygen? A. 44g B. 24g C. 32g D. 64g E. 20g
A. 44g
What is 5928 km expressed in scientific notation? A. 5.928 x 10^3 B. 5.928 x 10^2 C. 5,928 x 10^-3 D. 5.928 x 10^0
A. 5.928 x 10^3
A copper-colored wire changes to a darker color after it is heated and then cooled. What type of change has likely taken place to cause this color change? A. A chemical change B. A physical change C. Neither a physical nor a chemical change
A. A chemical change
One difference between a mixture and a compound is ____. A. A compound can only be separated into its components by chemical means. B. A mixture must be uniform in composition C. A mixture an only be separated into its components by chemical means D A compound is made up of more than one phase.
A. A compound can only be separated into its components by chemical means.
What is the chemical symbol for copper? A. Cu B. Na C. Ag D. Sn E. Hg
A. Cu
Which of the following materials is a pure substance? A. Diamond B. Tea C. Air D. Brass E. Gasoline
A. Diamond
Which of the following is NOT an example of matter? A. Heat B. Smoke C. Water D. Water Vapor E. Air
A. Heat
Which of the following is a chemical property? A. Reactivity with oxygen B. Freezing point C. Color D. Density
A. Reactivity with oxygen
What must occur for a process to be a chemical reaction? A. The process must involve a change in chemical properties B. The process must involve a change in mass C. The process must involve a change in physical properties D. The process must involve a change in volume.
A. The process must involve a change in chemical properties
What is not a physical property of matter?
Ability to react with oxygen
The lowest point of the Kelvin scale
Absolute zero
Closeness to true value
Accuracy
What is the name for (NH2)2(CO3)?
Ammonium Carbonate
The study of the composition of substances
Analytical chemistry
Which of the following is the best example of a quantitative measurement? A. 2.01111 B. 2.01 g C. 2.0111 D. 2.011 E. 2.01
B. 2.01 g
Which of the following is a homogeneous mixture? A. Oil in water B. Alcohol in water C. Soot in water
B. Alcohol in water
Which of the following processes does NOT involve a change in chemical properties? A. Fermenting B. Boiling C. Burning D. Rusting
B. Boiling
The study of the composition and structure of matter is the domain of which field of science? A. Biology B. Chemistry C. Physics D. Geology
B. Chemistry
Separating a solid from a liquid by evaporating the liquid is called ______. A. Emulsification B. Distillation C. Theorizing D. Condensation
B. Distillation
Which state of matter is characterized by low density and high compressibility? A. Solid B.Gas C. Liquid
B. Gas
Which state of matter has a definite volume and takes the shape of its container? A. Solid B. Liquid C. Gas D. Both B and C
B. Liquid
Which state of matter takes both the shape and volume of its container? A. Solid B. Liquid C. Gas D. Both B, and C
B. Liquid
IN the chemical reaction in which carbon, hydrogen, and oxygen absorb heat and combine to form carbon dioxide and water, which of the following is considered to be a reactant? A. Carbon Dioxide B. Oxygen C. Water D. Heat
B. Oxygen
Which of the following household item is NOT a pure compound? A. Distilled water B. Salad dressing C. Sugar D. Salt E. Baking soda
B. Salad dressing
Which state of matter is characterized by having a definite shape and definite volume? A. Plasma B. Solid C. Gas D. Liquid
B. Solid
Which of the following is a true statement about compounds? A. They have properties similar to those of their constituent elements B. They are pure substances C. They have variable compositions D. They can be physically separated into their constituent elements
B. They are pure substances
Which of following is NOT a quantitative measurement? A. 5 L B. Very small C. 200 mL D. 17 mm E. 10 m
B. Very small
The study of the chemistry of living organisms
Biochemistry
Which of the Group 13 is not a metal? Aluminum, Boron, Gallium, or Indium
Boron
The diameter of a carbon atom is 0.000000000154 m. What is this number expressed in scientific notation? A. 1.54 x 10^12m B. 1.54 x 10^10m C. 1.54 x 10^-10m D. 154. x 10^-12m
C. 1.54 v 10^-10m
What is the result of adding (2.5 x 10^3) + (3.5 x 10^-7)? A. 6.0 x 10^3 B. 2.85 x 10^2 C. 2.85 x 10^3 D. 6.0 x 10^5
C. 2.85 x 10^3
How many significant figures are there in the measurement 40,500g? A. 5 B. 2 C. 3 D. 4 E. The cannot be determined
C. 3
What is the result of multiplying (2.5 x 10^10)x(3.5 x 10^-7)? A. 8.75 x 10^-3 B. 8.75 x 10^2 C. 8.75 x 10^3 D. 8.75 x 10^17
C. 8.75 x 10^3
Which of the following CANNOT be considered a single phase? A. A pure solid B. A pure gas C. A heterogeneous mixture D. A pure liquid E. A homogeneous mixture
C. A heterogeneous mixture
What is the chemical symbol for gold? A. Sn B. Na C. Au D. Ag E. Hg
C. Au
A golf ball has more mass than a tennis ball because it _____. A. Has a definite composition B. Contains different kinds of matter C. Contains more matter D. Takes up more space
C. Contains more matter
What is the chemical symbol for sodium? A. Fe B. Sn C. Na D. Hg E. Ag
C. Na
Previous periods in history were known as the stone age, the iron age, and the bronze age. The modern world is primarily the age of ____. A. Recycling B. Solar power C. Plastics D. Aluminum
C. Plastics
How will the mass of a rusted iron nail compare with the mass of the same nail before it rusted? A. The unrusted nail will have the greater mass B. The two masses will be the same C. The rusted nail will have the greater mass
C. The rusted nail will have the greater mass
What is the formula for calcium fluoride?
CaF2
The non-SI scale for temperature
Celsius temperature scale
Process in which substances are changed into different substances
Chemical Reaction
A characteristic of matter that allows it to change to something new is a...
Chemical property
Composed of two or more substances chemically bound together
Compound
What is the formula for Copper (II) acetate?
Cu(Ch3COO)2
Approximately how many elements exist in nature? A. 10,000 B. 30 C 1,000 D. 100 E. 1,000,000
D. 100
A hypothesis is ______. A. A thoroughly tested model B. A concise statement that summarizes the results of a wide variety of experiments C. An observation recorded from an experiment D. A descriptive model for observations
D. A descriptive model for observations
Physical properties of a substance includes ______. A. Color and odor B. Melting and boiling points C. Density and harness D. All of the above
D. All of the abouve
Which of the following is a homogeneous mixture? A. Beef stew B. Raisin bread C. Sand and water D. Brine E. Soil
D. Brine
Which of the following is a significant contributor to the greenhouse effect? A. Pheromones B. Ozone layer depletion C. Decaying radioactive waste D. Carbon dioxide gas
D. Carbon dioxide gas
Chemistry is chiefly concerned with the study of which of the following types of changes in substances? A. Changes in location B. Changes in volume C. Changes in amount D. Changes in composition E. Changes is shape
D. Changes in composition
All of the following are physical properties of a substance is the liquid state EXCEPT _____. A. Definite mass B. Indefinite shape C. Virtual imcompressibility D. Indefinite volume
D. Indefinite volume
What is the first step of the scientific method? A. Stating a theory B. Reaching a conclusion C. Conduction an experiment D. Making an observation E. Formulation a hypothesis
D. Making an observation
All of the following changes to a metal are physical changes EXCEPT _______. A. Bending B. Polishing C. Cutting D. Rusting E. Melting
D. Rusting
What is the name of the element having the chemical symbol Ag? A. Iron B. Antimony C. Copper D. Silver E. Lead
D. Silver
Which of the following is a chemical property of water as it exists at 4 degrees C? A. Its physical state B. Its color C. Its specific gravity D. The fact that it may decompose into hydrogen and oxygen
D. The fact that it my decompose into hydrogen and oxygen
Which of the following is a true statement about homogeneous mixtures? A. They have compositions that never vary B. They consist of two or more phases C. They can consist only of liquids D. They are known as solutions
D. They are known as solutions
A process in which a liquid is boiled to produce a vapor that is condensed again into a liquid
Distillation
Metals can be used as a wire because they are...
Ductile
What is the mane of the element having the chemical symbol Ca? A. Carbon B. Chromium C. Cadmium D. Chlorine E. Calcium
E. Calcium
What is the chemical symbol for lead? A. Sn B. Ag C. Na D. Fe E. Pb
E. Pb
A substance that cannot be changed into a simpler substance under normal laboratory conditions
Element
Matter with no definite volume and no definite shape is a...
Gas
What is each vertical column of elements in the periodic table called?
Group or Family
Not uniform in composition
Heterogeneous mixture
Of completely uniform compostition
Homogeneous mixture
Atoms of the same element with a different number of neutrons are called a ______.
Isotopes
The SI scale for temperature
Kelvin temperature scale
What is the name for LiCl?
Lithium Chloride
Amount of matter in a substance
Mass
The quantity of matter an object contains
Mass
A physical blend of two or more substances
Mixture
Elements that are gases, are brittle, and are poor conductors at room temperature are...
Nonmetals
The study of all substances containing carbon
Organic chemistry
Burning is not a...
Physical change
Concerned with the theories and experiments that describe chemical behavior
Physical chemistry
Narrowness of range of measurements
Precision
A new substance formed in a chemical reaction
Product
Descriptive and nonnumeric
Qualitative
Definite and usually numeric
Quantitative
Starting substance in a chemical reaction
Reactant
Known or estimated in measurement
Significant figure
______ is another name for a homogeneous mixture.
Solution
The measure of the average kinetic energy of the particles of a substance is the...
Temperature
Gas that is normally a liquid or solid at room temperature
Vapor
The force of gravity on an object
Weight
Matter is defined as...
has mass and takes up space