MCCC_Chapt. 1-8
Which of the following is an example of potential energy? -chewing food -water stored in a reservoir -a fan blade turning -riding an exercise bike -burning wood
water stored in a reservoir
Which of the following does NOT involve a change of state? -pouring water into a vacuum-insulated bottle -vaporization of alcohol -melting ice -sublimation of dry ice -freezing water
pouring water into a vacuum-insulated bottle
is found in the nucleus: -proton -neutron -electron -electron and neutron -proton and neutron
proton and neutron
The atomic number of an atom is equal to the number of: -neutrons plus protons -nuclei -protons -electrons plus protons -neutrons
protons
A value of 25 °C is a measurement of -volume. -distance. -mass. -density. -temperature.
temperature
Ionization energy is: -highest for metals in Group 1A(1). -the energy an ion acquires from an electron. -the energy needed to remove the least tightly bound electron. -higher for potassium than for lithium. -None of the above.
the energy needed to remove the least tightly bound electron.
65.8 ∘F = ___ ∘C
18.8
A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is -53 mg. -0.59 mg. -1.6 mg. -19 mg. -5.0 mg.
19mg
Which of the following examples illustrates a number that is correctly rounded to three significant figures? -20.0332 grams to 20.0 grams -4.05438 grams to 4.054 grams -0.03954 grams to 0.040 grams -103.692 grams to 103.7 grams -109,526 grams to 109 500 grams
20.0332 grams to 20.0 grams
-31.0 ∘C = ___K
242
A potato contains 20 g of carbohydrate. If carbohydrate has a caloric value of 4 kcal/g, how many kcal are obtained from the carbohydrate in the potato? 40 kcal 60 kcal 80 kcal 20 kcal 5 kcal
80 kcal
Which of the following measurements are NOT equivalent? -24 dL = 2.4 L -150 msec = 0.150 sec -25 mg = 0.025 g -183 L = 0.183 kL -84 cm = 8.4 mm
84 cm = 8.4mm
9.31 g is the same mass as -931 μg. -93.1 cg. -9310 mg. -931 kg. -0.0931 dg.
9310mg
37.0 ∘C = ____ ∘F
98.6
The number 680 000 000 expressed correctly using scientific notation is -6.8 x 10^8. -0.68 x 10^6 . -68 x 10^7. -680 x 10^6. -6.8.
6.8 x 10^8
What is the volume of a cube that measures 4.00 cm on each side? -0.640 L -16.0 mL -64.0 L -64.00 mL -64.0 mL
64.0mL
Select the element in each pair with the higher ionization energy. -Si -P
P
In an atom, the nucleus contains: -all the protons and electrons -an equal number of protons and electrons -all the protons and neutrons -only neutrons -only protons
all the protons and neutrons
In which of the following is the metric unit paired with its correct abbreviation? -milliliter / mL -centimeter / km -kilogram / cg -gram / gm -microgram / mg
milliliter /mL
The Group 8A elements: -are unreactive and are rarely found in combination with other elements. -melt at high temperatures. -are liquids at room temperature. -react vigorously with water. -are good conductors of electricity.
are unreactive and are rarely found in combination with other elements
Which of the following elements is a noble gas? -argon -bromine -nitrogen -oxygen -chlorine
argon
The smallest particle of an element that retains the characteristics of the element is a(n): -atom. -proton. -neutron. -electron. -nucleus.
atom
Which of the following is a chemical change? -melting gold -cutting a rope -burning sugar -making a snowman -bending a steel rod
burning sugar
A heating curve illustrates: -what happens to the heat applied as the temperature is increased. -changes in the temperature and physical state of a substance as it is heated. -chemical changes that occur as the substance is heated. -what a substance looks like as it is heated. -what happens to the particles of a substance as it is heated.
changes in the temperature and physical state of a substance as it is heated
The energy associated with the motion of particles in a substance is called -work. -chemical energy. -electrical energy. -heat. -potential energy.
heat
Identify the noble gas in the following list. -gold -helium -oxygen -chlorine -nitrogen
helium
Air is a(n): heterogeneous mixture compound homogeneous mixture element None of the above
homogeneous mixture
Which of the following is a measurement of mass in the metric system? -Celsius -meter -milliliter -centimeter -kilogram
kilogram
Which of the following is a measurement of mass in the metric system? -Celsius -oz -meter -lb -kilogram
kilogram
Identify the changes of state for the following example: The solid structure of a substance breaks down as liquid forms. -melting -freezing -sublimation -deposition
melting
Write the numerical value for pico
0.000000000001
Write the numerical value for milli
0.001
Write the numerical value for centi
0.01
Write the numerical value for deci
0.1
Which of the following measurements has three significant figures? -0.051 m -0.005 m -510 m -5100 m -0.510 m
0.510m
A physician has ordered 315 mg of atropine, intramuscularly. If atropine were available as 0.500 g/mL of solution, how many milliliters would you need to give?
0.630 mL
Identify the changes of state for the following example:Crystals of ice form on a package of frozen corn. -melting -freezing -sublimation -deposition
deposition
What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL? -0.023 kg -0.015 kg -1.15 kg -2.30 kg -0.58 kg
2.30kg
A conversion factor set up correctly to convert 15 inches to centimeters is -1 cm/10 mm. -100 cm/1 m. -2.54 cm/1 inch. -1 inch/2.54 cm. -10 cm/1 inch.
2.54 cm/1inch.
A doctor's order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/5.0 mL. How many milliliters of the suspension are required? -0.0063 mL -0.0025 mL -3.0 mL -6.3 mL -2.5 mL
2.5mL
What is the mass number of an atom of potassium that has 20 neutrons? -35 -39 -15 -59 -19
39
A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported? -423 -423.6 -423.7 -424 -420
424
What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL? -67.1g -53g -42g -67g -41.9g
42g
A cooler has a volume of 5700 mL . What is the capacity of the cooler in liters?
5.70 L
What is the symbol of the element in Group 4A(14) and Period 2? -Ca -Si -Be -C -Mg
C
Isotopes are atoms of the same element that have: -same atomic numbers but different numbers of protons. -different atomic numbers. -same atomic mass but different numbers of protons. -same atomic numbers but different numbers of electrons. -same atomic number but different numbers of neutrons.
same atomic number but different numbers of neutrons
The physical state(s) present when a substance is melting is (are): liquid gas liquid + gas solid + liquid solid
solid + liquid
What is the metric relationship between grams and micrograms? -1 g = 0.000 001 μg -1 g = 100 μg -1 g = 1 000 000 μg -1 g = 0.001 μg -1 g = 1000 μg
1 g = 1 000 000 μg
In which of the following would the particles move most rapidly? -water at 20 °C -steam at 110 °C -boiling water -ice at -20 °C -ice at 0 °C
steam at 110 °C
Which of the following elements is a metal? -strontium -phosphorus -nitrogen -fluorine -argon
strontium
Identify the changes of state for the following example:Coffee is freeze-dried. -melting -freezing -sublimation -deposition
sublimation
When a solid is converted directly to a gas, the change of state is called: -freezing -boiling -condensation -melting -sublimation
sublimation
What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL? -0.59 g/mL -0.587 g/mL -45.0 g/mL -1.7 g/mL -1.70 g/mL
1.70 g/mL
The height of a student is 175 centimeters. How tall is the student in meters?
1.75m
Helium is a(n): -heterogeneous mixture -electron -homogeneous mixture -element -compound
element
The primary substances of which all other things are composed are: -electrons -protons -elements -compounds -molecules
elements
The primary substances of which all other things are composed are: -protons -compounds -molecules -elements -electrons
elements
The number of significant figures in the measurement of 45.030 mm is -none. -three. -four. -five. -six.
five
The number of dots in the electron dot structure of carbon is: -two -one -five -three -four
four
Identify the changes of state for the following example:Water on the street turns to ice during a cold wintry night. -melting -freezing -sublimation -deposition
freezing
Which of the following is an example of a physical change? -converting water to hydrogen and oxygen -baking a cake -digesting a cheeseburger -burning coal -grinding coffee beans
grinding coffee beans
Which of the following is a physical property of both liquids and gases? -has a definite volume -has randomly arranged particles -has strong interactions between its particles -has its own shape -has large spaces between molecules
has randomly arranged particles
What is the conversion factor for the relationship between millimeters and centimeters? -1 mm/1 cm -10 cm/1 mm -10 mm/1 cm -1 cm/1 mm -100 mm/1 cm
10 mm/1cm
Write the numerical value for kilo
1000
A patient has a temperature of 38.5 °C. What is the temperature in degrees Fahrenheit? 70.5 °F 11.7 °F 101.3 °F 126.9 °F 311 °F
101.3 °F
An intramuscular medication is given at 5.80 mg/kg of body weight. If you give 410 mg of medication to a patient, what is the patient's weight in pounds?
156 lb
How many centimeters are there in 57.0 in.? -22 cm -0.0445 cm -145 cm -22.4 cm -140 cm
145 cm
The physician has ordered 1.90 g of tetracycline to be given every 6.00 hours to a patient. If your stock on hand is 500 mg tablets, how many will you need for 1 day's treatment?
15.2 tablets
Which of the following numbers is the smallest? -4.0 x 10^-12 -4.0 x 10^15 -4.0 x 10^-6 -4.0 x 10^-8 -4.0 x 10^-2
4.0 x 10^-12
Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 15.1 g? -0.233 cm^3 -4.3 cm^3 -53.2 cm^3 -4.29 cm^3 -53 cm^3
4.29 cm^3
The measurement 0.000 0043 m, expressed correctly using scientific notation, is -4.3 x 106 m. -0.43 x 10-5 m. -4.3 x 10-7 m. -4.3 m. -4.3 x 10-6 m.
4.3 x 10-6 m.
A temperature of 41 °F is the same as: -9 °C. 310 °C. 42 °C. 16 °C. 5 °C.
5 °C
A hummingbird has a mass of 5.50×10−3 kg . What is the mass of the hummingbird in grams?
5.50g
Select the element in each pair with the higher ionization energy. -Br -I
Br
Of the elements: B, C, F, Li, and Na. The element with the smallest atomic radius is: -Na -F -Li -B -C
F
Select the larger atom in each pair: -S -Cl
S
Which of the following is a property of a solid? -It fills the volume of the container. -The particles have fixed positions and are very close together. -It takes the shape of the container. -The particles move at a rapid rate. -The interactions between its particles are very weak.
The particles have fixed positions and are very close together
carries a negative charge: -proton -neutron -electron -electron and neutron -electron and proton
electron
is found in the larger part of the atom: -proton -neutron -electron -electron and neutron -proton and neutron
electron
has a mass about the same as a proton's: -neutron -electron -electron and neutron
neutron
Significant figures are important because they indicate -the number of digits on a calculator. -the number of measurements. -the precision of a measurement. -the accuracy of a measurement. -the accuracy of the conversion factor.
the precision of a measurement. .
How many significant figures are in the number 0.00208? -two -four -five -six -three
three
In an electron-dot structure of an element, the dots are used to represent: -electrons that the element will gain when it forms a compound. -valence electrons. -all of the electrons in the atom. -only the electrons that will participate in bond formation. -electron arrangement.
valence electrons
A value of 36 mL is a measure of -mass -volume -density -temperature -distance
volume
The amount of space occupied by a substance is its -mass. -density. -weight. -volume. -length.
volume
