What is the density of a sample of liquid that has a volume of 125 mL and a mass

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What is the density of a sample of liquid that has a volume of 125 mL and a mass of 200 g?

Select one:

a. 1.6 g/mL

b. 0.625 g/mL

c. 75 g/mL

d. 16 g/mL

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The different substances in a mixture

Select one:

a. keep their properties.

b. combine chemically.

c. cannot be separated.

d. form new molecules.

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Ice floats in water because it is

Select one:

a. colder than water.

b. more dense than water.

c. less dense than water.

d. warmer than water.

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The change of a substance from a solid directly to a gas is called

Select one:

a. melting.

b. condensation.

c. evaporation.

d. sublimation.

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Unlike a gas, a plasma

Select one:

a. conducts electric current.

b. has no definite shape.

c. has no mass.

d. has no definite volume.

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Which of the following is an example of a gas-liquid mixture?

Select one:

a. the air we breathe

b. a helium balloon

c. a carbonated drink

d. ice cubes

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Processes such as dissolving, melting, freezing, and evaporating can affect the appearance of a substance, but the identity of the substance remains the same. These processes are called .

Select one:

a. physical properties

b. chemical changes

c. chemical properties

d. physical changes

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The illustrations show sealed containers, each of which contains a different substance. Which illustration represents gas molecules?

Select one:

a. c.

b. d.

c. b.

d. a.

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Which state of matter has a definite volume, but not a definite shape?

Select one:

a. gas

b. solid

c. plasma

d. liquid

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The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid?

Select one:

a. 3

b. 6

c. 7

d. 5

Explanation / Answer

1) (a) 1.6 g/ml

2) (a) they keep their properties

3) (c) less dense than water

4) (d) sublimation

5) (a) conducts electric current

6) (c) a carbonated drink

7) (d) physical changes

8) (d) a

9) (d) liquid

10) (c) 7 atoms

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