Question 1

Which of the following is an example of a chemical property?

Accepted Answer

Reactivity of hydrogen with oxygen

Question 2

A student measures the mass and volume of a liquid and calculates its density using the formula $$D = \frac{M}{V}. If $$the mass is 50 g and the volume is 62.5 mL, what is the density?

Accepted Answer

$$0.80\ \mathrm{g/mL}$$

Question 3

Which of the following is an intensive property?

Accepted Answer

Boiling point

Question 4

The Hindenburg disaster involved the reaction $$2\ \mathrm{H}_2 + \mathrm{O}_2 \rightarrow 2\ \mathrm{H}_2\mathrm{O} + E. $$What type of property does this reaction demonstrate?

Accepted Answer

Chemical property

Question 5

Which of the following best describes the state of matter for a substance that has a definite volume but no definite shape?

Accepted Answer

Liquid

Question 6

A gold cube and an aluminum cube have equal masses but different volumes. Which statement is correct?

Accepted Answer

Aluminum has a smaller density than gold.

Question 7

Which of the following phase changes requires energy to be added to the system?

Accepted Answer

Melting

Question 8

Which of the following is an extensive property?

Accepted Answer

Mass

Question 9

A sample of a liquid has a density of $$0.87\ \mathrm{g/mL}. $$What volume will 25 g of this liquid occupy?

Accepted Answer

$$29\ \mathrm{mL}$$

Question 10

Which of the following best explains why density is considered an intensive property?

Accepted Answer

It is the ratio of two extensive properties that scale in the same way.

Question 11

Which phase change is represented by the direct transition from solid to gas?

Accepted Answer

Sublimation

Question 12

Which of the following statements about gases is correct?

Accepted Answer

Gases have neither a definite shape nor volume.

Question 13

Which of the following is NOT a physical property?

Accepted Answer

Reactivity with oxygen

Question 14

Which of the following best describes the arrangement of particles in a solid?

Accepted Answer

Particles are closely packed in a fixed, orderly arrangement.

Question 15

Which of the following changes is accompanied by a release of energy?

Accepted Answer

Condensation

Question 16

Which property would NOT change if you cut a block of copper in half?

Accepted Answer

Density

Question 17

Which of the following best describes the triple point on a phase diagram?

Accepted Answer

The temperature and pressure where solid, liquid, and gas phases coexist.

Question 18

Which of the following is a real-world example of a chemical change?

Accepted Answer

Iron rusting when exposed to air

Question 19

If you increase the pressure on a gas at constant temperature, what happens to its volume?

Accepted Answer

It decreases.

Question 20

Which of the following is the correct formula for calculating volume if density and mass are known?

Accepted Answer

$$V = \frac{M}{D}$$

Properties and States of Matter: Foundations of General Chemistry

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