Question 1

Which of the following best describes a chemical property?

Accepted Answer

Hydrogen gas combines explosively with oxygen to form water

Question 2

A student finds a liquid with a density of $$0.87\ \mathrm{g/mL}. If $$the student has $$25\ \mathrm{g} of $$this liquid, what is its volume?

Accepted Answer

$$V = \dfrac{M}{D} = \dfrac{25\ \mathrm{g}}{0.87\ \mathrm{g/mL}} = 28.7\ \mathrm{mL}$$

Question 3

Which of the following is an example of an intensive property?

Accepted Answer

Density

Question 4

Which statement about extensive and intensive properties is correct?

Accepted Answer

Intensive properties are independent of the amount of substance present.

Question 5

Which of the following best describes the difference between a solid, a liquid, and a gas?

Accepted Answer

Solids have definite shapes and volumes; liquids have definite volumes but not definite shapes; gases have neither definite shapes nor definite volumes.

Question 6

Which of the following is a physical property?

Accepted Answer

The hardness of diamond

Question 7

A sample of gold has a mass of $$96.5\ \mathrm{g}$$ and a volume of $$5.00\ \mathrm{cm}^3. $$What is the density of gold?

Accepted Answer

$$D = \dfrac{M}{V} = \dfrac{96.5}{5.00} = 19.3\ \mathrm{g/cm}^3$$

Question 8

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

Accepted Answer

Because it does not change regardless of the amount of substance present

Question 9

Which of the following phase changes is exothermic?

Accepted Answer

Condensation

Question 10

A chemical reaction releases energy in the form of heat and light. Which property does this illustrate?

Accepted Answer

Chemical property

Question 11

Which of the following best describes the process of sublimation?

Accepted Answer

A solid changes directly to a gas without passing through the liquid phase

Question 12

Which of the following is NOT a chemical property?

Accepted Answer

The melting point of ice is $$0^\circ \mathrm{C}$$

Question 13

A block of metal has a mass of $$200\ \mathrm{g}$$ and a density of $$8.0\ \mathrm{g/cm}^3. $$What is its volume?

Accepted Answer

$$V = \dfrac{M}{D} = \dfrac{200}{8.0} = 25\ \mathrm{cm}^3$$

Question 14

Which of the following statements about matter is correct?

Accepted Answer

Matter is anything that has mass and takes up space

Question 15

Which of the following is an example of an extensive property?

Accepted Answer

Mass

Question 16

Which of the following best describes the relationship between mass, volume, and density?

Accepted Answer

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

Question 17

Which of the following is a correct statement about the phase diagram of water?

Accepted Answer

The gas phase is stable at high temperature and low pressure

Question 18

Which of the following is NOT a physical property?

Accepted Answer

Flammability

Question 19

Which of the following best explains why the Hindenburg disaster is an example of a chemical property?

Accepted Answer

It involved hydrogen combining explosively with oxygen to form water

Question 20

Which of the following is true about the energy changes accompanying phase changes?

Accepted Answer

Energy is absorbed during melting

Properties of Matter: Composition, Structure, and Classification

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