Practice Test

Question 1

Which statement best describes the process that the diagrams show?

Revolt · Accepted Answer

C: A solid gains kinetic energy to become a liquid and then becomes a gas.

Question 2

Which best describes the process that arrow 1 represents?

Revolt · Accepted Answer

B: Molecules are speeding up during boiling.

Question 3

Why do amorphous solids not have a long-range order in the arrangement of their particles?

Revolt · Accepted Answer

C: Their formation involves very rapid cooling.

Question 4

Which statement describes effusion?

Revolt · Accepted Answer

D: It occurs when a gas passes through a tiny hole.

Question 5

When the process of condensation occurs, the kinetic energy of particles

Revolt · Accepted Answer

C: is insufficient to overcome intermolecular forces.

Question 6

Which statement describes an extensive property of matter?

Revolt · Accepted Answer

C: It changes with the amount of sample that is present.

Question 7

When a strip of magnesium metal is touched to a flame, a bright light and a whitish substance are produced. Why is the burning of magnesium considered a chemical change?

Revolt · Accepted Answer

D: because a new substance is formed

Question 8

Which is a postulate of the kinetic-molecular theory?

Revolt · Accepted Answer

C: Gas particles have a small volume relative to the spaces between them.

Question 9

Which best characterizes a crystal?

Revolt · Accepted Answer

B: a dense substance that is hard and incompressible

Question 10

The gas and liquid are at

Revolt · Accepted Answer

A: equilibrium.

Practice Test Answers

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