Question 1

What is diffusion?

Accepted Answer

The movement of particles from an area of high concentration to an area of low concentration

Answer

The movement of particles between different states of matter

Answer

The movement of particles within a solid

Answer

The movement of particles from an area of low concentration to an area of high concentration

Question 2

What effect does increasing the pressure have on the particles in a gas?

Accepted Answer

They get closer together

Answer

They expand

Answer

They change state

Answer

They become solid

Question 3

According to the particle theory, what happens to particles when a solid is heated?

Accepted Answer

They vibrate more

Answer

They move closer together

Answer

They expand

Answer

They turn into liquid

Question 4

What is the process of evaporation?

Accepted Answer

The changing of a liquid into a gas at the surface

Answer

The changing of a gas into a solid

Answer

The changing of a gas into a liquid

Answer

The changing of a solid into a liquid

Question 5

What happens to the pressure of a gas when its volume is decreased?

Accepted Answer

It increases

Answer

It becomes solid

Answer

It decreases

Answer

It stays the same

Question 6

What is the primary factor that affects the rate of diffusion?

Accepted Answer

Temperature

Answer

Pressure

Answer

Size

Answer

Color

Question 7

What happens to the particles of a gas when it is cooled?

Accepted Answer

They move slower

Answer

They move faster

Answer

They change state

Answer

They disappear

Question 8

What is the definition of pressure?

Accepted Answer

The force exerted on a given area

Answer

The temperature of a substance

Answer

The amount of matter in a substance

Answer

The rate at which a substance diffuses

Question 9

What is the main difference between a solid, a liquid, and a gas?

Accepted Answer

The arrangement and movement of particles

Answer

The weight and density

Answer

The temperature and pressure

Answer

The color and appearance

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