States of matter

Which state of matter has a fixed volume and a definite shape?

• solid

• liquid

• gas

Fluid means something which can flow. Fluid can be ________ and ________.

• solid

• liquid

• gas

The process that turns a solid into a liquid is called?

The process that turns a gas into a liquid is called?

Boiling and evaporation are the changing from a liquid to a gas. It is _______________.

• endothermic

• exothermic

Which of the processes are exothermic?

• melting

• evaporation

• condensation

• freezing

If there are impurities in a substance, what will happen?

• The melting point will decrease.

• The melting point will increase.

• The boiling point will decrease.

• The boiling point will increase.

In which of the following are the particles arranged in a regular pattern?

• a gas

• a liquid

• a solid

• a solution

When steam at 100 ^oC condenses to water at 25 ^oC, what happens to the water molecules?

• They move faster and closer together.

• They move faster and further apart.

• They move slower and closer together.

• They move slower and further apart.

Name the change that occurs in the region D and E.