Topic 2 - Solids, Liquids and Gases

Front

What happens to the pressure of a gas when it is exposed to cold air?

Back

The pressure of a gas decreases when it is exposed to cold air.

Front

What is the inward force or pull among the molecules in a liquid that brings the molecules on the surface close together?

Back

Surface tension acts as a sort of skin on the surface of liquids.

Front

What is it called when a gas forms directly from a solid, skipping the liquid phase?

Back

This process is called sublimation.

Front

True or False: Gases can be compressed.

Back

True.

Front

Is sublimation (changing from a solid directly to a gas) a chemical change? True or False?

Back

False.

Front

What is the state of matter that has a definite shape and volume?

Back

Solid.

Front

What is the state of matter that has a definite volume but takes the shape of its container?

Back

Liquid.

Front

What is the state of matter that has no definite shape or volume?

Back

Gas.

Front

What is viscosity?

Back

Viscosity is a measure of a liquid's resistance to flow.

Front

What happens to the molecules of a gas when it is heated?

Back

The molecules move faster and spread apart.