Changes in States of Matter

Front

What causes matter to change state?

Back

Matter changes state when enough thermal energy (heat) is added to or removed from the molecules.

Front

What is the boiling point of water?

Back

The boiling point of water is 100°C.

Front

What happens to water vapor in the air when it comes into contact with a cold surface?

Back

Water vapor in the air cools and condenses onto the cold surface.

Front

What are molecules made up of?

Back

Molecules are made up of atoms.

Front

What state of matter is a substance in if its temperature is between its melting point and boiling point?

Back

The substance is in a liquid state.

Front

What is the melting point of ice?

Back

The melting point of ice is 0°C.

Front

What is condensation?

Back

Condensation is the process where water vapor cools and changes into liquid water.

Front

What is evaporation?

Back

Evaporation is the process where liquid water changes into water vapor.

Front

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

Back

The state of matter with a definite shape and volume is a solid.

Front

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

Back

The state of matter that has no definite shape but has a definite volume is a liquid.