Intro to Chemistry_Lessons 10-15

Front

What needs to be added or lost for a substance to change phases?

Back

Energy

Front

What is the process called when a solid state changes into a liquid?

Back

Melting

Front

How do the molecules move at higher temperatures?

Back

Faster

Front

What is the term for when a solid state turns into a gaseous state?

Back

Sublimation

Front

What happens to the molecules of a gas when it cools and condenses?

Back

The molecules slow down and move closer together.

Front

What is the process called when a liquid turns into a gas?

Back

Vaporization

Front

What is the term for the temperature at which a substance changes from solid to liquid?

Back

Melting point

Front

What is the term for the temperature at which a substance changes from liquid to gas?

Back

Boiling point

Front

What is the process called when a gas turns into a liquid?

Back

Condensation

Front

What happens to the energy of a substance during melting?

Back

Energy is absorbed.