Winter final study guide

Front

What are solids?

Back

Solids are states of matter where molecules are packed closely together and hardly move.

Front

What is sublimation?

Back

Sublimation is the process where a solid changes directly into a gas without becoming a liquid, such as dry ice changing into carbon dioxide.

Front

Do particles in a solid move around each other?

Back

No, in a solid, particles do not move around each other; they vibrate in place.

Front

What state of matter is ice?

Back

Ice is a solid.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a process that releases heat, such as burning wood.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a process that absorbs heat, such as melting ice.

Front

What happens to the molecules in a liquid?

Back

In a liquid, molecules are close together but can move around each other.

Front

What is the difference between a gas and a liquid?

Back

In a gas, molecules are far apart and move freely, while in a liquid, molecules are close together but can slide past one another.

Front

What is the process of melting?

Back

Melting is the process where a solid turns into a liquid when heat is applied.

Front

What is freezing?

Back

Freezing is the process where a liquid turns into a solid when heat is removed.