Qz States of Matter & Phase Changes

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy, usually in the form of heat.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings.

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

What happens to particles in an object at higher temperatures?

Back

Particles in an object move faster at higher temperatures.

Front

What is deposition in terms of phase changes?

Back

Deposition is the process where a gas changes directly into a solid without becoming a liquid first.

Front

What is sublimation?

Back

Sublimation is the process where a solid changes directly into a gas without becoming a liquid.

Front

What is fusion in terms of phase changes?

Back

Fusion is the process of melting, where a solid changes into a liquid.

Front

What is condensation?

Back

Condensation is the process where a gas changes into a liquid.

Front

How does temperature affect the state of matter?

Back

Increasing temperature can change a solid to a liquid (melting) or a liquid to a gas (evaporation).

Front

What is the characteristic of solids?

Back

Solids have a definite shape and volume due to closely packed particles.