Chemical Reaction Unit Review

Front

What is the phase change going from a solid to a liquid called?

Back

Melting

Front

An element is made up of only one kind of what?

Back

Atom

Front

What involves a change in state, like melting, freezing, or boiling?

Back

Physical change

Front

True or False: A molecule is smaller than an atom.

Back

False

Front

What unit is used to measure mass?

Back

Grams

Front

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

Back

Evaporation

Front

What is the term for a change that produces one or more new substances?

Back

Chemical reaction

Front

What is the term for a substance that cannot be broken down into simpler substances?

Back

Element

Front

What is the process of a gas turning into a liquid called?

Back

Condensation

Front

What is the term for the energy required to break bonds in a chemical reaction?

Back

Activation energy