Matter & Atoms Review

Front

What is required for all changes in the state of matter of a substance?

Back

Energy

Front

What does the atomic number represent?

Back

The number of protons in an atom.

Front

Which state of matter has molecules that slide past each other but stay close together?

Back

Liquid

Front

What does a compound consist of?

Back

Two or more elements chemically combined.

Front

What is the change of state from a liquid to a solid called?

Back

Freezing.

Front

What is the change of state from a solid to a liquid called?

Back

Melting.

Front

What is the change of state from a liquid to a gas called?

Back

Evaporation.

Front

What is the smallest unit of an element?

Back

Atom.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.