Chemistry Review

Front

What is the chemical formula for water?

Back

H2O

Front

What are the three states of matter?

Back

Solid, Liquid, Gas

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What is a molecule?

Back

Two or more atoms bonded together.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.