Atoms and Periodic Table

Front

H is the symbol for ____.

Back

Hydrogen

Front

What is located in the nucleus of an atom?

Back

Protons and neutrons.

Front

How is the Periodic Table arranged?

Back

By atomic number.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is a subscript found in a formula?

Back

A number that tells how many atoms are needed.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What does the atomic mass of an element represent?

Back

The average mass of an atom of an element, measured in atomic mass units (amu).

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.