Atoms Atoms Atoms

Front

All matter is made of _________.

Back

atoms.

Front

What is at the center of every atom?

Back

A nucleus.

Front

The positively charged particles of an atom are the ________.

Back

protons.

Front

The particles with no charge in an atom are the _______.

Back

neutrons.

Front

What is the chemical symbol for Hydrogen?

Back

H.

Front

What are the three main particles in an atom?

Back

Protons, neutrons, and electrons.

Front

What charge do electrons have?

Back

Negative charge.

Front

What charge do protons have?

Back

Positive charge.

Front

What is the mass of a neutron compared to a proton?

Back

Approximately the same.

Front

What is the smallest unit of an element?

Back

An atom.