Structure of an Atom

Front

What number indicates the nucleus?

Back

4

Front

Oxygen’s atomic number is 8. This means that an oxygen atom must have

Back

8 protons

Front

What number indicates an electron?

Back

3

Front

Which statement best describes an electron?

Back

Smaller mass than a proton and a negative charge

Front

What is at the center of every atom?

Back

A nucleus

Front

Which two particles make up the nucleus of an atom?

Back

Protons and Neutrons

Front

In a neutral atom, what is the number of protons equal to?

Back

The number of electrons.

Front

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

Back

neutrons

Front

The positively charged particles of an atom are the ________.

Back

protons

Front

The negatively charged particles of an atom are the ______.

Back

electrons