The structure of atom

Front

What is the basic unit of matter?

Back

The atom.

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral (no charge).

Front

What is the charge of an electron?

Back

Negative.

Front

Where are protons located in an atom?

Back

In the nucleus.

Front

Where are neutrons located in an atom?

Back

In the nucleus.

Front

Where are electrons located in an atom?

Back

In the electron cloud surrounding the nucleus.

Front

What does the atomic number represent?

Back

The number of protons in an atom.

Front

What does the mass number represent?

Back

The total number of protons and neutrons in an atom.