Subatomic Particles

Front

What are the three main subatomic particles found in an atom?

Back

Protons, neutrons, and electrons.

Front

Where are protons and neutrons located in an atom?

Back

In the nucleus.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

No charge.

Front

What is the charge of an electron?

Back

Negative.

Front

What does the atomic number of an element represent?

Back

The number of protons in the nucleus.

Front

How do you calculate the number of neutrons in an atom?

Back

Subtract the atomic number from the mass number.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the electron cloud?

Back

The region around the nucleus where electrons are likely to be found.

Front

What is the significance of the nucleus in an atom?

Back

It contains most of the atom's mass and all of its positive charge.