Atoms!!!

Front

Which subatomic particle has a negative charge?

Back

Electron

Front

What is the central region of an atom called?

Back

Nucleus

Front

Where is most of the mass of an atom concentrated?

Back

Nucleus

Front

What does the atomic number of an element represent?

Back

The total number of protons in the nucleus.

Front

What particles are found in the nucleus of an atom?

Back

Protons and neutrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the term for the region around the nucleus where electrons are likely to be found?

Back

Electron cloud.

Front

How do you calculate the mass number of an atom?

Back

By adding the number of protons and neutrons.