Atoms and Elements Assessment

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is the atomic number of Oxygen?

Back

8.

Front

How many protons are in an atom of Oxygen?

Back

8 protons.

Front

How many protons does a Calcium atom have?

Back

20 protons.

Front

Which element has the atomic number 20?

Back

Calcium.

Front

What is the chemical symbol for Calcium?

Back

Ca.

Front

What are protons?

Back

Subatomic particles with a positive charge found in the nucleus of an atom.

Front

What are neutrons?

Back

Subatomic particles with no charge (neutral) found in the nucleus of an atom.

Front

What is an atom?

Back

The basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What is the nucleus of an atom?

Back

The central part of an atom, containing protons and neutrons.