Topic 1: Atoms

Front

What is an atom?

Back

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

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What charge does a proton have?

Back

Positive charge.

Front

What charge does an electron have?

Back

Negative charge.

Front

What charge does a neutron have?

Back

No charge (neutral).

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is nuclear fusion?

Back

The process where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What occurs during a supernova?

Back

Elements heavier than iron are formed.

Front

How do you determine the type of element an atom represents?

Back

By counting the number of protons.