Atoms

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

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.

Front

What is the charge of an electron?

Back

Negative.

Front

What determines the atomic number of an element?

Back

The number of protons in the nucleus.

Front

What is the relationship between atomic number and the periodic table?

Back

Elements are arranged in the periodic table by increasing atomic number.

Front

What is atomic mass?

Back

The weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

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

Back

Subtract the atomic number from the atomic mass.

Front

Where are protons and neutrons located in an atom?

Back

In the nucleus.