Atoms

Front

What is the basic unit of matter?

Back

Atoms are the basic unit of matter.

Front

What does the atomic mass of an element represent?

Back

The atomic mass represents the average mass of an atom of an element, measured in atomic mass units (amu).

Front

How many protons are in a neutral atom of an element?

Back

In a neutral atom, the number of protons is equal to the number of electrons.

Front

What are the three main subatomic particles?

Back

The three main subatomic particles are protons, neutrons, and electrons.

Front

What charge do protons carry?

Back

Protons carry a positive charge.

Front

What charge do electrons carry?

Back

Electrons carry a negative charge.

Front

What is the charge of neutrons?

Back

Neutrons have no charge; they are neutral.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

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

Back

To find the number of neutrons, subtract the atomic number from the atomic mass.

Front

What is the atomic mass of Fluorine (F)?

Back

The atomic mass of Fluorine (F) is approximately 19.