Atoms

Front

What is an atom?

Back

The smallest particle into which an element can be divided and still be the same element.

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and electrons.

Front

What charge does a proton have?

Back

Positive charge.

Front

What charge does a neutron have?

Back

No charge (neutral).

Front

What charge does an electron have?

Back

Negative charge.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

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

Back

Subtract the number of protons from the mass number.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the role of electrons in an atom?

Back

Electrons are involved in chemical bonding and reactions.

Front

What is an isotope?

Back

Atoms of the same element that have different numbers of neutrons.