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 protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element.

Front

What is the mass number?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What is a molecule?

Back

A molecule is formed when two or more atoms bond together, which can be of the same or different elements.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements chemically bond together.

Front

What is the nucleus of an atom?

Back

The nucleus is the small, dense, positively charged center of an atom, containing protons and neutrons.

Front

How do you calculate the mass number of an atom?

Back

Mass number = Number of protons + Number of neutrons.