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's identity.

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 charge of an electron?

Back

The charge of an electron is negative.

Front

What is the charge of a neutron?

Back

Neutrons have no charge; they are neutral.

Front

What is a chemical element?

Back

A chemical element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number.