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 subatomic particles found in the nucleus of an atom.

Front

What are neutrons?

Back

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

Front

What are electrons?

Back

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

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is an electron cloud?

Back

The electron cloud is the region around the nucleus where electrons are likely to be found.

Front

How do protons determine the identity of an element?

Back

The number of protons in an atom's nucleus defines the element and its position on the periodic table.

Front

What is atomic number?

Back

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

Front

What is mass number?

Back

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

Front

What is the charge of a proton?

Back

A proton has a positive charge.