Atomic Theory and Periodic Table Vocab

Front

What are the smaller particles that make up the atom?

Back

Subatomic particles

Front

What is a positive charge?

Back

More protons than electrons

Front

What is an atomic model?

Back

A representation of the structure of an atom

Front

What are metalloids?

Back

Elements with properties of both metals and non-metals on the stairstep line

Front

What is an energy level in an atom?

Back

A specific region where electrons can exist around the nucleus

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What is a molecule?

Back

A group of atoms bonded together.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number?

Back

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

Front

What are electrons?

Back

Negatively charged subatomic particles that orbit the nucleus.