Atomic Theory and Periodic Table Vocab

Front

What is the nucleus of an atom?

Back

The central part of an atom containing protons and neutrons.

Front

What does a negative charge indicate?

Back

More electrons than protons.

Front

What is an energy level in an atom?

Back

A specific region where electrons can exist around the nucleus.

Front

What does the Bohr model describe about electrons?

Back

Electrons orbit the nucleus in fixed paths.

Front

What are the smaller particles that make up an atom?

Back

Subatomic particles.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is an atom?

Back

The basic unit of a chemical element, made up of protons, neutrons, and electrons.

Front

What is the atomic number?

Back

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