Atoms Vocabulary

Front

What is an Atom?

Back

Building block of elements.

Tags

NGSS.MS-PS1-1

Front

What is Atomic Mass?

Back

Mass of an atom = to the number of protons and neutrons.

Front

What is a Nucleus?

Back

Small, dense region consisting of protons and neutrons at the center of an atom.

Front

What is Atomic Number?

Back

The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Front

What is an Electron?

Back

Negatively charged particle that spins around the outside of the nucleus.

Front

What are Protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are Neutrons?

Back

Neutrally charged particles found in the nucleus of an atom.

Front

What is the Electron Cloud?

Back

The area around an atom's nucleus where electrons are most likely to be found.

Front

What is an Isotope?

Back

Atoms of the same element that have different numbers of neutrons.

Front

What is a Chemical Element?

Back

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