Atoms Vocabulary

Front

What is an Atom?

Back

Building block of elements.

Tags

NGSS.MS-PS1-1

Front

What is a Proton?

Back

Positive electrical charge, equal and opposite to that of the electron.

Front

What is a Subatomic Particle?

Back

Particle that makes up an atom (protons, electrons, neutrons).

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 an Electron?

Back

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

Tags

NGSS.MS-PS1-1

Front

What is a Neutron?

Back

Neutrally charged particle found in the nucleus of an atom.

Front

What is the Nucleus of an Atom?

Back

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

Tags

NGSS.MS-PS1-1

Front

What is Atomic Number?

Back

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

Front

What is an Isotope?

Back

Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons.

Tags

NGSS.HS-PS1-8

Front

What is the Mass Number?

Back

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