Daily Warm Up: Matter/Atomic Structure

Front

Atom

Back

The basic unit of a chemical element, consisting of a nucleus containing protons and neutrons, with electrons.

Tags

NGSS.MS-PS1-1

Front

Element

Back

A substance composed of atoms that all have the same number of protons in their atomic nuclei.

Tags

NGSS.MS-PS1-1

Front

Nucleus

Back

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

Tags

NGSS.MS-PS1-1

Front

Proton

Back

A positively charged subatomic particle found in the nucleus of an atom.

Tags

NGSS.MS-PS1-1

Front

Neutron

Back

A neutrally charged subatomic particle found in the nucleus of an atom.

Tags

NGSS.MS-PS1-1

Front

Electron

Back

A negatively charged subatomic particle that orbits the nucleus of an atom.

Tags

NGSS.MS-PS1-1

Front

Atomic Number

Back

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

Tags

NGSS.MS-PS1-1

Front

Atomic Mass

Back

The mass of an atom, which is approximately equal to the number of protons and neutrons in the nucleus.

Tags

NGSS.MS-PS1-1

Front

Valence Electron

Back

Electrons in the outermost energy level of an atom that are involved in chemical bonding.

Tags

NGSS.MS-PS1-1

Front

Energy Level (Shell)

Back

A region of an atom where electrons orbit the nucleus at a specific energy level.

Tags

NGSS.MS-PS1-1