Atoms and Elements Vocabulary

Smallest particle of an element that maintains the properties of that element.

• Atom

• Proton

• Neutron

• Electron

Average mass of one atom of an element (from particles in the nucleus).

• Electrical Charge

• Atomic Number

• Atomic Mass

• Electron Cloud

The number of protons in the nucleus of an atom; used to determine an element's position in the periodic table.

• Atom

• Atomic Number

• Atomic Mass

• Proton

A property of a subatomic particle; positive (protons), negative (electrons), or neutral (neutrons).

• Subatomic Particle

• Atomic mass

• Electron Cloud

• Electrical Charge

Tags

NGSS.MS-PS2-3

A negatively charged particle in the electron cloud surrounding the atomic nucleus

• Proton

• Neutron

• Electron

• Subatomic Particle

The negatively charged space containing electrons that surrounds the atomic nucleus.

• Electric Charge

• Valence Electrons

• Electron Cloud

• Atomic Mass

A neutral particle with no electrical charge within the atomic nucleus.

• Proton

• Neutron

• Electron

• Subatomic Particle

The positively charged center of an atom containing the protons and neutrons.

• Atom

• Electron Cloud

• Neutron

• Nucleus

A conceptual model in which the elements are organized according to their properties; often displayed as a chart.

• Periodic Table

• Location

• Element

• Electron Cloud

A positively charged particle within the atomic nucleus; used to identify an element.

• Proton

• Neutron

• Electron

• Subatomic Particle