Atomic Structure - Vocabulary

Front

The building blocks of matter

Back

Atoms

Front

Positively Charged Particle
Mass: 1 amu

Back

Proton

Front

Neutral Charged Particle
Mass: 1 Amu

Back

Neutron

Front

Negatively charged Particle
Mass:  Almost Nothing

Back

Electrons

Front

The total number of Protons and Neutrons.

Back

Mass Number

Front

Number of protons in an atom.

Back

Atomic Number

Front

Electrons in the outermost orbital.

Back

Valence Electrons

Front

Group on the periodic table that is naturally stable and does not react with other elements. Options: Nobel Gases, Alkali Metals, Alkaline Earth Metals, Halogens

Back

Nobel Gases

Front

Anything that has mass and takes up space

Back

matter

Front

Atoms of the same element but with different numbers of neutrons.

Back

Isotope