Atoms Vocab/Review KC

The electrons in the outmost shell of the electron cloud

• Valence

• Electron

• Nucleus

Particle smaller than an atom

• Subatomic Particle

• Ion

Tendency to loose or gain electrons

• Atomic Number

• Energy Level

• Reactivity

orbit that contains electrons

• Ion

• Energy Level

• Valence Electrons

• Proton

Atom with positive or negative charge due to loss or gain of electron

• Electron

• Atom

• Ion

• Proton

Subatomic Particle with negative charge and less/no mass

• Proton

• Neutron

• Electron

Number of protons and electrons in nucleus, determines elements position on periodic table

• Atomic #

• Atomic Mass

• Atomic Symbol

• Element Name

Subatomic Particle with no charge, found in nucleus, found by subtracting the atomic number from atomic mass

• Proton

• Neutron

• Electron

Inner part of atom, made of protons and neutrons

• Nucleus

• Neutron

• Proton

• Valence Electron

Average mass of an atom.

• Atomic Mass

• Atomic number

• Atom

• Ion