8th Atomic Theory

The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element:

• Molecules
• Protons
• Compounds
• Atoms

A tiny particle that moves around the outside the nucleus of an atom:

• Electron
• Photon
• Neutron
• Proton

The central core of an atom which contains protons and neutrons:

• electron cloud
• nuclear membrane
• atomic shell
• nucleus

A small positively charged particle that is found in the nucleus of an atom:

• photon
• neutron
• proton
• electron

A small particle in the nucleus of an atom with no electrical charge:

• Proton
• Electron
• Photon
• Neutron

The number of protons in the nucleus of an atom:

• Electron number
• Mass number
• Neutron number
• Atomic number

An atom with the same number of protons and a different number of neutrons from other atoms of the same element:

• Elementary
• Isomer
• Nucleus
• Isotope

The sum of protons and neutrons in the nucleus of an atom:

• Isotopic mass
• Atomic mass number
• Nuclear charge
• Electron number

The average mass of all the isotopes of an element:

• Atomic Mass

• Isotope

• Atomic Mass Number

• Chemical Symbol

An arrangement of the elements showing the repeating pattern of their properties:

• Elementary Table
• Sequential Chart
• Cyclical Graph
• Periodic Table