Atomic Structure Vocab

the basic unit of a chemical element.

a unit of mass used to express atomic and molecular weights. 1 proton= i amu, i neutron= 1 amu, and 1 electron= 1/2000 amu.

The number of protons in an atom

A 2-D solar system like model created by Bohr, Neils.

The ability of an object to attract or repel other objects.

a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

The electron cloud is a way to describe where electrons are when they go around the nucleus of an atom.

an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

A different version of an element, changed physically but not chemically.( gained or loss of neutrons)

the total number of protons + neutrons in a nucleus.

a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

Inside the nucleus and it has a positive charge. The protons and Electrons are the same in an atom when the atom is neutral.

the central and most important part of an object, movement, or group, forming the basis for its activity and growth