Atomic Theory

chemical reaction

In a(n) ________, atoms are separated, rearranged, and joined.

Isotope

________- determined by neutrons.

electrons

Ion- determined by ________.

tiny invisible particles

All matter is composed of ________.

ratio

There is always a(n) ________ by mass if one has a particular compound.

Electron

________ cloud- spaces around the nucleus where electrons are found.

Isotope

________- atoms of some elements with different numbers of neutrons.

electrons (

charge), discovered by Thompson, 0 amu

isotope

atoms of some elements with different numbers of neutrons

ion

charged particle

gain electron

negative charge

lose electron

positive charge

cation

positive ion

anion

negative ion

electron cloud

spaces around the nucleus where electrons are found

nucleus

protons and neutrons; positive

mass number

protons and neutrons

atomic number

number of protons

element

determined by protons

isotope

determined by neutrons

ion

determined by electrons