Chemistry Unit 1 Keywords

Solubility

A measure of how much solute can dissolve in a given solvent at a given temperature.

Saturated

being the most concentrated solution possible at a given temperature

Supersaturated

a solution that holds more dissolved solute than is required to reach equilibrium at a given temperature

Unsaturated

A solution that contains less than the maximum amount of dissolved solute in a concentration.

Atomic Number

number of protons

Mass Number

the sum of the number of neutrons and protons in an atomic nucleus

Average Atomic Mass

the weighted average of the masses of all naturally occurring isotopes of an element

Atom

Smallest particle of an element

Isotope

Atoms of the same element that have different numbers of neutrons

Nucleus

Center of an atom

Electron

A subatomic particle that has a negative charge… almost no mass

Proton

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Neutron

A subatomic particle that has no charge and that is found in the nucleus of an atom

Electron Cloud

a region around the nucleus of an atom where electrons are likely to be found

Ion

An atom or group of atoms that has a positive or negative charge.

cation

A positively charged ion

anion

A negatively charged ion