LAST UNITTT: CHEM

Polar

A molecule with slightly positive and negative ends (like a magnet)

Polar Molecules

Molecules that have uneven sharing of electrons, giving them “charged” ends. They mix well with other polar things (like water)

Nonpolar

Molecules with evenly shared electrons, so no charged ends. They don’t mix with water (like oil)

Universal Solvent

A nickname for water because it can dissolve many substances

Solute

The substance that gets dissolved (like sugar in tea)

Solvent

The substance that does the dissolving (like the water in tea)

Soluble

A substance that can dissolve in a solvent

Insoluble

A substance that cannot dissolve in a solvent

Electrolytes

Substances that dissolve in water and conduct electricity (like salt)

Nonelectrolytes

Substances that dissolve in water but don’t conduct electricity (like sugar)

Concentrated

A solution with a lot of solute in the solvent

Dilute

A solution with a little solute in the solvent