Mixtures

• A mixture is a substance made up of 2 or more elements or compounds that aren't chemically bonded together.
• A pure substance is a substance made up of only 1 element or compound.
• Pure substances have a fixed melting and boiling point whereas mixtures (impure substances) melt and boil over a range of temperatures.
• A compound is a substance that is made up of atoms from at least 2 different elements chemically bonded together.
• Solute + Solvent = Solution
• Solute - the substance that dissolves in the solvent.
• Solvent - a liquid that dissolves the solute.
• Solution - a mixture made up of a substance (solute) being dissolved in another (solvent).