Heterogeneous mixture – mixture that is not uniform throughout Homogeneous mixture – mixture that is uniform throughout

suspension > 1000 nm colloid2 – 1000 nm solution.2 – 2 nm

Types of solutions

Solute – Substance being dissolved or in the least amount Solvent – Substance doing the dissolving or in greatest amount

Polarity is due to the electronegativity of atoms forming a bond

Electronegativity The attraction an atom has form a pair of shared electrons Figure from chemistry for changing times Hill/Kolb 9 th edition page126

More electronegative

Dissolving – Like dissolves like polar / polar nonpolar / nonpolar