You need… Pencil ISN ½ sheet of paper. Survey – ½ sheet of paper Answer the following questions on your ½ sheet of paper. You do not need to re-write.

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Presentation transcript:

You need… Pencil ISN ½ sheet of paper

Survey – ½ sheet of paper Answer the following questions on your ½ sheet of paper. You do not need to re-write the question, but write using complete sentences 1.How does it feel to be almost done with middle school? 2.What has been your favorite moment at BTMS so far?

1.Heterogeneous mixtures All components of the mixture are visible because they do not mix together Particles not distributed evenly EX: sand and water vegetable soup oil and water 2 types of mixtures

2.Homogeneous mixtures Components cannot be distinguished from each other, appear as one substance Particles distributed evenly throughout Is also called a solution 2 types of mixtures

SOLUBILITY Every chemical substance which dissolves in water has a fixed solubility. –If it does not dissolve, solubility = zero. Many of these solublities have been measured and special charts are produced displaying solubility of many substances at once.

SOLUBILITY SOLUBILITYBecause different amounts of solute can be dissolved in a solvent, we look at a solution’s SOLUBILITY. Definition: The maximum amount of solute that can be dissolved in a given amount of solvent at a specific temperature. Usually expressed as the number of grams of solute per 100mL of solvent.

Solute: the one that gets dissolved – smaller amount Solvent: the one that dissolves the other substance – greater amount Suspension: solution that includes solid particles that might not dissolve – you can use distillation to separate the solute and solvent Homogeneous Mixtures = Solutions

Solution terminology: o Saturated: Maximum amount of solute dissolved in solvent o Unsaturated: Less than maximum amount of solute dissolved in solvent o Supersaturated: More than maximum amount of solute dissolved in solvent o Dilute: to make less concentrated

temperature increases solubility increases  As temperature increases, solubility increases. more space  This is because there is more space between solvent particles, making more room for solute particles. Solubility Curves