1. ISAT Preparation Chemistry Mixtures, Physical, and Chemical Changes

2. Vocabulary Pure substanceSolute MixtureSolvent ConcentrationDiluteSaturatedSupersaturated Physical Change Chemical Change

3. Chemistry Pure Substance – matter that consists of only one type of atom or the same molecule Ex. Water, salt, copper, gold, chocolate Mixture – a combination of two or more substances that can be physically separated

4. Chemistry

5. Chemistry Solute – Substance dissolved in a solution Solvent – a solid, liquid, or a gas that dissolves the solute Concentration – measure of how much solute there is in a solution

6. Chemistry

7. Chemistry Dilute – a less concentrated solution -contains less solute Saturated – a solution that has as much solute as it can hold Supersaturated – a solution that has too much solute and a high concentration

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9. Chemistry 1.Do you think steel is a pure substance? 2.What is a key feature that would make salt water a mixture? 3.How can I make a mixture supersaturated? 4.What is a good example of a dilute solution?

10. Chemistry Mixture Madness Materials: Beaker, Salt, Water, Triple Beam Balance, Spoon Measure mass of one spoonful of salt Pour 50 mL of water into beaker. Stir water and slowly put a little of the salt in the water until it can’t hold any more. Measure the remaining salt that is left. Starting mass of salt – remaining salt = amount of salt that the water can hold. Try again with hot water