1. Solutions Definition –Parts Factors that affect dissolving— predictions to be made—see next slides

2. Activity 1: rate of dissolving G1: hot, crush, no stir G2: hot, no crush, stir G3: hot, crush, stir G4: tap, crush, no stir G5: tap, no crush, stir G6: tap, crush, stir

3. Predictions Which group(s) will get their sugar cube to dissolve quickly? Which group do you think will be first and WHY?

4. Fair tests What factors need to be the same for the 6 groups so the test is fair and results can be compared?

5. Results of activity 1 What happened? Why?

6. Activity 2: Fizzy sol’ns Pre-questions: –What temperature (hot, room, or cold) will have the most bubbling of the tonic water? –Why did you predict the way you did? Give a real-life reason. –Was your prediction supported by the results?

7. Why of temp vs gases in solution Why did we get the results?

8. Solutes and Temps 1.Measure out 50 mL of tap water. Record its temperature. 2.Add 1 Tbsp of calcium chloride to the 50 mL of water. 3.Stir with a stirring rod and record temp every 30 sec until the calcium chloride is dissolved. 4.What do you notice?

9. Polar—Nonpolar Activity 1 1.Add a styrofoam pellet to water. Record observation. 2.Add the styrofoam pellet to acetone. Record observation. 3.Add equal parts oil and water to test tube. Shake and observe after 4 minutes.

10. Polar—Nonpolar Activity 2 1.Add equal parts oil and water to test tube. Shake and observe after 4 minutes. 2.Add one or two drops of detergent to the test tube with oil and water. 3.Shake the tube a few times to mix. 4.Let the tube rest for 4 min. 5.Record observations.

11. Polar and Nonpolar Polar definition –Use of models Nonpolar definition –Use of models How to predict polarity

12. Polar—Nonpolar Activity 2 1.What is styrofoam made of? Is it polar or nonpolar? 2.Is water polar or nonpolar? 3.What is the formula of acetone? Is it polar or nonpolar? 4.Is oil polar or nonpolar?

13. Polar—Nonpolar Homework 1.Look up the structure of detergent or soap. Is it polar or nonpolar? Why does detergent do this?

14. Polar—Nonpolar Assessment 1.Color completely and darkly on an index card with a pencil. 2.Use a hole punch to cut holes out of the card in the penciled area. 3.Add the circles to the jar that has water and lighter fluid in it. 4.Close the lid, shake gently, and observe the circles. Questions will come in class.