1. PS02A –Teach About Water and Solutions Use with BrishLab PS02A PS02A Done By: Coach

2. 1- How many sides to a container do you need for a liquid and why?

3. 5 out of 6 – no top needed. Gravity holds it in. Page 1 Para 2

4. 1- How many sides to a container do you need for a liquid and why? 5 out of 6 – no top needed. Gravity holds it in. Page 1 Para 2 Image Link Image Link

5. 2- Explain a polar molecule.

6. The different ends of a water molecule have charges – like the poles of a magnet. Page 1 Para 4

7. 2- Explain a polar molecule. The different ends of a water molecule have charges – like the poles of a magnet. Page 1 Para 4 Image Link Image Link

8. 3- Why is water a “special” molecule? Use the word “skin”.

9. A paper clip can “float” on the skin of the water. Page 1 Para 5

10. 3- Why is water a “special” molecule? Use the word “skin”. A paper clip can “float” on the skin of the water. Page 1 Para 5 Image Link Image Link

11. 4- Why does ice float?

12. Ice is less dense than water. Page 1 Para 6

13. 4- Why does ice float? Ice is less dense than water. Page 1 Para 6 Image Link Image Link

14. 5- Why does a water molecule have a slight charge at both poles?

15. Atoms are not the same on each end of a water molecule so there is a slight charge. Page 1 Para 7

16. 5- Why does a water molecule have a slight charge at both poles? Atoms are not the same on each end of a water molecule so there is a slight charge. Page 1 Para 7 Image Link Image Link

17. 6- What two things happen to water at 100º C (212º F)?

18. Water either evaporates or condenses at 100º C Page 2 Para 10

19. 6- What two things happen to water at 100º C (212º F)? Water either evaporates or condenses at 100º C Page 2 Para 10 Image Link Image Link

20. 7- What happens to water to make it solid and then into a liquid?

21. Removing heat turns liquid water into solid water (ice). Adding heat turns solid water (ice) into liquid water. Page 2 Para 11

22. 7- What happens to water to make it solid and then into a liquid? Removing heat turns liquid water into solid water (ice). Adding heat turns solid water (ice) into liquid water. Page 2 Para 11 Image Link Image Link

23. 8- Why do we use salt on an icy street?

24. Salt lowers the freezing point of water so ice does not form. Page 2 Para 12

25. 8- Why do we use salt on an icy street? Salt lowers the freezing point of water so ice does not form. Page 2 Para 12 Image Link Image Link

26. 9- Salt in water is a solution. Salt is the solute and water is the solvent – there is more water than salt. How can you remember this?

27. The ‘u’ in Solute is what ‘u’ put into the larger solvent. Page 2 Para 12

28. 9- Salt in water is a solution. Salt is the solute and water is the solvent – there is more water than salt. How can you remember this? The ‘u’ in Solute is what ‘u’ put into the larger solvent. Page 2 Para 12 Image Link Image Link

29. 10- Why is water known as the “Universal Solvent”?

30. Because so many things can be dissolved into water. Page 2 Para 13

31. 10- Why is water known as the “Universal Solvent”? Because so many things can be dissolved into water. Page 2 Para 13 Image Link Image Link

32. Wrap It Up: - Draw and color a water molecule and the polar charge. Image Link Image Link

33. Wrap It Up: - Draw and color a water molecule and the polar charge. Image Link Image Link