3. Question 1 What is the Molecular formula for water?

4. Answer 1 H2O

5. Question 2 Water has an uneven distribution of charges, making it what type of molecule?

6. Answer 2 Polar

7. Question 3 Due to this uneven sharing of electrons, the Oxygen atom has a slightly ___________ charge.

8. Answer 3 Negative

9. Question 4 Water’s ability to stick to itself is known as…

10. Answer 4 Cohesion

11. Question 5 What property of water allows this water strider to walk on top of a pond?

12. Answer 5 Surface Tension

13. Question 6 This property of water makes it difficult to remove a wet microscope slide from a table.

14. Answer 6 Adhesion

15. Question 7 The following pictures show a phenomena known as a meniscus. What property/properties of water causes this?

16. Answer 7 The water molecules on the side of the graduated cylinder ADHERE to the glass and COHERE to each other in the middle Capillary attraction is cohesion and adhesion working together

17. Question 8 What property of water allows water to reach the leaves of tall trees?

18. Answer 8 Capillary Action

19. Question 9 Why can capillary action only occur in small tubes?

20. Answer 9 Capillary action in larger tubes can not overcome the force of gravity.

21. Question 10 A substance that dissolves in water is known as a ___________.

22. Answer 10 Solute

23. Question 11 Water’s pH is usually around ______, making it ideal for supporting life

24. Answer 11 7 (Neutral)

25. Question 12 A new substance is found. You decide to see if it dissolves in water. You find that the substance clumps up and does not dissolve. What can you conclude about the polarity of this substance?

26. Answer 12 This substance is non-polar! “Likes dissolve likes”

27. Question 13 Would this new substance dissolve in oil?

28. Answer 13 Yes! Oil is non-polar, and the new substance is as well. “Likes Dissolve Likes”

29. Question 14 Why is water considered an inorganic molecule?

30. Answer 14 It does not contain CARBON!

31. Question 15 You fill a glass bottle with water and put in the freezer overnight. When you wake up the next morning, you find the glass has shattered. What property of water can explain this?

32. Answer 15 Water becomes less dense when it freezes. It is very unique in the fact that it expands when it freezes.

33. Question 16 What would happen to lakes and ponds if water did NOT become less dense as it freezes?

34. Answer 16 They would freeze solid