1. Q: Electronegativity only affects molecules with what type of bond? A: Nonpolar

2. Q: What is the word for “equally shared electrons”? A: Oxygen

3. Q: One of the strongest elements (based on electronegativity) is…. A: delta symbol δ

4. Q: How is electronegativity represented in a molecule? A: Stronger element

5. Q: Who becomes negative, the stronger or the weaker element? A: CH 4 (methane), H 2 (Hydrogen gas)

6. Q: Give two examples of nonpolar molecules. A: H 2 0 (water), CO 2 (carbon dioxide)

7. Q: Give two examples of polar molecules. A: solution the same throughout

8. Q: Define homogenous. A: Aqueous because water is the solvent

9. Q: NaCl + H 2 O – What type of solution is this? Why? A: Ionic and polar covalent

10. Q: What two specific bond types are hydrophilic? A: nonpolar bond

11. Q: What specific bond type is hydrophobic? A: Hydrophilic because of the charges that make it want to split up

12. Q: Which, hydrophilic or hydrophobic, mixes with water? Why? A: Hydrogen bond

13. Q: The bond between the oxygen of one water molecule and the hydrogen of another is what type of bond? A: 4 total, 2 hydrogen and 2 covalent

14. Q: How many bonds can a single oxygen of water have? What types of bonds are these? A: One is between like substances and the other is between two different substances

15. Q: What is the difference between cohesion and adhesion? A: Cohesion

16. Q: Which, cohesion or adhesion, applies to surface tension? A: Amount of heat absorbed/lost for 1g to change 1⁰C

17. Q: Define and explain specific heat. A: High because it can store and hold on to the heat

18. Q: Does water have a high or a low specific heat? Explain. A: Short time because it easily gives off the heat, it cannot store it

19. Q: Does it take a long time or a short time for something with a low specific heat to change in temperature? Why? A: Solid

20. Q: In what state is water less dense, a solid or a liquid? A: Expands

21. Q: At temperatures above 4 degrees Celsius, water _______ (expands or contracts) as it warms. A: 0⁰C

22. Q: At what temperature does water become locked into a crystalline lattice? A: 4 hydrogen bonds

23. Q: In crystalline lattice, how many bonds does each water molecule have? A: Contracts

24. Q: From 0 degrees to 4 degrees, water ______ (expands/contracts). A: Hydrogen is very weak and oxygen is very strong. It wants to bond with anything.

25. Q: Why is water the solvent of life? A: Covalent bond