1. Recycle Ball One team picks a category and a point value. 15 seconds to discuss with team. I will randomly draw a name from the team to answer the question – no more discussions with group! If the team gets the correct answer, they get to shoot for more points.

2. 100 points 200 points

3. formulasmolesheatsolutionsgases 100 200 300 400 500 Jeopardy Trash Ball

4. formulas : 100 In which chemical bond are the electrons shared? Back Answer: Covalent Bond

5. Back When an ionic bond forms, what happens to valence electrons? Answer: They are transferred (from the metal to the non metal) formulas : 200

6. Back ionic bonds typically form between a metal and a ___________. Answer: non-metal formulas : 300

7. Back What is the correct formula when barium and fluorine combine? Answer: BaF 2 formulas : 400

8. Back What is the chemical formula when iron (II) and nitrogen form a bond? Answer: Fe 3 N 2 formulas : 500

9. Back How many atoms are in 1 mole of Na? Moles : 100

10. Back How many molecules are in 1 mole of NaCl ? Moles : 200

11. Back What is the charge of the ion formed by the boron group? Answer: 3+ Moles : 300

12. Back How many moles are in 5 grams of lithium? Answer:.72 moles Moles : 400

13. Back How many grams are in.2 moles of copper? Answer: 12.71g Moles : 500

14. Back In an endothermic reaction are the products higher or lower energy than the reactants? Answer: higher heat : 100

15. Back Which requires more energy to happen: exothermic or endothermic? Answer: endothermic Heat : 200

16. Back How do you determine the ∆E of a reaction? Answer: E products - E reactants heat : 300

17. Back What is the unit for energy used by scientists? Answer: Joules heat : 400

18. Back The specific heat of water is 4.18 J/ g ∙ºC? What does this tell us? Answer: It requires 4.18 Joules of energy to increase the temperature of 1g of water by 1ºC heat : 500

19. Back Which is less concentrated: 1M or 10M? Answer: 1M solutions : 100

20. Back Name one way to increase the rate with which a solution dissolves? Answer: stir, heat, or increase SA solutions : 200

21. Back What equation would you use to solve for moles of solute if you know the molarity and volume? Answer: moles= liters x molarity solutions : 300

22. Back What is a solvent? Answer: The liquid that the solute is Being dissolved in. solutions : 400

23. What is the molarity when 5 moles of NaCl is dissolved in 5 liter of water? Answer: 1M Back solutions : 500

24. Back Is the relationship between temperature and volume direct or inverse? Answer: direct gases : 100

25. Back If I double the temperature of a gas, what happens to the pressure? Answer: it also doubles gases : 200

26. Back In our gas laws lab, we inverted a can in ice water. What happened to the pressure inside the can? Answer: it decreased gases : 300

27. Answer: half “U” Back On a graph, does the relationship between pressure and volume look like a straight line or a half “U”? gases : 400

28. Back Which gas law do we use when number of moles are involved? Answer: ideal gas law: pv=nRT gases : 500