1. 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 P & C Properties P & C Changes Reactions Heat Transfer Ionic or Covalent?

2. Change of state melting, freezing etc… Chemical or Physical

3. Physical

4. flammability Chemical or Physical

5. Chemical

6. density Chemical or Physical

7. Physical

8. reactivity Chemical or Physical

9. Chemical

10. solubililty Chemical or Physical

11. Physical

12. Sugar dissolves in water. Chemical or physical change?

13. Physical

14. In baking biscuits and other quick breads, the baking powder reacts to release carbon dioxide bubbles. The carbon dioxide bubbles cause the dough to rise. Chemical or physical change?

15. Chemical

16. Chemical or physical change? A tree rots.

17. Chemical

18. Iron rusting or silver tarnishing. Chemical or physical change?

19. Chemical

20. Food is chewed and then digested. Chemical or physical change?

21. Trick question Food chewed = physical change Food digested = chemical change

22. In the following reaction, what are the reactants? MgCl 2 + Li 2 CO 3  MgCO 3 + 2 LiCl

23. MgCl 2 + Li 2 CO 3

24. What does the arrow (→) stand for?

25. Yields

26. What is the product in the following reaction? 2 C 5 H 5 + Fe  Fe(C 5 H 5 ) 2

27. Fe(C 5 H 5 ) 2

28. 2 NO 2  2 O 2 + N 2 What type of reaction is the following?

29. decomposition

30. True or False In a chemical reaction, the amount of products must equal the amount of reactants.

31. True Law of conservation of mass.

32. When an instant ice pack is activated, cold temperatures are produced. Exothermic or Endothermic?

33. Endothermic

34. Exothermic or Endothermic? Burning paper.

35. Exothermic

36. Exothermic or Endothermic? Sublimation.

37. Endothermic

38. In which state of matter do molecules have the most potential energy?

39. solid

40. Endothermic or Exothermic? A glow stick is activated.

41. Exothermic—energy (in the form of light) is released.

42. In this type of compound, electron are shared by atoms of non-metal elements.

43. Covalent

44. In this type of compound, electrons are transferred between atoms of a non-metal and a metal.

45. Ionic.

46. Ionic or Covalent? A compound has the following properties: Strong bonds. High melting and boiling points. Brittle. Conducts heat and electricity. Example: NaCl (sodium chloride)

47. Ionic

48. Does not conduct electricity. Low melting and boiling points. Tend to be soft and flexible. Example: CO 2 (carbon dioxide) Ionic or Covalent? A compound has the following properties:

49. Covalent

50. In a mixture, do the properties of the elements change or stay the same?

51. Stay the same.