1. Has a chemical reaction occurred? How do you know?

7. Heterogeneous or Homogenous

14. Writing chemical equations… label products and reactants

15. Sodium hydroxide plus magnesium chloride produces sodium chloride and magnesium hydroxide

16. Water decomposes to form hydrogen gas and oxygen gas

17. Methane (CH4) and oxygen gas produce water and carbon dioxide

18. Chemical v. physical properties

24. States of Matter

25. Definite volume definite shape

26. Indefinite shape definite volume

27. Indefinite shape Indefinite volume

28. Phase changes

29. Solid to liquid

30. Liquid to a gas

31. Gas to liquid

32. Gas to solid

33. Liquid to a solid

34. Solid to a gas

39. Balance the following equations

40. NaH2PO4 -> NaPO3 + H2O

41. SO3 + H2O -> H2SO4

42. BeF2 + Mg -> MgF2 + Be

43. Conjugate Acid and Conjugate Base

44. HClO4(aq) + H2O(l) ⇄ H3O+(aq) + ClO4–(aq)

45. NH3(g) + H2O(l) ⇄ NH4+(aq) + OH–(aq)

46. HNO2(aq) + HS–(aq) ⇄ NO2–(aq) + H2S(aq

47. What affects a reaction rate?