1. Chem II

2. Poly Policy Dress code violations, which cannot be rectified, are to be sent directly to the GLA

3. Poly Policy Electronic devices, other than calculators, are to be confiscated & sent directly to the GLA

4. Poly Policy Electronic devices that have been confiscated will only be returned to a guardian.

5. Chemistry II information will be presented by Power Point Presentation.

6. All of the Power Point Presentation for this course are attached to the HW section of Poly’s website under the name Chemistry II Power Points.

7. To be successful in chemistry, you must be competent in algebra.

8. Solve for Y AB XY = CDE

9. Scientific Method

10. A systematic method for performing research

11. Scientific Method Observing Hypothesizing Experimenting Analyzing

12. Hypothesis

13. An educated guess

14. Variables

15. Anything that changes or can be changed in an experiment

16. Independent Variable

17. The variable that is changed by the person doing the experiment

18. Dependent Variable

19. A variable that changes due the effects of the independent variable being changed

20. Scientific Law

21. Any fact that has been proven beyond any doubt

22. Scientific Theory

23. An idea that is supported by much scientific data and is accepted by the scientific community as correct, but cannot be proven

24. Problem Solving

25. What do you have? Identify what’s given List the variables

26. What do you want? Identify what’s being asked for Identify the problem

27. How do you get it? Identify a formula or an algorithm that can be used to solve the problem

28. Chemistry The study of matter

29. Matter Anything that: takes up space has mass has inertia

30. Mass The measure of the amount of matter

31. Types of Matter Pure: one kind of substance Mixture: 2 or more substances

32. Substance A specific type of matter

33. Pure Substances Elements Compounds

34. Element Any pure substance that contains only one kind of atom

35. Compound A pure substance made up of 2 or more elements chemically combined

36. Mixture A Physical blend of substances

37. Mixture Each part retains its properties

38. Mixture Mixtures can be separated by physical means

39. Mixtures Heterogeneous Homogenous

40. Heterogeneous Mixture Made up of multiple phases Non-uniform

41. Phase Any physically separate part of a substance

42. Interface Where two phases come together

43. Homogeneous Mixture Made up of only one phase Uniform throughout

44. Solution Homogeneous mixture

45. Solute Any of the lesser portions of a solution What has been dissolved

46. Solvent The larger portion of a solution What is doing the dissolving

47. Separating Mixtures Filtration Distillation Precipitation Chromatography

48. Filtration Separation by size Passing through pores

49. Distillation Separation by differences in B.P. Boil & collect

50. Precipitation Separation by differences in solubility Allow solutions to ppt

51. Chromatography Separation through charge or polarity differences Separating ink on paper

52. Classify each of the following as: Pure: element or compound Mixture: hetero. or homo

53. Air, water, mud, the sea, aluminum, orange juice, brass, gold

54. List and describe all types of pure substances

55. List and describe all types of mixtures