1. Welcome to the World of Chemistry Pre-AP and Regular: Ch. 1-2 SAVE PAPER AND INK!!! When you print out the notes on PowerPoint, print "Handouts" instead of "Slides" in the print setup. Also, turn off the backgrounds (Tools>Options>Print>UNcheck "Background Printing")!

2. It’s because he was a teacher!!!

14. Is This Your Version of the Scientific Method??

15. Or Do You Feel Like This When Doing Science?

18. Graphs

24. Line Graph Mass (g) Age (Year of Penny) Mass (g) Age (Year of Penny) Mass (g) Age (Year of Penny) Mass (g) Age (Year of Penny) How does the mass of a penny change with age? A B C D

25. Bar Graph Number of Students Chemistry Grades Descriptive title Legend Axis labeled (with units)

26. Pie Graph

27. Pie Graphs

28. Matter And Energy Chemistry: Chapter 2

31. A Chemist’s View of Water H 2 O (gas, liquid, solid) Macroscopic Symbolic Particulate

32. A Chemist’s View 2 H 2 (g) + O 2 (g) --> 2 H 2 O(g) Macroscopic Symbolic Particulate

44. Matter Flowchart MATTER Can it be physically separated? Homogeneous Mixture (solution) Heterogeneous Mixture Compound yes no Element MIXTURE PURE SUBSTANCE Can it be chemically decomposed? no yes Is the composition uniform? no yes Colloids Suspensions

46. Law of Conservation of Matter There is no observable change in the quantity of matter during a chemical reaction or a physical change. In other words, matter cannot be created nor destroyed. It is just converted from one form to another