Unit 1: Matter and Change

1. Unit 1: Matter and Change Chemistry BHS 2013-2013 Ms. Jensen

2. Matter • Notes Pages 1-2

3. Building Blocks of Matter • Matter – Anything that takes up space and has mass

4. Building Blocks of Matter • Matter – Anything that takes up space and has mass • Mass – Measure of amount of matter • Measured in grams, g

5. Weight v. Mass

6. Building Blocks of Matter • Matter – Anything that takes up space and has mass • Mass – Measure of amount of matter (grams) • Atom – Smallest part of an element that maintains the properties of that element • Comes from Greek “átomos”, which means “uncuttable” or “the smallest indivisible particle of matter” • Was coined in 450 BCE by Democritus

7. Atoms

8. Building Blocks of Matter • Matter – Anything that takes up space and has mass • Mass – Measure of amount of matter (grams) • Atom – Smallest part of an element that maintains the properties of that element • Element – Pure substance with only one type of atom • Cannot be separated into a simpler substance

10. ATOM of Gold (Au)

11. Atoms of Gold (Au)

12. Elemental Gold

13. Bullion: Pure substance (gold) with only one type of atom

14. Building Blocks of Matter • Matter – Anything that takes up space and has mass • Mass – Measure of amount of matter (grams) • Atom – Smallest part of an element that maintains the properties of that element • Element – Pure substance with only one type of atom • Compound – Pure substance, atoms of two or more elements are chemically bonded

15. Compounds • Water, H2O, contains two elements: • Oxygen and Hydrogen • Caffeine, C8H10N4O2, contains four elements: • Carbon, Hydrogen, Oxygen, and Nitrogen

16. Building Blocks of Matter • Matter – Anything that takes up space and has mass • Mass – Measure of amount of matter (grams) • Atom – Smallest part of an element that maintains the properties of that element • Element – Pure substance with only one type of atom • Compound – Pure substance, atoms of two or more elements are chemically bonded • Mixture – A combination of two or more pure substances that are not chemically bonded

18. Mixtures • Heterogeneous Mixture: • Components that make up the mixture are not uniform • Rocks, oil and water, soup, pizza • Homogenous Mixture: • Components that make up the mixture are uniformly distributed throughout • Air, sugar water

19. Can you identify the following? You will be shown a series of photos. Tell if each photo represents an item composed of an element, compound, or mixture. Review: • An element contains just one type of atom. • A compound contains two or more different atoms joined together. • A mixture contains two or more different substances that are only physically joined together, not chemically. • A mixture can contain both elements and compounds.

20. Element, Compound, or Mixture? Rocks

21. Element, Compound, or Mixture? Rocks

22. Element, Compound, or Mixture? Copper

23. Element, Compound, or Mixture? Cu Copper

24. Element, Compound, or Mixture? Jelly Beans

25. Element, Compound, or Mixture? Jelly Beans

26. Element, Compound, or Mixture? Table Sugar

27. Element, Compound, or Mixture? C12H22O11 Table Sugar

28. Element, Compound, or Mixture? Diamond

29. Element, Compound, or Mixture? C Diamond

30. Element, Compound, or Mixture? Tea

31. Element, Compound, or Mixture? Tea

32. Element, Compound, or Mixture? Salt

33. Element, Compound, or Mixture? NaCl Salt

34. Element, Compound, or Mixture? Neon Gas

35. Element, Compound, or Mixture? Ne Neon Gas

36. Element, Compound, or Mixture? Salad

37. Element, Compound, or Mixture? Salad

38. Element, Compound, or Mixture? Pure Water

39. Element, Compound, or Mixture? H2O Pure Water

40. Element, Compound, or Mixture? Aluminum

41. Element, Compound, or Mixture? Al Aluminum

42. Element, Compound, or Mixture? Lemonade

43. Element, Compound, or Mixture? Lemonade

44. Element, Compound, or Mixture? Silver

45. Element, Compound, or Mixture? Ag Silver

46. Element, Compound, or Mixture? Sand

47. Element, Compound, or Mixture? Sand