1. Unit One and Two Describing Matter

2. What is chemistry?  The study of matter and the changes it undergoes.

3. What is matter?  Anything that has mass and takes up space.

4. What are examples of matter?  Almost everything, air, books, you, glass

5. What is not matter?  Light, sound, heat, electricity, time, thoughts,

6. How can we describe matter?  Either Chemically or Physically

7. What is a physical property?  A property that describes how the matter looks  Think describing words

8. What are some examples of physical properties?  Color, smell, shape, texture, temperature

9. What are some other physical properties?  Solubility, dissolving, conductivity,

10. What is conductivity?  When a metal can conduct heat and electricity.

11. What is solubility?  The same as dissolving, except it can be any state of matter.  Dissolving is solids into a liquid

12. What is a chemical property?  The way a substance can react with other substances to form new “stuff”

13. What are some examples of chemical properties?  Can rust, reactive, combustible, flammable, non-reactive

14. So what does this really mean?  It is how matter can change

15. What do chemical properties have to do with?  Reactivity

16. What is reactivity?  The ability to combine chemically with another substance

17. SORT IT OUT!  With your partner, look at the sheet given. In your notebook, sort the words into three columns:  1. Chemical property  2. Physical property  3. We are not sure

18. When matter changes, what is it called?  Either a chemical or physical change.

19. What is a physical change?  Actually changing the way the matter is shaped or looks

20. What are some examples of physical changes?  Cutting, grinding, dissolving, phase changes

21. What is a chemical change?  When matter changes how it looks  New substances are formed

22. What are some examples of chemical changes?  Burning, rotting, rusting

23. When something changes chemically what is the end result?  A completely new substance.

24. Sort it out!  With your partner, Sort the cards into two piles. In your notebook, sort the words into two columns:  1. Chemical change  2. Physical change

25. What are the three states of matter?  Solids, liquids and gases

26. What are the properties of solids?  Particles are tightly packed, don’t move freely  Lowest kinetic energy  Definite shape and volume

27. What are the properties of liquids?  Particles are close together, but can move past one another.  Take shape of container.  Definite volume, not definite shape

28. What are the properties of gases?  Do not touch one another. Spread apart.  Take shape of container  Highest kinetic energy  Not definite shape, not definite volume

29. Please refresh me on the phase changes  MeltingFreezing  EvaporationCondensation  SublimationDeposition

30. In your notebooks, draw this: LIQUID SOLID GAS

31. How else can we classify matter?  Either as a pure substance or a mixture

32. What is a pure substance?  Something that you can not break down any further by physical changes.

33. What are the two types of pure substances?  Elements and Compounds

34. What is an element?  A substance that can not be broken down into simpler substances.

35. What happens when elements combine chemically?  A compound is formed

36. How do you break apart a compound?  Only by undergoing a chemical change.

37. What is an example of a compound?  H 2 O (water), O 2 (oxygen gas), or Fe 2 O 3 (rust)

38.  A mixture What is it called when 2 or more pure substances combine?

39. Can mixtures be separated?  Yes, some are just harder to separate than others.

40. What are the 2 different kinds of mixtures?  Homogeneous and heterogeneous mixtures

41. What is a heterogeneous mixture?  A mixture with noticeably different parts.

42. What happens if a heterogeneous mixture sits?  It will separate

43. What is an example of a heterogeneous mixture?  Concrete, ranch dressing, a cow, chunky applesauce

44. Can you always just see the chunks in heterogeneous mixtures?  No, some say shake well.

45. If something says shake well, what is it?  A heterogeneous mixture with tiny chunks that will fall out of solution.

46. What is a homogeneous mixture?  A mixture where you cannot see the different parts. Also called solutions

47. What happens if a homogeneous mixture sits?  It stays mixed

48. What is an example of a homogeneous mixture?  Marker ink, salt water, air, tea

49. How can you separate mixtures?  Filtration  Chromatography  Decanting  Evaporation  Magnetic Attraction  Distillation

50. What is filtration?  Using a filter to separate solids from a liquid.

51. What is chromatography?  Separating liquids on a piece of paper based on their mass.  (Used for liquids that are mixed together that are different colors)

52. What is decanting?  Pouring off a liquid from a solid particle that separates by gravity.

53. What is evaporation?  Heating a liquid mixture, leaving behind a solid particle in the container.  (Used for a solid dissolved into a liquid)

54. What is magnetic attraction?  Using a magnet to remove one part of a mixture

55. What is distillation?  Using the boiling points of two different liquids mixed together.  (Used for 2 liquids mixed together that are the same color)