Classification of MatterName

Review Sheet

1. Define the following

  • Element
  • Compound
  • Mixture
  • Pure substance
  • Heterogeneous mixture
  • Homogeneous mixture
  • Matter

2. Using the words above plug them into the concept map below:

  1. Describe the difference between an atom and a molecule.
  1. Describe the difference between an element and a compound.
  1. Describe the difference between a compound and a mixture.
  2. Identify the following as elements, compounds or mixtures:

Tomato soup

Gold

Distilled water

Carbon dioxide

Breakfast cereal

Sand

Oxygen

Hydrogen

Water

  1. What happens to the physical and chemical properties of a compound when it is broken down into its elements?
  1. How were the properties of water different than hydrogen and oxygen?
  1. Describe two ways mixtures can be separated.

  1. What is a physical change?
  1. What is a chemical change?

Identify the following as either physical or chemical changes:

  1. Water is boiled in preparation for making pasta
  1. Old ham goes bad in the refrigerator
  1. A rock star gets a tattoo on his forehead
  1. A freshman gets their tongue pierced.
  1. Sand is mixed with water
  1. A silver spoon tarnishes
  1. sugar dissolves in water
  1. Water condenses into dew.
  1. water freezes
  1. Iron Rusts
  1. Thousand Island dressing and mayonnaise are mixed to make “secret sauce” for hamburgers

Identify the five boxes at the right as:

23an element,

24 a compound,

25 a mixture of elements,

26 a mixture of compounds,

27 a mixture of elements and compounds.

Elements

28.An element is made up of ______kind(s) of atom(s).

29.An element cannot be broken down into ______.

30. An element contains ______types of atoms throughout.

Compounds

31. A compound is made up of ______kind(s) of atom(s).

32.Compound can be broken down by ______change into simpler substances.

33. A compound has ______properties than the elements which make it up.

Mixtures

34. A mixture is made up of ______types of substances.

35. A mixture can be separated by ______change.

36. A mixture has ______properties as the substances making it up.

37 Heterogeneous mixtures are ______throughout.

38. Homogeneous mixtures are ______throughout.

39. A solution is a ______mixture.

40. The particles in a solution spread out ______.

41. A solution will be ______and you can see through it.

42. An element symbol tells you:

43. A chemical formula tells you:

44. A molecule is made of ______.

45. At atom is the smallest part of an ______that is still that ______.

Electrolysis of Water

46. How did electrolysis of water show that water was a compound?

47 How did the electrolysis of water show that compounds have different properties than the elements that make it up?

48. What were the properties of oxygen and hydrogen that you identified?

ChromatographyLab

49. How did you separate the different dyes in the chromatography lab?

50. How did you know that they dyes in the black were a mixture and not a black compound?

Counting Atoms—How many of each element are present in these compounds?

51. H2O2

52. Fe2(CrO4)3

53. Ca(OH)2

54. C12H22O11