31. Draw diagrams to show the behaviour of particles in each of the three states of matter.
32. Classify each of the following as a solution, mixture, or pure substance.
A. a cup of coffee _______________
B. a glass of distilled water ______________
C. a pizza ______________
D. gasoline ________________
33. Compare the density of a gas to the density of a liquid. Your answer may include an illustration to
explain the density differences.
34. What is at the centre of an atom?
35. How is the mass number for an atom calculated?
36. Describe the experimental evidence obtained by J. J. Thomson that made it necessary to revise John
Dalton’s model of the atom.
37. How would Rutherford’s conclusions change if all of the alpha particles went straight though the
gold foil?
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