Review - MATERIAL WORLD

1.    Explain the differences between a solid , liquid , and gas.

2.    Define mass, volume, density. What is the formula used to calculate density?

3.    Based on the following data, will rubber float (be buoyant) or sink in corn syrup?

4.    a) What is the difference between a “characteristic property” and a “non-characteristic property” of a substance?

b) List examples of characteristic properties.

c) List examples of non-characteristic properties.

5.    a) The pH of ocean water is 8.0. The pH of cheese is about 5.5. State whether each subject is an acid, base, or neutral.

b) What pH value corresponds to a neutral substance?

6.    a) How is litmus paper used to test the pH value of a substance? Which colour(s) indicate which pH value(s)?

b) How is pH paper (a.k.a. universal indicator paper) used to test the pH value of a substance? Which colour(s) indicate which pH value(s)?

7.    a) What is the difference between a physical and a chemical change?

b) Give an example of each.

8.    a) Explain the differences between pure substances & mixtures.

b) Explain the differences between homogeneous mixtures (solution) and heterogeneous mixtures.

9.    Define

a) dissolution

b) Soluble

c) solvent

d) solute

10.           a) Draw a diagram of each of the 4 mixture separation techniques for mixtures (sedimentation, decantation, filtration, distillation).

b) For each technique give an example of a solution that it can separate.

11.           Explain the differences between an atom, an element, a molecule, and a compound.

12. Write a paragraph to explain how the periodic table is organized using keywords such as periods, groups (families), metals, metalloids, non-metals, etc.