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Unit B Midterm Exam Review
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Date:
Reference: read pages 92 – 177 in Science in Action 9 text.
1. WHMIS stands for
2. Know your symbols!! Label each of the following WHMIS symbols.
3. Label the diagram with the following terms. Be sure to include arrows.
Solid, liquid, gas, melting, evaporation, condensation, sublimation, deposition, freezing
4. Describe the difference between a physical change and a chemical change.
5. Relate the following terms.
a. element / compound
b. solute / solvent
c. suspension / colloid
6. What are 4 ways to identify that a chemical reaction (change) took place?
a.
b.
c.
d.
7. Identify what each scientist is responsible for.
a. Democritus:
b. Robert Boyle:
c. Lavoisier:
d. John Dalton:
e. Thomson:
f. Nagaoka:
g. Rutherford:
h. Bohr:
i. Chadwick:
8. Draw a Bohr diagram for the following elements.
a. Magnesium atom
b. sulfur atom
c. potassium ion
d. chlorine ion
9. What does the atomic number tell you?
10. What does the atomic mass tell you?
11. What does the term amu mean?
12. Calculate the number of neutrons in the following elements.
a. calcium
b. iron
c. tungsten
13. Give chemical names for the following compounds.
a. sodium reacts with fluorine

b. magnesium reacts with bromine

c. sulfur reacts with oxygen

d. beryllium reacts with phosphorus

e. nitrogen reacts with phosphorus

f. silver reacts with nitrogen

g. nitrogen reacts with oxygen

h. nickel (III) reacts with nitrate

i. tin (II) reacts with sulphate

j. lead (IV) reacts with hydroxide

14.Give chemical formulas for the compounds found above.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
15. Write word equations for the following.
a. A reaction between calcium and oxygen produces calcium oxide.
b. Lead (II) iodide and potassium nitrate are produced when potassium iodide is added
to lead (II) nitrate.
16. Write chemical formula equations for the following.
a. zinc and hydrochloric acid are added together to produce hydrogen gas and zinc chloride
b. When sugar (C12H22O11) and sulfuric acid (H2SO4) are combined, carbon, water, and sulfur
dioxide are formed.
17. The Law of Conservation of Mass states that
18. Consider the following reaction.
11 grams of sodium bicarbonate is added to 7 grams of acetic acid. After the reaction the
mass of the products was found to be 15 grams.
Account for any differences.
19. According to the text, there are 4 factors that affect the rate of a chemical reaction. What are
they?
a.
b.
c.
d.