Name:
Period:
Science 10 Pre – Test for Chemistry
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Answer all the questions in preparation for your unit test, remember, all the material covered in the
pre – test will be on the unit test. This is an open book assignment.
Chapter 4.1 Atomic Theory and Bonding
1. Fill in the table regarding sub atomic particles (6 marks)
Sub atomic particle
Charge
Proton
Electron
Neutron
2. What two things does the atomic number tell you? (2 marks)
3. What is the number of neutrons in an atom of Sulphur? (1 mark)
4. How does an atom become an ion? (1 mark)
5. Why do non-metals become negative ions? (1 mark)
6. How many valence electrons are in the atom below? (1 mark)
Location in the atom
7. What is the relationship between valence electrons and families? (1mark)
8. Draw a Bohr diagram of a fluorine atom and ion (2 marks)
Fluorine Atom
Fluorine Ion
9. Draw a Lewis diagram of a fluorine atom and ion (2 marks)
Fluorine Atom
Fluorine Ion
10. What types of atoms for ionic bonds? (2 marks)
11. What types of atoms form covalent bonds? (2 marks)
12. What are the seven diatomic molecules? (7 marks)
13. How many lone pairs and bonding pairs are in this compound? (2 marks)
Lone pairsBonding Pairs-
4.2 Names and Formulas of Compounds
14. Write the name and formulas for the following compounds. (14 marks)
Chemical name
Formula
# of atoms
Sodium hydroxide
Fe(OH)2
Nickel II hydrogen carbonate
Cu(HSO3)2
Ammonium chromate
Sr3(PO4)2
Copper II nitride
15. Write the formula or name for the following covalent compounds. (4marks)
Formula
Name
Sulfur trioxide
Dinitrogen monoxide
PBr3
N2S3
4.3 Chemical Equations
16. Balance the following chemical equations. (4 marks)
17. Write the skeletal equations for the following chemical reactions and balance them. Be sure to check
your formulas carefully before you begin to balance. (3 marks)
Chapter 5.1 Acids and Bases
18. What is the color of each of these acid-base indicators in the following solutions?
(2marks)
a. Methyl orange in stomach acid ________________
b. Bromothymol blue in banana juice _____________
19. Name the following acids. (3 marks)
a. HBr _____________________________
b. H2SO4 ___________________________
c. HClO4 ___________________________
20. Identify the following as an acid, base or salt.(3 marks)
5.2 Salts
21. Identify each of the following as an acid, a base, a salt, a metal oxide, or a non-metal oxide. (5
marks)
22. Complete the following statements. (4 marks)
a. A metal oxide combines with water to form a (n) ______________________.
b. A non-metal oxide combines with water to form a (n) ________________________.
c. An acid and base combine to form a (n) ______________________ and _______________________.
5.3 Organic Compounds
23. Identify which of the following are organic compounds. (4 marks)
Compound
Organic or Inorganic
CaCO3
CaH2
CH4
H2CO3
6.1 Types of Chemical Reactions
24. Identify each reaction as synthesis, decomposition, single replacement, double replacement,
neutralization, or combustion. (6 marks)
6.2 Factors Affecting the Rate of Chemical Reactions
25. Explain how the following increase the rate of a chemical reaction. (4 marks)
Factor
Temperature
Surface area
Concentration
Catalyst
Explanation