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Name:
Block:
Science 9: Chemistry Pre – Test
1. Explain what WHMIS stands for and identify the following symbols(5 marks):
2. Define the term density. (2 marks)
3. Explain the difference between a physical change and a chemical change.(2 marks)
4. Explain what happens to kinetic energy when heat is added or removed.(2 marks)
5. How do you determine the number of neutrons in an atom?(2 marks)
6. What two things will the atomic number tell you?(2 marks)
7. What is the rule about electron arrangement in an atom?(3 marks)
8. Draw an atom an ion of aluminum.(4 marks)
9. Where are the valence electrons located on an atom?(1 mark)
10. Explain the difference between a covalent and ionic bond.(2 marks)
11. Name the four chemical families. Which family is nonreactive?(5 marks)
12. Use the periodic table to complete the chart.(14 marks)
Chemical name
Formula
Sodium hydroxide
Fe(OH)2
Nickel II hydrogen carbonate
Cu(HSO3)2
Ammonium chromate
Sr3(PO4)2
Copper II nitride
13. Label the arrows to indicate the changes in state.(6 marks)
14. Briefly explain the particle model of matter?(4 marks)
# of atoms
15. Use the chart to check off the characteristics of metal and non metals.(4 marks)
Conductivity
Metals
Nonmetals
16. Explain what a pure substance is.(1 mark)
17. Draw a Bohr diagram of sodium chloride. (2 marks)
18. Draw a Lewis diagram of a Fluorine atom. (1 mark)
19. Balance the following equation. (1 mark)
_____ Al + _____ CuCl2  _____ Cu + _____ AlCl3
Malleability and ductile