SNC 2D1 Chemistry Unit Exam Review
Name ___________________
1. What is a physical property? Provide 3 examples.
2. What is a chemical property? Provide 3 examples.
3. What is a physical change? Provide 3 examples.
4. What is a chemical change? Provide 3 examples.
5. What are 5 clues that a chemical change has occurred?
6. What test can be done to detect oxygen gas? Glowing splint (re-ignite)
7. What test can be done to detect hydrogen gas> Burning splint (pop)
8. What are 3 properties of a non-metal?
9. What are 3 properties of a metal?
10. Using the following diagram to:
a. Identify the name of each chemical family (group)
b. show the charge given to each group
c. show the valence electrons for each group
11. Write the following elements in Standard Atomic Notation:
a. Potassium
b. Nitrogen
c. Sodium
d. Iodine
12. Draw a Lewis Dot Diagram for each element in question 11.
13. Draw a Bohr-Rutherford diagram for each element in question 11.
14. What is an ion? An element that has lost or gained an electron and now has a
charge.
15. Write the Ion symbol for each element in question 11. K+ N-3 Na+ I-1
16. What is a diatomic molecule? HOFBrINCl.
17. What elements are diatomic?
18. What type of components (metals/non-metals) make up the following compounds:
a. Ionic metal bonded to nonmetal
b. Molecular non-metal bonded to non-metal
19. Write the correct chemical formula and name for the following ionic compounds
formed by the following pairs of elements:
Elements
Formula
Name
lithium and nitrogen
Li3N
Lithium nitride
calcium and fluorine
CaF2
Calcium flouride
iron (III) and oxygen
Fe2O3
Iron (III) oxide
20. Write the correct chemical formula or name for the following polyatomic
compounds:
21.
Chemical Formula
Name
NaOH
sodium and hydroxide
FeSO4
Iron (II)sulphate
K2SO4
Potassium sulphate
Sn(NO3)4
tin (IV) and nitrate
Write the correct chemical formula or name for the following molecular
compounds:
Chemical Formula
Name
NF3
nitrogen trifluoride
H2O
dihydrogen monoxide
PCl5
Phosphorus hexachloride
N2O4
Dintrogen tetraoxide
22. In the following word equation, which elements or compounds are the reactants
and which are the products:
copper + silver nitrate  silver + copper (II) nitrate
reactants
products
23. Balance the following equations:
a. _____ Zn
+
____2_ HCl
 ______ ZnCl2 + ______ H2
b. ______CH4 + ____2__ O2  ______ CO2 + __2____H2O
c. ______BeCl2 + ___3___O2  ______Be(ClO3)2
24. For each of the following, write out the skeleton equation and balance it. Don’t
forget HOFBrINCl the clown!
a. copper (II) oxide + hydrogen  copper + water
Cu2O + H2
→ 2 Cu + H2O
b. calcium + water  calcium hydroxide + hydrogen gas
Ca +2 H2O →
Ca(OH)2 + H2
25. Identify what type of reaction the following equations represent and balance
them:
a. HCl + NH3  NH4Cl ______
synthesis
b. Br2 + CaI2  I2 + CaBr2 _____
Single displacement
c. 2NI3  N2 + 3 I2
___
Decomposition
d. Pb(NO3)2 + 2 KI  PbI2 + 2 KNO3 _______ Double
Displacement
26. Write out a word equation for the following double displacement reaction: (use
words (names), not symbols/formulas)
CaCl2 and Na2SO4 react to form CaSO4 and NaCl
27. Complete the equation for the following types of reactions:
a. (double displacement)
aluminum sulfate and sodium hydroxide
 sodium sulfate + aluminum hydroxide
b. (single displacement)
Al + HCl  Aluminum chloride and hydrogen gas
28. What are the indicators that a substance is an acid (i.e. what things can you do to
determine if it’s an acid)?
Test with red litmus paper – paper stays red acid , check pH less than 7
29. What are the indicators that a substance is a base (i.e. what things can you do to
determine if it’s a base)?
Red litmus paper turns blue, pH is greater than 7
30. What does pH represent?
Power of hydrogen
31. What pH does an acid have? What pH does a base have?
32. What is neutralization? Acid reacting with a base
33. What type of reaction is neutralization? Double displacement
34. What are the products in a neutralization reaction? Salt and water