SCH3U / Unit 2 Test
Chemical Reactions / Name: / Date: / 48

Part A: Multiple Choice [6 marks]

  1. Which reactants would likely form carbon dioxide gas?
  2. NH4Cl (aq)+KOH (aq)
  3. HCl (aq)+Na2CO3 (aq)
  4. ZnCl2 (aq)+K2CO3 (aq)
  5. NaOH (aq)+HClO3 (aq)
  1. Which metal reacts with hydrochloric acid but not with water?
  2. Barium
  3. Copper
  4. Sodium
  5. Zinc
  1. Which chemical forms a precipitate when it is added to a sodium acetate solution?
  2. lead (II) nitrate
  3. silver chlorate
  4. potassium nitrate
  5. magnesium chloride
  1. Which observations would you not expect to make during the reaction of sodium with water?[I]
  2. A precipitate forming
  3. A popping sound when testing with a burning splint
  4. The sodium disappearing
  5. Red litmus turning blue
  1. Which of these compounds would form a basic solution when added to water?
  2. nitrogen oxide
  3. calcium oxide
  4. carbon dioxide
  5. sodium acetate
  1. Which of the following is a balanced chemical reaction for the complete combustion of methane (CH4)?
  2. 2CH4 (g) + 5O2 (g)  2C(s) + 2CO(g) + 2CO2(g) + 4H2O(g)
  3. CH4 (g) + CO2 (g)  2CO(g) + 2H2O(g)
  4. CH4 (g) + 2O2 (g)  CO2(g) + 2H2O(g)
  5. CH4 (g) + O2 (g)  CO2(g) + H2O(g)

Part B: Nomenclature [8 marks]

  1. Write the correct name(s) for the following: [K-4]
  2. NO______
  3. Fe(ClO4)2______
  4. H3PO4 (aq)______
  5. Ba3N2 . 8H2O______
  1. Write the correct chemical formula for each of the following: [K-4]
  2. sulfurous acid______
  3. copper (II) phosphide______
  4. xenon pentafluoride______
  5. sodium hyponitrite______

Part C: Short Answer [34 marks]

  1. Predict the products of the following reactants, write a balanced chemical equation and identify the type of chemical reaction. If no reaction occurs, write N. R. [I-15]

a)N2H4(g)

b)KI(s) + Cl2 (g) 

c)Al(s) + Na2SO4 (aq) 

d)FeO2 (s) + H2O(l) 

e)Na2S(aq) + Al(NO3)3 (aq)

  1. Write the total ionic and net ionic equation for (e) of Question #9. [C-4]
  1. A student ignites acetylene gas, C2H2, in a small test tube and produces a large amount of soot.
  2. What type of reaction occurred? [K-1]
  1. Predict the products of the reaction and write a balanced chemical equation. [I-3]
  1. One of your friends does not understand how to predict whether a single displacement reaction will occur. Write an explanation to help your friend. [C-3]
  1. A clear, colourless solution was left in an unlabeled beaker on the chemistry bench from the previous day’s experiment. The classes had used two solutions yesterday: aqueous hydrochloric acid and aqueous silver nitrate. The identity of the solution would be determined through simple diagnostic tests. [A-8]

The solution turned blue litmus paper red and when a piece of zinc was place in a test tube with the solution, bubbles began to form on the surface of the metal. The gas that formed was then exposed to a lit splint and created a small ‘pop’ noise.

a)List one physical property of the solution and one chemical property of the solution. [1]

b)Write a word equation representing the reaction of the solution with zinc. [2]

c)Give the balanced chemical equation for the reaction in b). Indicate the type of chemical reaction. [3]

d)What results would have been expected from the diagnostic tests if the identify of the solution was actually aqueous silver nitrate? [2]