Demonstrate an understanding of the different types of chemical reactions.
Balance the following chemical reactions:
Mg + O2
→ MgO
Cu2
O + H3
PO4 → Cu3
PO4 + H2
O
(NH4
)
2
S + CoCl3 → Co2
S3 + NH4
Cl
Identify each of the following reactions as synthesis, decomposition, single displacement, or double displacement.
aluminum bromide + chlorine → aluminum chloride + bromine
beryllium carbonate → beryllium oxide + carbon dioxide
aluminum + chlorine → aluminum chloride
ammonium chloride + mercury(I) acetate → ammonium acetate + mercury(I) chloride
Complete the following neutralization reactions. Word equations should be completed as word equations, and chemical equations should be completed as balanced chemical reactions.
sulphuric acid + lithium hydroxide →
KOH + H2
SO4 →
For one of the fuels in gasoline, pentane (C5 H ), complete the following combustion 12 reactions. Make certain your equations are balanced.
complete combustion C5 + O2 H12 →
incomplete combustion C5 + O2 H12 →
Overall expectation 2: I can investigate different types of chemical reactions.
For each of the following chemical reactions, identify the type of reaction based on the reactants present. Write chemical formulas for the expected products and state one qualitative observation that an observer would expect to see. (In all cases, a reaction will occur. There is no need to balance these chemical reactions.)
Type of reaction? Reactants Products Potential qualitative evidence
Li(s) + O2 (g) →
+ Cu(NO3 Fe(s) )2 (aq) →
NaCl(s) →
CH4 (g) + O2 (g) →
Use both the metal and the halogen activity series to predict whether each of the following reactions will occur. Write the formulas for the products and balance the equation, if the reaction does take place.
AgNO3 + Zn →
Cl2 + NaI →
Fe + Al2
O3
Overall expectation 3: Analyze chemical reactions used in a variety of applications, and assess their impact on society and the environment.
Many iron-containing alloy parts, such as ductwork in your home, mufflers on your vehicle, and hardware used in construction, are galvanized (coated with zinc).
What is the purpose of galvanizing these parts?
Explain your answer to part a, using the activity series. One or two sentences will suffice.
In Ontario, some electricity comes from coal-burning generators. Coal is a natural form of carbon that has a large amount of sulphur mixed in with it. Here are the balanced equations for the combustion of coal and sulphur:
carbon + oxygen → carbon dioxide
C + O2
→ CO2
sulphur + oxygen → sulphur dioxide
S + O2
→ SO2
Answer the following questions based on the burning of coal to produce energy:
In what way is the combustion of sulphur harmful to the environment?
Write the word equation and balanced chemical equation for the reaction that produces this harmful environmental effect.
Furnaces in residential homes usually burn natural gas, which is mostly methane, CH4.
Here is the balanced equation for the complete combustion of methane:
CH4
+ 2O2
→ CO2
+ 2H2
O
Explain why it is important to make sure your furnace is serviced and in proper working order before the winter. Be sure to include information about combustion reactions in your answer.
What safety precautions should you take if your house has a furnace?
Recently, the European Union considered labelling crude oil from the oil sands in Alberta “dirty” as it produces more greenhouse gases in obtaining it compared to other methods of obtaining oil. This would make Alberta oil less welcome in European refineries. It would be a blow to the industry if European countries reduced the amount of oil they purchased from the oil sands. Use print and electronic sources to research this issue.
Do you agree or disagree that the oil should be labelled as “dirty”? Explain your position.
(Recall the interactive Writer’s Desk you used to help you write an opinion piece in Learning Activity 10)
