Oxidation and combustion

9.When does incomplete combustion typically occur?

10.Which word equation represents the complete combustion of propane?

11.What is the product when magnesium undergoes oxidation?

12.Which of the following is an example of oxidation?

13.A student heats a strip of copper in a Bunsen burner. The copper changes from brown to black. What word equation represents this reaction?

14.A factory burns methane as a fuel. In a well-ventilated furnace, which are the products of this combustion?

15.A gas heater in a poorly ventilated room may produce a poisonous gas. What is this gas?

16.A student burns 16 g of methane (CH₄) completely in excess oxygen. Using the equation CH₄ + 2O₂ → CO₂ + 2H₂O, what mass of carbon dioxide is produced? (Relative atomic masses: C=12, H=1, O=16)

17.Which of the following is a hydrocarbon?

18.When a fuel burns with a yellow, smoky flame, what is likely happening?

19.A student investigates the mass change when iron wool is heated in air. The iron wool gains mass. What is the best explanation?

20.In the reaction magnesium + oxygen → magnesium oxide, what are the reactants?

21.Which of the following is a product of incomplete combustion of a hydrocarbon?

22.A sample of air is analysed after a gas fire has been running in a sealed room. Which gas is likely to be present at a dangerous level due to incomplete combustion?

23.What three things are needed for combustion?

24.The word equation for the complete combustion of propane is: propane + oxygen → carbon dioxide + water. Which substance is the fuel?

25.A student heats a piece of copper in a Bunsen burner. The copper changes from brown to black. Which of the following word equations represents the reaction taking place?

26.A student investigates the mass change when iron wool is heated in air. The iron wool gains mass. What is the best explanation for this?

27.Which of the following is the correct word equation for the oxidation of magnesium?

28.What is the product when calcium undergoes oxidation?

29.Which word equation represents the complete combustion of methane?

30.A student heats a known mass of copper powder in a crucible and measures the mass after heating. The mass increases by 0.16 g. Assuming all the copper reacts to form copper oxide, what mass of oxygen combined with the copper?

31.A student investigates the combustion of methane in a closed container. After the reaction, the container contains carbon dioxide, water vapour, and some unreacted methane. What type of combustion occurred?

32.A fuel contains only carbon and hydrogen. When it burns completely in a plentiful supply of oxygen, which two products are formed?

33.A student places a glowing splint into a gas jar containing a colourless gas. The splint relights. Which gas is most likely present?

34.A 0.50 g sample of magnesium is burned in excess oxygen to form magnesium oxide. The mass of magnesium oxide produced is 0.83 g. What is the mass of oxygen that combined with the magnesium?

35.Which of the following is the correct word equation for the oxidation of iron?

36.A student sets up an experiment to show that oxygen is used up during combustion. They place a burning candle in a sealed jar and measure the volume of gas in the jar before and after the candle goes out. Which gas volume will decrease?

37.0.24 g of magnesium reacts completely with oxygen to form 0.40 g of magnesium oxide. What is the mass of oxygen that reacted?

38.A student investigates the mass change when a piece of iron wool is heated in a sealed container. The mass of the container and iron wool before heating is 50.00 g. After heating and cooling, the mass is 50.00 g. Why did the mass not change?

39.What is the name given to the burning of a fuel?

40.A student places a piece of burning magnesium ribbon in a gas jar of carbon dioxide. The magnesium continues to burn. Which element in the carbon dioxide is reacting with the magnesium?

41.Match each type of combustion to its products.

42.Order the steps for combustion to occur, starting with the first requirement.

43.Which of the following are products of complete combustion of a hydrocarbon? (Select all that apply)

44.Oxidation is defined as a substance gaining oxygen.

45.A student burns a hydrocarbon in a limited supply of oxygen. Which gas is produced that is particularly dangerous?

46.What is the name given to a compound that contains only hydrogen and carbon?

47.Place the following in the correct order for the fire triangle: fuel, oxygen, heat. (List from first to last in terms of being essential, but order does not matter as all are equally required.)

48.Which of the following are products of incomplete combustion? (Select all that apply)

49.Incomplete combustion produces carbon monoxide, which is a poisonous gas.

50.A student heats a known mass of copper powder in an open crucible. The mass increases. Which statement best explains why the mass increases?

51.Complete the word equation for the oxidation of magnesium.

52.Complete the word equation for the oxidation of calcium.

53.Complete the word equation for the oxidation of aluminium.

54.State the products of complete combustion.

55.State the products of incomplete combustion.

56.State what elements hydrocarbons consist of.

57.State the three things that are required for combustion to occur.

58.Describe why incomplete combustion is dangerous.

59.Complete the word equation for the complete combustion of methane.

60.Complete the word equation for the complete combustion of ethane.

61.Complete the word equation for the complete combustion of butane.

62.Complete the word equation for the incomplete combustion of methane.

63.Oxidation is one example of a chemical reaction. State three ways that we can tell a chemical reaction has occurred.

64.A student places a burning splint into a gas jar containing a gas produced by incomplete combustion. The splint does not relight. Explain why this gas is dangerous even though it does not relight the splint.