Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Reactions of metals with water
18 practice questions
Practice questions
11–18 of 18
Question 11
3 marks · Normal
Answer and see the solution →Explain, using the reactivity series, why copper is suitable for use in water pipes but zinc is not.
Question 12
4 marks · Normal
Answer and see the solution →The following table lists four metals and the conditions under which they react with water:
Metals, type of water present, and observed reaction. Metal Condition Observation Sodium cold water Magnesium cold water Magnesium steam Copper steam Complete the table with the observations you would expect for each case.
Question 13
1 mark · Normal
Answer and check →Which observation is typical when lithium is added to cold water?
- A.A lilac flame appears above the water.
- B.The metal floats, fizzes, and moves slowly on the surface.
- C.The water becomes orange and the metal disappears with no gas.
- D.A yellow solid is immediately formed in the water.
Question 14
2 marks · Normal
Answer and see the solution →Name the solid products formed when:
(a)[1 mark]zinc reacts with steam,
(b)[1 mark]iron reacts with steam.
Question 15
4 marks · Normal
Answer and see the solution →Some metals do not react with water or steam.
(a)[2 marks]State whether aluminium reacts with steam and explain your answer with reference to its oxide layer.
(b)[2 marks]Explain why copper does not react with cold water or steam.
Question 16
3 marks · Normal
Answer and see the solution →When 7.2 grams of magnesium ribbon are heated in steam, magnesium oxide and hydrogen gas are produced. The equation for the reaction is:
Calculate the volume (in dm) of hydrogen gas produced at room temperature and pressure (RTP) from this reaction. (Molar mass of Mg = 24 g/mol; the molar volume of a gas at RTP = 24 dm/mol)
Question 17
5 marks · Hard
Answer and see the solution →The table shows a list of four metals. Each can be added to a beaker of cold water. For each metal, describe what you would observe, and name the gas produced.
(a)[2 marks]Potassium is added to cold water.
(b)[1 mark]Sodium is added to cold water.
(c)[1 mark]Calcium granules are added to cold water.
(d)[1 mark]Lithium is added to cold water.
Question 18
2 marks · Hard
Answer and see the solution →Iron reacts with steam to form a black solid and hydrogen gas. State the name and chemical formula of the black solid formed.