Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Reactions of metals with water
18 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
2 marks · Normal
Answer and see the solution →State the general word equations for:
(a)[1 mark]the reaction of a metal with cold water,
(b)[1 mark]the reaction of a metal with steam.
Question 2
4 marks · Normal
Answer and see the solution →Potassium, sodium, lithium, and calcium all react with cold water, but in different ways.
(a)[2 marks]Describe two observations you would make when potassium is added to cold water.
(b)[2 marks]Explain what happens to calcium granules when they are added to cold water.
Question 3
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 4
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 5
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 6
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 7
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 8
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)