Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Inorganic Chemistry
869 practice questions
Topics covered
- The Alkali Metals85 practice questions
- The Halogens86 practice questions
- Gases in the Atmosphere86 practice questions
- Reactivity Series163 practice questions
- Extraction and Uses of Metals128 practice questions
- Acids, Alkalis and Titrations83 practice questions
- Acids, Bases and Salt Preparations156 practice questions
- Chemical Tests68 practice questions
Practice questions
151–160 of 374 · Normal
Question 151
3 marks · Normal
Answer and see the solution →A teacher places a strip of an unknown metal, labelled M, into cold water. No reaction is seen.
The teacher then adds M to cold dilute hydrochloric acid. No reaction is seen, even after warming.
Explain what these results suggest about the position of metal M in the reactivity series. Give a reason for your answer.
Question 152
4 marks · Normal
Answer and see the solution →A student investigates the reactions of five metals with dilute hydrochloric acid at room temperature.
Table 1: Observations of the reactions Metal Observation with dilute HCl Sodium Fizzes rapidly, dissolves Magnesium Slow bubbles, dissolves gradually Iron Very slow bubbles, little change Copper No reaction Calcium Bubbles rapidly, cloudy solution (a)[1 mark]Arrange the five metals in order of decreasing reactivity with dilute hydrochloric acid (most to least reactive).
(b)[1 mark]Predict whether magnesium will react with steam. Give a reason for your answer.
(c)[2 marks]Suggest, with a reason, if copper will react with silver nitrate solution.
Question 153
1 mark · Normal
Answer and check →Which metal could be used to displace nickel from nickel(II) sulfate solution?
- A.Silver
- B.Tin
- C.Iron
- D.Copper
Question 154
2 marks · Normal
Answer and see the solution →Cobalt (Co) lies between iron and copper in the reactivity series.
Predict what would happen if a strip of cobalt was placed in a solution of iron(II) sulfate. Explain your answer.
Question 155
4 marks · Normal
Answer and see the solution →Titanium is a metal that lies between aluminum and zinc in the reactivity series.
(a)[2 marks]Predict whether titanium will react with dilute sulfuric acid at room temperature. Give a reason for your answer.
(b)[2 marks]Suggest what would happen if titanium powder is heated with steam. Name a product that would be formed.
Question 156
2 marks · Normal
Answer and see the solution →State the two conditions necessary for the rusting of iron.
Question 157
4 marks · Normal
Answer and see the solution →(a)[2 marks]Describe two ways to prevent iron from rusting.
(b)[2 marks]Explain why galvanising can still protect iron even if the zinc coating is scratched.
Question 158
3 marks · Normal
Answer and see the solution →Explain why covering iron with a plastic coat is less effective at preventing rust than galvanising, especially if the plastic is damaged.
Question 159
4 marks · Normal
Answer and see the solution →The table shows observations of iron nails kept under different conditions for two weeks.
Test tube Condition Rust observed after 2 weeks? A Nail in dry air (no water) No B Nail in boiled water, oil layer on top (no air) No C Nail in ordinary water, exposed to air Yes (a)[2 marks]Use the data to state the two conditions needed for rusting.
(b)[1 mark]Suggest why no rust formed in test tube B.
(c)[1 mark]Explain why rusting happened in test tube C.
Question 160
1 mark · Normal
Answer and check →Which statement best explains how galvanising prevents rusting of iron?
- A.Zinc forms a hard barrier that cannot be scratched.
- B.Zinc reacts with water to make rust.
- C.Zinc is more reactive than iron and corrodes first.
- D.Zinc keeps air away by making the iron heavier.