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 359 · Easy
Question 151
3 marks · Easy
Answer and see the solution →A student investigates the reaction of four metals (A, B, C, D) with dilute hydrochloric acid. The results are given in the table:
Observed reactions with dilute hydrochloric acid. Metal Observation A rapid fizzing B no reaction C slow bubbling D moderate fizzing (a)[1 mark]Arrange the metals in order of decreasing reactivity with dilute hydrochloric acid.
(b)[1 mark]Which metal is most likely copper? Explain your answer.
(c)[1 mark]Suggest a possible identity for the most reactive metal, A.
Question 152
2 marks · Easy
Answer and see the solution →Gallium is a metal that is placed between aluminium and zinc in the reactivity series. Copper is below both aluminium and zinc in the reactivity series.
Predict whether gallium will be able to displace copper from copper(II) sulfate solution. Use the reactivity series to explain your reasoning.
(a)[2 marks]Will gallium displace copper from copper(II) sulfate solution? Explain your answer using the reactivity series.
(b)[0 marks]Question 153
1 mark · Easy
Answer and see the solution →A piece of rubidium metal is added to cold water. Predict what will happen. Use the reactivity series in your answer.
Question 154
3 marks · Easy
Answer and see the solution →A new metal, Q, lies between magnesium and zinc in the reactivity series.
(a)[1 mark]Predict whether metal Q will react with cold water. State your reasoning.
(b)[2 marks]Predict whether metal Q will react with dilute hydrochloric acid at room temperature. State your reasoning.
Question 155
2 marks · Easy
Answer and see the solution →When 1.0 g of an unknown metal (X) is added to excess dilute sulfuric acid at room temperature, 0.067 g of hydrogen gas is released. Given that the metal is above hydrogen in the reactivity series, predict whether magnesium or iron is more likely to be metal X. Show your reasoning.
Question 156
1 mark · Easy
Answer and see the solution →State what forms on iron when it rusts.
Question 157
3 marks · Easy
Answer and see the solution →The picture below shows a steel fence post that has rusted at the base after several years in a damp garden.
(a)[2 marks]State two conditions necessary for rusting to occur on the steel post.
(b)[1 mark]Name one method, other than painting, which could have prevented rusting of the steel post.
Question 158
2 marks · Easy
Answer and see the solution →Explain why galvanising is able to protect iron from rusting even when the zinc coating is scratched.
Question 159
3 marks · Easy
Answer and see the solution →The table below shows the results of an experiment. Three identical iron nails were placed under different conditions for 10 days to investigate rusting.
Rusting of iron nails under different conditions. Test tube Conditions Rust formed after 10 days? 1 Air only No 2 Water only (boiled, air excluded) No 3 Air and water Yes (a)[1 mark]Which test tube shows the conditions needed for rusting?
(b)[2 marks]Explain why no rust formed in test tube 2.
Question 160
1 mark · Easy
Answer and see the solution →State one reason why coating iron with oil or grease helps prevent rusting.