Redox — Paper 1 · IGCSE Physical Science 0652

8 The diagram shows an experiment. crucible magnesium ribbon heat The crucible and contents are weighed before heating and then reweighed when cool. What happens to the mass of the crucible and contents? the mass because the magnesium is A decreases oxidised B decreases reduced C increases oxidised D increases reduced

1 marks

Answer: C

This question in 0652/11 Oct/Nov 2006

13 Water reacts with Group I metals. 2H2O + 2X → H2 + 2XOH In this reaction, the water is …1… . On going down Group I, the reaction becomes more …2… . Which words correctly complete the gaps? 1 2 A oxidised endothermic B oxidised exothermic C reduced endothermic D reduced exothermic

1 marks

Answer: D

This question in 0652/11 Oct/Nov 2007

16 The equation describes a reaction which occurs in a blast furnace. Fe2O3 + 3CO → 2Fe + 3CO2 Which substance is reduced? A carbon dioxide B carbon monoxide C iron D iron(III) oxide

1 marks

Answer: D

This question in 0652/11 Oct/Nov 2009

7 Which change shows a reduction? A S SO2 D B H2S SO3 C

1 marks

Answer: C

This question in 0652/11 Oct/Nov 2010

5 The diagram shows wood burning in air. Which two words describe what happens to the wood and the type of reaction taking place? wood is type of reaction A oxidised endothermic B oxidised exothermic C reduced endothermic D reduced exothermic

1 marks

Answer: B

This question in 0652/11 Oct/Nov 2011

5 The diagram shows wood burning in air. Which two words describe what happens to the wood and the type of reaction taking place? wood is type of reaction A oxidised endothermic B oxidised exothermic C reduced endothermic D reduced exothermic

1 marks

Answer: B

This question in 0652/12 Oct/Nov 2011

6 Zinc reacts with steam to form zinc oxide and hydrogen. Zn + H2O → ZnO + H2 During the reaction, which substance is oxidised? A hydrogen B water C zinc D zinc oxide

1 marks

Answer: C

This question in 0652/11 Oct/Nov 2013

6 Zinc reacts with steam to form zinc oxide and hydrogen. Zn + H2O → ZnO + H2 During the reaction, which substance is oxidised? A hydrogen B water C zinc D zinc oxide

1 marks

Answer: C

This question in 0652/12 Oct/Nov 2013

7 The equation for the reaction of magnesium with copper(II) oxide is shown. CuO + Mg → MgO + Cu Which statement is correct? A Copper(II) oxide is oxidised. B Copper(II) oxide is reduced. C Magnesium oxide is oxidised. D Magnesium oxide is reduced.

1 marks

Answer: B

This question in 0652/11 Oct/Nov 2014

7 The equation for the reaction of magnesium with copper(II) oxide is shown. CuO + Mg → MgO + Cu Which statement is correct? A Copper(II) oxide is oxidised. B Copper(II) oxide is reduced. C Magnesium oxide is oxidised. D Magnesium oxide is reduced.

1 marks

Answer: B

This question in 0652/12 Oct/Nov 2014

9 Hydrogen is passed over a heated metal oxide as shown. metal oxide excess of hydrogen burning hydrogen heat The metal and steam are formed. What happens to the hydrogen and to the metal oxide? hydrogen metal oxide A oxidised oxidised B oxidised reduced C reduced oxidised D reduced reduced

1 marks

Answer: B

This question in 0652/11 Oct/Nov 2016

9 Hydrogen is passed over a heated metal oxide as shown. metal oxide excess of hydrogen burning hydrogen heat The metal and steam are formed. What happens to the hydrogen and to the metal oxide? hydrogen metal oxide A oxidised oxidised B oxidised reduced C reduced oxidised D reduced reduced

1 marks

Answer: B

This question in 0652/12 Oct/Nov 2016

6 The diagram shows wood burning in air. Which two words describe what happens to the wood and the type of reaction taking place? wood is type of reaction A oxidised endothermic B oxidised exothermic C reduced endothermic D reduced exothermic

1 marks

Answer: B

This question in 0652/11 Oct/Nov 2017

6 The diagram shows wood burning in air. Which two words describe what happens to the wood and the type of reaction taking place? wood is type of reaction A oxidised endothermic B oxidised exothermic C reduced endothermic D reduced exothermic

1 marks

Answer: B

This question in 0652/12 Oct/Nov 2017

9 Which reaction is an oxidation? A 2SO2 + O2 → 2SO3 B NaOH + HCl → NaCl + H2O C CaCO3 → CaO + CO2 D NH3 + HCl → NH4Cl

1 marks

Answer: A

This question in 0652/11 Oct/Nov 2018

9 Which reaction is an oxidation? A 2SO2 + O2 → 2SO3 B NaOH + HCl → NaCl + H2O C CaCO3 → CaO + CO2 D NH3 + HCl → NH4Cl

1 marks

Answer: A

This question in 0652/12 Oct/Nov 2018

8 The equation for the reaction of magnesium with copper(II) oxide is shown. CuO + Mg → MgO + Cu Which statement is correct? A Copper(II) oxide is oxidised. B Copper(II) oxide is reduced. C Magnesium oxide is oxidised. D Magnesium oxide is reduced.

1 marks

Answer: B

This question in 0652/11 Oct/Nov 2019

8 The equation for the reaction of magnesium with copper(II) oxide is shown. CuO + Mg → MgO + Cu Which statement is correct? A Copper(II) oxide is oxidised. B Copper(II) oxide is reduced. C Magnesium oxide is oxidised. D Magnesium oxide is reduced.

1 marks

Answer: B

This question in 0652/12 Oct/Nov 2019

10 Word equations for two reactions are shown. zinc oxide + carbon  zinc + carbon monoxide iron + copper oxide  copper + iron oxide Which statement about the two reactions is correct? A Carbon and copper oxide have been oxidised. B Carbon and iron have been reduced. C Zinc oxide and copper oxide have been oxidised. D Zinc oxide and copper oxide have been reduced.

1 marks

Answer: D

This question in 0652/11 Oct/Nov 2020

11 Hydrogen is passed over a heated metal oxide as shown. metal oxide excess of hydrogen burning hydrogen heat The metal and steam are formed. What happens to the hydrogen and to the metal oxide? hydrogen metal oxide A oxidised oxidised B oxidised reduced C reduced oxidised D reduced reduced

1 marks

Answer: B

This question in 0652/11 Oct/Nov 2021

10 Lead is extracted from its ore using carbon monoxide. The equation is shown. PbO + CO → Pb + CO2 Which statement explains what happens to the lead atoms and carbon atoms in the reactants? A Lead and carbon are oxidised. B Lead and carbon are reduced. C Lead is oxidised and carbon is reduced. D Lead is reduced and carbon is oxidised.

1 marks

Answer: D

This question in 0652/11 Oct/Nov 2023

10 Lead is extracted from its ore using carbon monoxide. The equation is shown. PbO + CO → Pb + CO2 Which statement explains what happens to the lead atoms and carbon atoms in the reactants? A Lead and carbon are oxidised. B Lead and carbon are reduced. C Lead is oxidised and carbon is reduced. D Lead is reduced and carbon is oxidised.

1 marks

Answer: D

This question in 0652/12 Oct/Nov 2023

10 The word equation for the reaction between aluminium and iron(III) oxide is shown. aluminium + iron(III) oxide  iron + aluminium oxide Which statement about this reaction is correct? A Aluminium is oxidised as it gains oxygen. B Aluminium is reduced as it loses oxygen. C Iron is reduced as it gains oxygen. D Iron is oxidised as it loses oxygen.

1 marks

Answer: A

This question in 0652/11 Oct/Nov 2024