Experimental design — Paper 1 · IGCSE Science - Combined 0653

23 Marble chips react with dilute hydrochloric acid as shown. CaCO3(s) + 2HCl (aq) → CaCl 2(aq) + H2O(l) + CO2(g) The progress of this reaction was followed using the apparatus shown. cotton wool balance Which graph shows the results of this experiment? A B balance balance reading reading 0 0 0 time 0 time C D balance balance reading reading 0 0 0 time 0 time

1 marks

Answer: B

This question in 0653/11 May/June 2009

20 Part of the apparatus used to electrolyse aqueous copper(II) chloride is shown. A Which piece of apparatus is not required in this experiment? A B C D beaker bulb electrodes electrolyte

1 marks

Answer: B

This question in 0653/12 May/June 2010

21 Marble chips react with dilute hydrochloric acid producing carbon dioxide. The progress of this reaction is followed using the apparatus shown. cotton wool marble chips balance Which graph shows the results of this experiment? A B mass mass 0 0 0 time 0 time C D mass mass 0 0 0 time 0 time

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2016

2 A student investigates the effect of temperature on the digestion of starch by an enzyme. The student mixes an enzyme solution with a starch solution. He removes samples of the mixture every two minutes and tests with iodine solution. The experiment is repeated at different temperatures, A, B, C and D. Which row shows the results for the temperature in which starch is digested most quickly? two minutes four minutes six minutes eight minutes A blue-black blue-black blue-black blue-black B blue-black blue-black brown brown C blue-black brown brown brown D brown brown brown brown

1 marks

Answer: D

This question in 0653/12 May/June 2018

2 A student investigates the effect of temperature on the digestion of starch by an enzyme. The student mixes an enzyme solution with a starch solution. He removes samples of the mixture every two minutes and tests with iodine solution. The experiment is repeated at different temperatures, A, B, C and D. Which row shows the results for the temperature in which starch is digested most quickly? two minutes four minutes six minutes eight minutes A blue-black blue-black blue-black blue-black B blue-black blue-black brown brown C blue-black brown brown brown D brown brown brown brown

1 marks

Answer: D

This question in 0653/13 May/June 2018

19 Which diagram shows apparatus used to investigate the rate of a reaction in which a gas is given off? A B gas water C D gas water water

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2018

15 The apparatus used for chromatography is shown. beaker chromatography paper sample pencil line spots solvent Which statement about the method used for chromatography is not correct? A The beaker is swirled to help the solvent to rise. B The chromatography paper is placed in the beaker after the solvent has been added. C The chromatography paper is removed before the solvent reaches the top of the paper. D The sample spots are placed on the pencil line above the level of the solvent.

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2018

15 Which piece of equipment can be used to measure exactly 21.6 cm3 of dilute sulfuric acid? A B C D beaker burette measuring pipette cylinder

1 marks

Answer: B

This question in 0653/12 Feb/March 2019

19 When an excess of zinc is added to dilute hydrochloric acid, a gas is released. Which pieces of apparatus are needed to investigate the rate of this reaction? 1 balance 2 gas syringe 3 stop watch 4 thermometer A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: C

This question in 0653/11 May/June 2019

4 The flow diagram shows the stages in testing a green leaf for starch. 1, 2, 3 and 4 are all liquids. 4 iodine solution white tile hot water 1 2 3 boiling water boiling alcohol to warm water to kill the leaf remove the chlorophyll to wash the leaf What are the colours of liquids 2 and 4 for a leaf that contains starch? 2 4 A green blue / black B colourless brown C colourless blue / black D green brown

1 marks

Answer: A

This question in 0653/11 May/June 2021

15 Which piece of apparatus is used to measure exactly 23.6 cm3 of dilute hydrochloric acid? A beaker B burette C conical flask D measuring cylinder

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2021

17 Which apparatus is used to determine the rate of reaction when magnesium reacts with dilute hydrochloric acid? A B C D

1 marks

Answer: A

This question in 0653/12 Feb/March 2023

20 Zinc reacts with dilute sulfuric acid to form zinc sulfate and hydrogen. Which apparatus is suitable for investigating the rate of this reaction? A B C D

1 marks

Answer: B

This question in 0653/13 May/June 2023

18 A gas is given off during a reaction. The volume of the gas is measured as it is collected. Some of the apparatus used is shown. X reaction mixture Which piece of apparatus is filled with water and placed at position X to collect and measure the gas? A beaker B conical flask C measuring cylinder D pipette

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2023

18 The apparatus used to measure the volume of gas produced in the reaction between magnesium and dilute hydrochloric acid is shown. Which other piece of apparatus is required to determine the rate of gas production in this experiment? A balance B measuring cylinder C pipette D stop-watch

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2024

20 The steps needed to make pure, dry magnesium sulfate crystals from magnesium oxide and dilute sulfuric acid are listed. 1 filter 2 leave to cool 3 add excess magnesium oxide to sulfuric acid and heat 4 dry 5 filter and wash 6 heat to evaporate some of the water In which order are these steps carried out? A 3  1  2  5  6  4 B 3  1  6  2  5  4 C 3  2  1  6  4  5 D 3  5  2  6  1  4

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2024

25 Which piece of apparatus is used to measure exactly 20.6 cm3 of water? A measuring cylinder B burette C graduated beaker D syringe

1 marks

Answer: B

This question in 0653/11 May/June 2025