Revision notes topic questions past papers

A  Acid base neutralisation

B  Metal displacement reactions

C  Boiling ethanol

D  Combustion of magnesium

Physical and chemical changes are different processes. Which of the following 

row correctly identifies characteristics of each one?

chemical change

physical change

A

no new substance formed

change of state

B

no new substance formed

involves electron transfer

C

new substance formed

involves electron transfer

D

new substance formed

change of state

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2 ORGANISATION OF THE ORGANISM

YOUR NOTES

7 CHEMICAL REACTIONS

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CIE IGCSE Chemistry Revision Notes

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REVISION NOTES      TOPIC QUESTIONS      PAST PAPERS

EXAM QUESTIONS

QUESTION 3

?

A student was investigating the rate of reaction between a solid base and a 

solution of sulfuric acid. Two experiments were performed, S and T, in which 

the mass of the reaction flask was recorded as shown in the graph.

Which of the following changes could explain the difference in results between 

S and T?