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Surface area and rate: analysis

Quiz by Oak National Academy: GCSE Chemistry AQA Foundation

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Q 1/6
Score 0
If you want to make a solid react faster with a liquid, what should you do to the solid?
29
cool the solid
dilute the liquid
compress the solid
break the solid into smaller pieces

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6 questions

Show answers

Q1
If you want to make a solid react faster with a liquid, what should you do to the solid?
cool the solid
dilute the liquid
compress the solid
break the solid into smaller pieces
30s
Q2
Why do smaller particles of a solid react faster than larger particles of the same solid?
they have a lower mass
they have a higher density
they have a smaller volume
they have a larger surface area
30s
Q3
Which has a greater surface area to volume ratio: 5g of large calcium carbonate chips, 5g of small calcium carbonate chips or 5g of powdered calcium carbonate?
5g of small calcium carbonate chips
5g of large calcium carbonate chips
they all have the same surface area
5g of powdered calcium carbonate
30s
Q4
Why is it important to control variables in a rate of reaction experiment?
to ensure the experimental results are reliable
to increase the reaction rate
to decrease the reaction rate
to change the outcome of the experiment
30s
Q5
Which of the following should be kept constant in an experiment investigating the effect of surface area on reaction rate?
the surface area of a solid reactant
the time taken for the reaction to reach completion
the volume of gas produced
the concentration of a reacting solution
30s
Q6
What will we have calculated if we divide the amount of product made by the time taken?
rate of reaction
temperature of the reaction mixture
concentration of a reacting solid
mass of reacting solid needed for the reaction to reach completion
mass of catalyst added
30s

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