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Oak National Academy
12 questions
If you want to make a solid react faster with a liquid, what should you do to the solid?
Why do smaller particles of a solid react faster than larger particles of the same solid?
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?
Why is it important to control variables in a rate of reaction experiment?
Which of the following should be kept constant in an experiment investigating the effect of surface area on reaction rate?
What will we have calculated if we divide the amount of product made by the time taken?
What will we calculate if we determine the gradient at a specific point on a graph of mass of product versus time.
On a graph of mass of gas produced against time, what does a steeper gradient indicate?
Why does the surface area of marble chips affect the rate of reaction but not the total mass of gas produced?
How is the mean rate of reaction calculated?
If 30 grams of gas are produced in 10 minutes, what is the mean rate of reaction?
When reacting excess marble chips with acid, how does the surface area of the chips affect the total mass of gas produced?
