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WorksheetsStogs GCSE Interleaving Rates M
Total questions: 15
Worksheet time: 8mins
How can rate of reaction be measured in reactions?
Measure mass lost when gas produced.
Measure volume of gas produced.
Measure colour change or formation of a solid.
Measure time taken for liquid to disappear.
Look at the graph. At what time does the reaction finish?
4 minutes
5 minutes
6 minutes
7 minutes
Look at the graph. Use the tangent to the curve to work out the rate of reaction.
0.5
1
1.5
2
Look at the graph. What does the tangent to the curve show?
Time taken
Concentration
Rate
Mass
Increasing concentration of a reactant...
... decreases rate
... increases rate
Increasing temperature leads to rate...
... increasing
... decreasing
Increasing the pressure of a reaction in which reactants are gaseous will lead to the rate of reaction...
... decreasing
... increasing
A student investigates the rate of reaction between zinc and excess dilute hydrochloric acid.
The table shows his results. What is the rate of the reaction?
8.2
8.4
21
84
The decomposition of hydrogen peroxide is catalysed by adding a small amount of manganese (IV) oxide. Which of the graphs below shows the mass of the catalyst as the reaction takes place?
A
B
C
D
A student carries out an experiment to measure accurately the temperature changes when different metals are added to iron(II) sulfate solution. State a suitable container to measure the iron(II) sulfate solution in this experiment.
Beaker
Measuring cylinder
Spatula
Mass balance
What would the rate be if 10g of product are produced in 20 seconds?
5 g/s
0.5 g/s
1.5 g/s
2 g/s
What effect will using a gas syringe have on the investigation results?
Gives a better average.
More detailed.
More precise.
More accurate.
What would the rate of reaction be if 40g of solid were produced in 20 seconds?
5 g/s
0.5 g/s
1.5 g/s
2 g/s
Which of the following surface areas would give the greatest rate of reaction?
54cm2
25cm2
115cm2
1000cm2
Catalysts do not need to be replaced frequently because...
...they are very expensive.
...they do not do anything.
...they are not used up in a reaction.
...they are dangerous.
