N5 Chemistry - Rates of Reaction
Quiz by Isabel McCluskey
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8 questions
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- Q1Which of the following changes will speed up a chemical reaction?Decreasing concentrationAdding a catalystIncreasing particle sizeDecreasing temperature30s
- Q2Which of the following changes will not speed up a chemical reaction?Increasing particle sizeIncreasing concentrationIncreasing temperatureAdding a catalyst30s
- Q3What would be the average rate of reaction, in cm3/s, over the first 20s of a chemical reaction if 10cm3 of gas is released in this time?2200.51030s
- Q4Magnesium was added to hydrochloric acid, and 20cm3 of hydrogen had been released after 10s. After 50s, a total of 80cm3 of hydrogen had been released. What was the average rate of reaction, in cm3/s, between 10 and 50s?0.50.661.51.430s
- Q5The graph shows the change on volume of a gas released in a chemical reaction over a period of time. What was the time, in seconds, at which the reacton stopped? (Image from https://www.sqa.org.uk/files_ccc/ChemistrySQPRN5.pdf)100651209030s
- Q6The graph shows the change on volume of a gas released in a chemical reaction over a period of time. What was the total volume of gas released in the reaction? (Image from https://www.sqa.org.uk/files_ccc/ChemistrySQPRN5.pdf)120901006530s
- Q7The graph shows the change on volume of a gas released in a chemical reaction over a period of time. What was the average rate of reaction, in cm3/s, over the first 40s? (Image from https://www.sqa.org.uk/files_ccc/ChemistrySQPRN5.pdf)500.81.254030s
- Q8The graph shows the change on volume of a gas released in a chemical reaction over a period of time. What was the average rate of reaction, in cm3/s, between 40 and 60s? (Image from https://www.sqa.org.uk/files_ccc/ChemistrySQPRN5.pdf)1.2510.5230s