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ScotlandChemistryQuick questions

Area 1: Chemical Changes and Structure

Quick questions on Rates of reaction: collisions, factors and average rate - SQA National 5 Chemistry

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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A reaction produces 50 cm350 \text{ cm}^3 of gas in 25 s25 \text{ s}. Calculate the average rate. [1 mark]
What is q2?
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Explain, using collisions, why increasing the concentration of an acid increases the rate of its reaction with a metal. [2 marks]
What is q3?
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State two pieces of evidence that show a catalyst has not been used up. [2 marks]

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