Snapquiz - Rate of Reaction

This is the Snapquiz on Rate of Reaction. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. 270g of calcium carbonate is heated to 900°C for 30 minutes until it has completely thermally decomposed. What is the rate of reaction?

9g per minute.
0.033 minutes per °C.
0.3g per °C.
0.11 minutes per gram.


Question 2. Which is the lowest rate of reaction?

20g per minute.
0.3g per second.
1.08kg per hour.
1000g per hour


Question 3. When calculating the rate of change in chemistry, which variable will you usually be dividing by?

Mass.
Volume.
Concentration.
Time.


Question 4. 256g of zinc carbonate is added to a 0.1 molar solution of nitric acid. After 8 minutes it is still reacting and it has produced 12cm3 of carbon dioxide gas. What is its rate of reaction?

21.33g per cm3.
32g per minute.
1.5cm3 per minute.
120cm3 per mole.


Question 5. When calculating the rate of change in chemistry, which variable could you be observing change?

Amount of reactant used up.
Amount of fizzing.
Colour.
Time taken.


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