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11 - Rates of Reaction

Question 1 of 210 correct · 0 wrong

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✅EvaluateQuestion 1 of 21

What does the rate of a chemical reaction measure?

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✅EvaluateQuestion 2 of 21

Which factor does NOT affect the rate of reaction?

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✅EvaluateQuestion 3 of 21

The rate of a reaction is usually measured in:

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✅EvaluateQuestion 4 of 21

Which of the following increases with temperature?

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✅EvaluateQuestion 5 of 21

The activation energy of a reaction is the:

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✅EvaluateQuestion 6 of 21

Which apparatus can be used to measure gas volume during a reaction?

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✅EvaluateQuestion 7 of 21

A catalyst works by:

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✅EvaluateQuestion 8 of 21

Which factor increases the rate of a reaction between magnesium and hydrochloric acid?

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✅EvaluateQuestion 9 of 21

When sugar dissolves faster in hot tea, the reason is:

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✅EvaluateQuestion 10 of 21

Which change will speed up the reaction between a solid and a gas?

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✅EvaluateQuestion 11 of 21

In a catalytic converter, the catalyst helps by:

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✅EvaluateQuestion 12 of 21

Why do small marble chips react faster with hydrochloric acid than large ones?

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✅EvaluateQuestion 13 of 21

What happens to particle energy when temperature increases?

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✅EvaluateQuestion 14 of 21

The collision theory explains that:

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✅EvaluateQuestion 15 of 21

The graph of a fast reaction compared to a slow one will show:

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✅EvaluateQuestion 16 of 21

During the decomposition of hydrogen peroxide, the reaction speeds up when manganese dioxide is added because:

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✅EvaluateQuestion 17 of 21

Which of the following graphs best represents the effect of a catalyst?

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✅EvaluateQuestion 18 of 21

If 50 cm³ of gas is produced in 25 seconds, the average rate is:

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✅EvaluateQuestion 19 of 21

Which factor affects the rate of a gaseous reaction but not a solid-liquid reaction?

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✅EvaluateQuestion 20 of 21

In an industrial reaction, doubling the temperature increases the rate four times. This shows:

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✅EvaluateQuestion 21 of 21

Which explanation best describes why food is refrigerated?

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✅EvaluateQuestion 1 of 21

What does the rate of a chemical reaction measure?

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