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Chemical Reactions Quiz

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Questions and Answers

Which of the following is an example of a chemical change?

Dissolving salt in water

Boiling of water

Rusting of iron (correct)

Melting of ice

What is the role of a catalyst in a chemical reaction?

Stops the reaction from occurring

Changes the nature of the reactants

Decreases the rate of reaction

Speeds up the reaction without being used up (correct)

Which statement best describes an exothermic reaction?

It absorbs heat from the surroundings

It always results in a decrease in temperature

It releases heat to the surroundings (correct)

It has no effect on the temperature

Chemical Reactions Quiz

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Questions and Answers

Which of the following is an example of a chemical change?

What is the role of a catalyst in a chemical reaction?

Which statement best describes an exothermic reaction?

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