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Questions and Answers
Which of the following is a characteristic of a chemical reaction?
Which of the following is a characteristic of a chemical reaction?
- Change in shape
- Change in temperature
- Change in color (correct)
- Change in size
What is the purpose of a catalyst in a chemical reaction?
What is the purpose of a catalyst in a chemical reaction?
- To increase the activation energy
- To change the products of the reaction
- To increase the rate of reaction (correct)
- To decrease the rate of reaction
Which of the following statements best describes an exothermic reaction?
Which of the following statements best describes an exothermic reaction?
- It absorbs heat from the surroundings
- It releases heat to the surroundings (correct)
- It releases light to the surroundings
- It does not involve any change in heat
