Practice Introduction (2.1) - Chemical Changes and Reactions

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8 questions

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6 sample questions

Question 1.
What is a chemical change?
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Think about transformations.
Question 2.
Give an example of a chemical change.
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Can you think of a change that cannot be reversed?
3Question 3.
What occurs during a chemical change?
- Physical state alteration
- Formation of new substances
- Temporary change
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Think about the result of the change.
4Question 4.
Chemical changes can be reversed. True or False?
- True
- False
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Recall examples discussed in class.
Question 5.
Consider photosynthesis and combustion. Discuss how both involve energy changes but in different directions.
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Think about how energy flows in both processes.
Question 6.
Explain how understanding chemical changes can influence environmental policies.
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Consider how reactions impact the environment.

4 more questions in this section. Enroll free to practise them all.