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Questions and Answers
Which of the following is an example of a chemical change?
Which of the following is an example of a chemical change?
- Food cooked (correct)
- Milk left at room temperature during summers
- An iron tawa/pan/nail left exposed to humid atmosphere
- Food digested in our body
What is the main difference between a physical change and a chemical change?
What is the main difference between a physical change and a chemical change?
- Physical changes only involve a change in appearance, while chemical changes involve a change in composition (correct)
- Physical changes involve a change in the composition of the substance, while chemical changes do not
- Physical changes are reversible, while chemical changes are irreversible
- Physical changes occur only at high temperatures, while chemical changes occur at any temperature
What happens when grapes get fermented?
What happens when grapes get fermented?
- Chemical change (correct)
- Depends on the temperature
- No change
- Physical change
What is the purpose of Activity 1.1 mentioned in the text?
What is the purpose of Activity 1.1 mentioned in the text?
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What is the main difference between a chemical reaction and a physical change?
What is the main difference between a chemical reaction and a physical change?
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