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Questions and Answers
Which of the following situations is an example of a chemical change?
Which of the following situations is an example of a chemical change?
- Leaving milk at room temperature during summers
- Food getting digested in our body
- Leaving an iron tawa/pan/nail exposed to humid atmosphere
- Grapes getting fermented (correct)
What happens when food is cooked?
What happens when food is cooked?
- Both a physical and chemical change occur
- A physical change occurs
- A chemical change occurs (correct)
- No change occurs
How do we know that a chemical reaction has taken place?
How do we know that a chemical reaction has taken place?
- By observing a change in color
- By observing the formation of a gas
- By observing the release or absorption of heat
- All of the above (correct)
What is the difference between a physical change and a chemical change?
What is the difference between a physical change and a chemical change?
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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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