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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?
- Food getting digested in our body
- Milk left at room temperature during summers
- An iron tawa/pan/nail left exposed to humid atmosphere
- Grapes getting fermented (correct)
What is the nature of a chemical change?
What is the nature of a chemical change?
- It involves a change in the state of matter of the initial substance
- It involves a change in the identity of the initial substance (correct)
- It involves a change in the physical properties of the initial substance
- It involves a change in the temperature of the initial substance
How do we know that a chemical reaction has taken place?
How do we know that a chemical reaction has taken place?
- Through changes in temperature
- Through changes in color
- Through the formation of a new substance (correct)
- Through changes in physical properties
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 happens when food is cooked?
What happens when food is cooked?
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