Exploring Chemical Reactions
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Questions and Answers

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?

  • 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?

  • 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?

    <p>To investigate the nature of chemical changes</p> Signup and view all the answers

    What happens when food is cooked?

    <p>A chemical change occurs</p> Signup and view all the answers

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