Chemical Reactions in Daily Life
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Questions and Answers

Which of the following is an example of a chemical change?

  • Milk left at room temperature during summers
  • Grapes getting fermented (correct)
  • Food getting digested in our body
  • An iron tawa/pan/nail left exposed to humid atmosphere

    • What happens when food is cooked?

  • The food becomes inedible
  • A physical change occurs
  • A chemical change occurs (correct)
  • The nature and identity of the food remain the same

    • What is a chemical reaction?

  • A change in the chemical properties of a substance (correct)
  • A change in the physical properties of a substance
  • A change in both the physical and chemical properties of a substance
  • A change in the state of matter

    • How do we know that a chemical reaction has taken place?

    <p>By observing a change in the chemical properties of a substance</p> Signup and view all the answers

    What is the difference between a physical change and a chemical change?

    <p>A physical change only involves a change in the physical properties of a substance, while a chemical change involves a change in the chemical properties of a substance</p> Signup and view all the answers

    Which substance would you suggest as a remedy for acidity after overeating?

    <p>Lemon juice</p> Signup and view all the answers

    Which taste is associated with acids?

    <p>Sour</p> Signup and view all the answers

    Which taste is associated with bases?

    <p>Bitter</p> Signup and view all the answers

    What happens to the color of blue litmus paper when it comes in contact with an acid?

    <p>It turns red</p> Signup and view all the answers

    What happens to the color of red litmus paper when it comes in contact with a base?

    <p>It turns blue</p> Signup and view all the answers

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