Air in an Empty Bottle Experiment
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Questions and Answers

What is the main aim of the activity described in the text?

  • To demonstrate how to fill a bottle with water
  • To explain the process of photosynthesis
  • To prove that air occupies space (correct)
  • To show the presence of water in an empty bottle

    • Why does water rush into the empty bottle when it is tilted according to the text?

  • Because the water is attracted to the bottle's shape
  • Because the bottle is submerged in water
  • Because the bottle is made of a special material that attracts water
  • Because air rushes out from the opening of the bottle, creating a vacuum (correct)

    • What percentage of oxygen does air contain according to the text?

  • Nearly 100%
  • About 78%
  • Around 50%
  • Approximately 21% (correct)

    • Why does nitrogen not support burning unlike oxygen according to the text?

    <p>Because nitrogen is not a reactive gas</p> Signup and view all the answers

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