Chemistry Concepts and Radioactivity
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Questions and Answers

What does L Coe state about energy in an isolated system?

  • Energy can be created or destroyed.
  • Energy can be accumulated indefinitely.
  • Energy can only be transformed.
  • The total amount of energy remains constant. (correct)

    • Which type of radioactivity is blocked by paper?

  • Alpha radiation (correct)
  • Gamma radiation
  • Beta radiation
  • Neutron radiation

    • According to Lmp, what must be true about the masses of two elements that combine to form a compound?

  • They can vary widely without affecting the compound.
  • They must conform to a fixed ratio. (correct)
  • They can only combine in equal mass amounts.
  • They must stay constant regardless of the compound formed.

    • What do all samples of compounds have in common according to LCC?

    <p>They contain the same elements combined in fixed proportions by mass.</p> Signup and view all the answers

    Which type of radiation has no charge?

    <p>Gamma radiation</p> Signup and view all the answers

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