Chemistry: Elements and Compounds
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Questions and Answers

What is an element?

  • A substance that can be separated into simpler substances by chemical means
  • A substance that cannot be separated into simpler substances by chemical means (correct)
  • A substance that has a symbol with more than two letters
  • A substance that is created by scientists via nuclear processes

    • How many elements have been positively identified to date?

  • 118 (correct)
  • 83
  • 101
  • 96

    • Why do chemists use symbols of one or two letters to represent elements?

  • To make the learning process harder
  • For decorative purposes
  • For convenience (correct)
  • To confuse students

    • Which of the following is a correct example of an element's symbol?

    <p>$Co$</p> Signup and view all the answers

    Where can a complete list of the elements and their symbols be found?

    <p>Inside the front cover of the book</p> Signup and view all the answers

    How are some element symbols derived, according to the text?

    <p>From their Latin names</p> Signup and view all the answers

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