Atomic Structures and Cell Membrane Quiz
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Questions and Answers

What is the smallest unit of matter that retains the properties of an element?

  • Compound
  • Cell
  • Molecule
  • Atom (correct)
  • How many naturally occurring elements are there?

  • 112
  • 92 (correct)
  • 25
  • 20
  • What is a compound?

  • The smallest unit of matter
  • A type of element
  • Consists of two or more different elements (correct)
  • A substance that cannot be broken down to other substances by chemical reactions
  • What percentage of the 92 elements are essential to life?

    <p>20-25%</p> Signup and view all the answers

    What is matter?

    <p>Anything that takes up space and has mass</p> Signup and view all the answers

    What is the definition of an element?

    <p>A substance that cannot be broken down to other substances by chemical reactions</p> Signup and view all the answers

    How many naturally occurring elements are there?

    <p>92</p> Signup and view all the answers

    What is the smallest unit of matter that retains the properties of an element?

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

    What is a compound?

    <p>A substance that consists of two or more different elements</p> Signup and view all the answers

    What percentage of the 92 elements are essential to life?

    <p>20-25%</p> Signup and view all the answers

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