Atomic Knowledge
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Questions and Answers

Which of the following statements about atoms is true?

  • There are only 91 different elements found in nature
  • Atoms can be broken down into simpler substances
  • Atoms are the smallest unit of matter (correct)
  • Atoms are composed of multiple types of elements

    • What is an element?

  • A substance that can be broken down into simpler substances
  • A substance composed of atoms and molecules
  • A substance composed of multiple types of atoms
  • A substance composed of only one type of atoms (correct)

    • How many elements are found in nature?

  • 20
  • Unknown
  • 1008
  • 91 (correct)

    • How many elements are synthetically made by scientists?

    <p>20 (A)</p> Signup and view all the answers

    Do all atoms exist as elements?

    <p>No, some atoms do not exist (D)</p> Signup and view all the answers

    Which theory proposed that all matter is made up of atoms?

    <p>Dalton’s Atomic Theory (A)</p> Signup and view all the answers

    What is the smallest identifiable unit of an element?

    <p>Atom (A)</p> Signup and view all the answers

    Which subatomic particle has a positive charge?

    <p>Proton (D)</p> Signup and view all the answers

    What is the average mass of an element's atoms called?

    <p>Atomic Mass (C)</p> Signup and view all the answers

    What is the number of protons in an atom called?

    <p>Atomic Number (B)</p> Signup and view all the answers

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