Atomic Theory of Matter
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Questions and Answers

According to Dalton's atomic theory, which of the following is NOT true?

  • All atoms of an element are identical.
  • Atoms are the building blocks of matter.
  • Elements are composed of atoms.
  • In chemical reactions atoms are not changed into different types of atoms. (correct)

    • Who proposed the atomic theory with the postulate that compounds are formed when atoms of elements combine?

  • Democritus
  • Neither Democritus nor John Dalton
  • Both Democritus and John Dalton
  • John Dalton (correct)

    • According to Democritus, what can matter be divided into?

  • Atoms
  • Elements
  • Indivisible atomos (correct)
  • Compounds

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