Atomic Structure and Chemical Bonds Quiz for Class 9

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Questions and Answers

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

  • Atom (correct)
  • Molecule
  • Proton
  • Compound

What is the smallest particle of a compound that can exist independently and still retain the properties of that compound?

  • Isotope
  • Atom
  • Molecule (correct)
  • Element

What is a group of two or more atoms held together by chemical bonds?

  • Element
  • Molecule (correct)
  • Isotope
  • Ion

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Study Notes

Atomic Structure

  • The smallest unit of an element that retains its chemical properties is an atom.

Compounds

  • The smallest particle of a compound that can exist independently and still retain the properties of that compound is a molecule.

Chemical Bonds

  • A group of two or more atoms held together by chemical bonds is a molecule.

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