Chemistry Fundamentals Quiz
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Questions and Answers

Which statement correctly describes the atomic number?

  • A mole contains as many particles as there are protons in a carbon-12 atom. (correct)
  • The atomic number is equal to the molar mass (in molar mass units).
  • The number of protons in one mole of carbon-12 atoms is equal to Avogadro’s number.
  • The atomic number is equal to the atomic mass (in atomic mass units).

    • Which statement correctly describes the atomic mass unit?

  • The atomic mass unit is equal to 1/12 of the mass of a carbon-12 atom. (correct)
  • A mole contains as many particles as there are protons in a carbon-12 atom.
  • The atomic number is equal to the atomic mass (in atomic mass units).
  • The atomic number is equal to the molar mass (in molar mass units).

    • Which statement correctly describes the molar mass?

  • The number of protons in one mole of carbon-12 atoms is equal to Avogadro’s number.
  • A mole contains as many particles as there are protons in a carbon-12 atom.
  • The atomic number is equal to the molar mass (in molar mass units).
  • The atomic number is equal to the atomic mass (in atomic mass units). (correct)

    • Samuel's average speed is 20 km/h. How long does it take Samuel to cycle 10 km?

    <p>45 mins</p> Signup and view all the answers

    If Samuel applies a force of 40 N on his bicycle, what will be his average power if his average speed remains constant?

    <p>300 W</p> Signup and view all the answers

    If Samuel increases his average power to 300 W, how will this affect his average speed if the force remains constant?

    <p>The average speed will decrease</p> Signup and view all the answers

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