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6. How big are atoms?

  • Tiny
  • Small
  • Medium sized
  • Massive

7. What does the nucleus contain?

  • Electrons and neutrons
  • Protons and neutrons
  • Protons and electrons
  • Electrons

8. Neutral atoms have...

  • A negative charge
  • A positive charge
  • No charge
  • A charge

9. Fill in the gaps...It's the number of - in an atom that determines what element it is.

  • Shells
  • Neutrons
  • Protons
  • Electrons

10. The nucleus has an overall...

  • None of the options
  • Positive charge
  • Neutral charge
  • Negative charge

11. In a neutral atom the number of protons always equals the number of...

  • The electrons
  • 26
  • The neutrons
  • 8

12. The majority of the mass of an atom is concentrated in the...

  • Nucleus
  • Electrons
  • Protons
  • Neutrons

13. Elements all have different properties from each other due to differences in their...

  • Atomic structure
  • Electron number
  • Atomic mass
  • Proton number

14. The number of neutrons isn't fixed but is usually the same as the number...

  • 2
  • Of protons
  • of electrons
  • 45