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Worksheet: The Structure of the Atom

Q1:

Subatomic particles can have a charge.

What is the charge of a proton?

What is the charge of a neutron?

What is the charge of an electron?

Q2:

Which of the following has the smallest mass?

  • AA neutron
  • BA proton
  • CA nucleus
  • DAn electron
  • EAn atom

Q3:

Opposite charges attract each other via the electromagnetic force. Which of the following pairs of subatomic particles attract each other in this way?

  • AElectrons and electrons
  • BProtons and protons
  • CProtons and neutrons
  • DProtons and electrons
  • EElectrons and neutrons

Q4:

Like charges repel each other via the electromagnetic force. Which of the following pairs of subatomic particles repel each other in this way?

  • AProtons and neutrons
  • BNeutrons and electrons
  • CNeutrons and neutrons
  • DProtons and protons
  • EProtons and electrons

Q5:

What is the mass of an electron as a fraction of the mass of a proton or neutron?

  • A 1 4 0 8
  • B 1 9
  • C 1 1 9 5
  • D 1 1 8 3 6
  • E 1 7 2 9 4