Match these words with their definitions.

• Объекты 1
  • electron
  • universe
  • helium
  • subatomic
  • attracted
  • molecule
  • quantum mechanics
  • carbon
  • neutron
  • proton
• Объекты 2
  • part of an atom that has a negative charge
  • the whole cosmos
  • a chemical element that is lighter than air
  • smaller than an atom
  • pulled together
  • two or more atoms
  • a theory developed by physicists to explain the atom
  • a chemical element
  • part of an atom which has no charge
  • part of an atom which has a positive charge