Fundamental ideas in Chemistry

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  • Created by: Busayoxo
  • Created on: 21-12-15 12:43

1. What is the mass number?

  • The number of protons, neutrons and electrons
  • The number of protons+electrons
  • The number of protons+neutrons
  • The number of electrons+neutrons
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2. What is the relative charge of an Electron?

  • -1
  • 0
  • -3
  • +2

3. Non-metal compounds form molecules held together by

  • Metallic bonds
  • Covalent bonds
  • Ionic bonds
  • Simple ionic bonds

4. What compounds are made of metal and non-metal ions

  • Ionic compounds
  • Giant covalent compounds
  • Covalent compounds
  • Metallic compounds

5. Why are the elements in group 0 unreactive?

  • They have no electrons
  • They have full outer electron shells
  • They have the same amount of protons
  • They have neutrons and protons

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