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6. What is an alkali metal?

  • Metals that are non-reactive and have 2 outer electrons in their shell
  • Metals that are soft, reactive and have 1 outer electron in their shell
  • Metals that are non-reactive and have no outer electrons in their shell

7. What is the atomic number of an atom?

  • The amount of electrons in an atom
  • The amount of protons in an atom
  • The amount of neutrons in an atom

8. What is an isotope?

  • An element
  • Different forms of the same element that have the same number of protons but a different number of neutrons
  • Different forms of the same element that have the same number of neutrons but a different number of protons

9. What is the equation for relative atomic mass (Ar)?

  • Ar = atomic number - mass number
  • Ar = sum of (isotope abundance x isotope mass number) ÷ sum of abundance of all the isotopes
  • Ar = mass number + atomic number

10. What are Group 1 elements also known as?

  • Alkali metals
  • Halogens
  • Transition metals

11. What are Group 7 elements also known as?

  • Noble gases
  • Halogens
  • Alkali metals