group 1, group 7 and group 0

• describe group 1 elements

  alkali metals with one outer electron
• describe reactivity of group 1

  increasing reactivity down group 1
• explain decreasing reactivity down group 1

  1. bigger atom
  2. increased distance of nucleus and outer electron
  3. weaker attraction between nucleus and outer electron
  4. outer electron more easily lost
• describe melting and boiling points of group 1

  decreasing melting and boiling points down group 1
• describe reaction of alkali and oxygen

  produce different metal oxide
• describe reaction of group 1 and water

  produce metal hydroxide and hydrogen gas in vigorous reaction
• describe reaction of group 1 and chlorine

  produce metal chloride salts in vigorous reaction
• describe group 7

  halogens with seven outer electrons
• describe fluorine

  yellow gas
• describe chlorine

  green gas
• describe bromine

  red / brown liquid
• describe iodine

  dark grey solid or purple gas
• describe reactivity of group 7

  decreasing reactivity down group 7
• explain decreasing reactivity down group 7

  1. bigger atom
  2. increased distance between nucleus and outer electrons
  3. weaker attraction between nucleus and outer electrons
  4. extra electron more harder gained
• describe melting and boiling points of group 7

  increasing melting and boiling points down group 7
• describe reaction of group 7 and non metals

  produce simple molecular structures through covalent bonding of shared electrons
• describe reaction between group 7 and metals

  produced ionic structures through ionic bonding of transferred electrons
• describe group 0

  noble gases with full outer shell
• describe reactivity of group 0

  unreactive
• describe boiling points of group 0

  increasing boiling points down group 0
• explain increasing boiling points down group 0

  1. bigger atom
  2. increase number of electrons, protons and neutrons
  3. stronger intermolecular forces
  4. more energy required to overcome