going down group 1

• become softer
• become more reactive
• melting point decrease
• boiling point decrease
• density increase
• alkali metal + water _ metal hydroxide + hydrogen gas

  2M +2H20 _ 2MOH +H2
• Alkali metal +Oxygen

  Metal oxide
• Alkali Metal + Chlorine

  Metal chloride
• as you go down group 1 elements will have more electron shells,its outer shell will be further away from the nucleus so there is weaker attraction between the nucleus and the outer shell electrons therefore its easier to lose an electron