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Group 1/ Alkali Metal - Coggle Diagram

- - - - Float on water because it is less dense
    - - Float on water because it is less dense
    - - Float on water because it is less dense
  - - - Hydrogen is evolve which causes the sodium to move around the surface of water. White trail of sodium hydroxide produced which dissolve in the water producing a highly alkaline solution
    - - React like sodium except that the reaction is faster and enough heat produce
    - - Gently fizzing and giving off hydrogen. gradually reacts and disappear, forming lithium hydroxide
  - - - Has low melting point and a lot of heat produce in the reaction
    - - Melt into a shiny balls that dashes around the surface
    - - High melting point and heat isn't produce so quickly, so the lithium doesn't melt
- - - - As the metals goes down the group, it is easier to lose electrons and form cations, these form when metal react
      - It is easier to lose electrons due to the increase in electron shells and therefore there is more electron shielding and easier to lose electrons due to the decrease in attraction between the positively charged nucleus and the negatively charged outer shell electrons
      - Reactivity increases down the group