Alkali metals

• what happens to the reactivity of the alkali

  metals as you go down the group?

  It increases
• Why does the reactivity of the Alkali metals increase?

  The number of electrons increases. They are further away

  from the nucleus. There is less pull on the outer electrons

  so the atom is more likely to loose an electron.
• Complete the word and symbol equation for sodium

  reacting with water:

  sodium + water -> sodium hydroxide + hydrogen

  2Na + 2H2O -> 2NaOH + H2