Cards (16)

    • Group 1
      • Soft
      • Low density
      • Low melting point
    • Group 1 is also known as the alkali metals
    • group 1 gets more reactive as you move down the group as it is easier to lose electrons and there is less pull from the nucleus to keep them there.
    • All have 1 electron in the outer shell.
    • Alkali metals are very unstable and react vigorously even with water.
    • Melting points and boiling points as you go down the group
    • in order to react group 1 metals only have to lose 1 electron.
    • Group 1 metals form +1 ions.
    • Ionic compounds are generally white solids and dissolve in water to form colourless solutions,
    • When a group 1 metal donates an electron to a group 7 metal they form an ionic compound. They have opposite charges and are attracted to each other by electrostatic forces which we call an ionic bond.
    • When an alkali metal reacts with water it is vigorous and forms a metal hydroxide + hydrogen gas.
    • When reacted with chlorine they form a metal chloride
    • When alkali metals react with oxygen they form metal oxides
    • Lithium + Oxygen ---> Lithium oxide (Li2O)
    • Sodium + Oxygen ---> Sodium oxide (Na2O) OR Sodium peroxide (Na2O2)
    • Potassium + Oxygen ---> Potassium Peroxide (K2O2) OR Potassium Super Oxide (KO2)
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