Group 1 - Alkali Metals

1. 1- Bigger atoms
2. 2- More reactive
3. 3 - Higher density
4. 4 - Lower melting point
5. 5 - Lowing boiling point

1. Have to be stored in oil and handled with forceps

1. Learn them! Also rubidium and caesium

1. Makes them very reactive and have similar properties

1. Keen to lose their one outer electron

1. So keen to lose the outer electron there's no way they'd consider sharing - covalent bonding out of the question

Annotations:

• 1 - When lithium, sodium or potassium are put in water, they react very vigorously 2 - Move around the surface fizzing furiously 3 - Produce hydrogen - potassium gets hot enough to ignite it. A lighted splint will indicate hydrogen by producing the 'squeaky pop' as H2 ignites 4 - They form a hydroxide in solution - ie. aqueous OH- ions 2Na(s)+2H(2)0(l) = 2NaOH(aq)+H(2)(g) 2K(s)+2H(2)0(l)= 2KOH(aq)+H(2)(g)