C2.3 the alkali metals Flashcards
1
Q
give three features for alkali metals
A
low density, soft, conduct electricity
2
Q
as you go down, reactivity what
A
increases
3
Q
why does as you go down, reactivity increases
A
because the electron is further from the nucleus and gets weaker meaning the electron is easily lost
4
Q
reacts quickly with what
A
water
5
Q
what can be seen when alkali metal reacts with water
A
fizzing, lilac flame, smoke
6
Q
alkali metals form what that dissolve in water
A
hydroxides
7
Q
is hydroxide and acid or alkali
A
alkali
8
Q
chemical equation for hydroxides with alkali metals
A
sodium + water –> sodium hydroxide + hydrogen
9
Q
what happens to the melting and boiling points as you go down
A
they decrease
