alkali Metals Flashcards
(6 cards)
1
Q
What’s unusual about these metals?
A
Float on water, can cut with a knife, stored in oil
2
Q
What happens when the cut metal is exposed to air?
A
Oxidise a layer of oxide on the metal (goes dull)
3
Q
Group 1 flame test
A
Lithium = red
Sodium = yellow/ orange
Potassium = lilac
Barium = apple green
Calcium = brick red
4
Q
What’s happens down the group?
A
Boiling point decrease and density increases
5
Q
A
6
Q
How to find electronic structures?
A
Take bottom number of element = cl17 = 2,8,7
