Group 1 - Alkalis Flashcards
What group is it? ( alkalis )
Group 1 / first column
G1 - How many electrons in their outer shell
1, they always lose 1 electron
G1 - What ions do they become
+1 ions
G1 - List some properties of the alkali metals
- low density
- soft
- shiny when recently cut
- react quickly with oxygen
- dull color
- very reactive
G1 - How does the reactivity increase in the group?
As it goes down the group
G1 - why does it get more reactive going down they group?
Distance - further away from nucleus, easier to remove it ( attracted less strongly )
Shielding
G1 - observation of the metal with oxygen at room temp
Grey / dull white
G1 - observation when heated ( oxygen )
Bright light
White smoke
Burn vigorously
G1 - what do they form in water
Colorless solutions
G1 - reaction with chlorine
White solid farmed
Salt formed
Dissolve in water ( colorless solutions )
G1 - observation with water
Very very vigorous Fizzing Metal floats Moves around the surface Metal eventually dissolves
Can Burst into flame