Reactions Group 2 Elements & Oxygen - Redox Flashcards
1
Q
How does group 2 elements react with oxygen
A
Group 2 metals react vigorously with oxygen to produce an oxide with ionic bonding
2
Q
Group 2 elements react with oxygen where
A
done in air or an atmosphere of pure oxygen.
3
Q
General equation for metals with oxygen
A
Metal + oxygen ➡️ metal oxide
4
Q
Example with chlorine reacting with oxygen & change in oxidation number
A
2Ca + O2 ➡️ 2CaO
0. 0. +2 -2
Ca - oxidised - 0 to +2
O - reduced - 0 to -2
5
Q
What would you see in group 2 reacts with oxygen
A
White powder & bright light when it burns
Magnesium burns with a white flame
calcium with a brick-red flame
strontium with a crimson flame
barium with an apple-green flame.
