Both are oxidation reactions. Burning is just a lot faster than rusting.
Heat can be absorbed or produced
The answers here is B) Before, the substance was a gas, later it was a liquid.
Gas particles move freely and away from each other. However, liquid particles move around each other.
Hope this helps! :)(
-173.15
-0.15
-267.15
416.15
846.15
assuming k is kelvins and c is celsius
