When will single, double, or even triple bonds form in a compound?

Double and triple covalent bonds are stronger than single covalent bonds ... Double and triple bonds offer added stability to compounds, and restrict any rotation around the bond axis.

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .