.Cut up paper burns much more rapidly than an equivalent single piece of wood because of its... different reactants
larger particle size
larger surface area
higher ignition temperature

different reactants

Explanation:

because if you think about it what's really thick and it takes a lot longer to burn a piece of paper is super fit material which can just tear real easily just by ripping it with your fingers so if you think about it how fast it burns it's not how big the molecules are because paper has smaller molecules than wood would so the paper burns faster in differently so it's probably the reactant it's made of

they are made of gases.

they have a spherical shape.

they make energy through fusion.