Because you don’t have to walk and riding a bike can make you go faster and it lets you get to where you need to go much more faster
An electric current can be carried through a metal by the free flow of the shared electrons.
A firework exploding is a chemical change as soon as you light the fuse the combustion reacts with the gunpowder.
I hope this helps, good luck!!!!
<em>Phosphoric acid is an acid used in fertilizers and soaps.</em>
<em> Hope this helps:)</em>
