Answer:
Since they are attracted to whatever protons are near it
Explanation:
let's take an example of water and static electricity
if you rub a comb on a balloon for about 20+ seconds(best).
then the comb will have a negative charge
so, when you put the comb near moving water (e.g., from a tap), the water will bend towards the comb (bending away from it's original position).
since the comb has a negative charge, and it has to stay balanced, the protons from the water will be attracted to it, causing it to bend.
