When pure water and sodium chloride combine, what do they create? A Another pure substance B A mixture C A chemical change D Not enough information is given

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

the answer is d. 74.02

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.