How do substances change after chemical reaction? a. they change phase b. their atoms are rearranged c. their atoms lose electrons d. they lose mass

B.their atoms are rearranged

Explanation:

All the chemical reactions follow the rule of conservation of matter. This rule states that matter can neither be created nor be destroyed during a chemical reaction. The number and type of atoms on the left hand side of a chemical reaction will be same on the right hand side of that chemical reaction. The atoms of chemical species/substances on the left hand side represent reactants while on the right hand side represent products. The only difference is that these atoms get rearranged when the products are formed.

well the answer is 2!