Help me!! Idk if it’s right and and I need the answers

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

you know they are heterozygous for a trait because they have it as jj or jj.