What condition is characterized by an imbalance of salts or chemicals in the blood?

youre right there are

"do a testcross with a homozygous recessive plant."

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.