What scientific principle or law is used in the process of balancing chemical equations?

 

(a) What scientific principle or law is used in the process of balancing chemical equations? (b) In balancing equations is it acceptable to change the coefficients, the subscripts in the chemical formula, or both?

balancing chemical equations

Which of the following statements about chemical equations is(are) true?

a. When balancing a chemical equation, you can never change the coefficient in front of any chemical formula.

b. The coefficients in a balanced chemical equation refer to the number of grams of reactants and products.

c. In a chemical equation, the reactants are on the right and the products are on the left.

d. When balancing a chemical equation, you can never change the subscripts of any chemical formula.

e. In chemical reactions, matter is neither created nor destroyed so a chemical equation must have the same number of atoms on both sides of the equation.