Question

according to the law of conservation of matter, how must a chemical equation be written?
the subscript of every element must be the same on each side of the equation.
the same coefficient must be applied to every molecule in the equation.
an equal number of compounds must appear on each side of the equation.
an equal number of atoms must be on both sides of the equation.
question 7 (5 points)

Explanation:

The law of conservation of matter states that matter cannot be created or destroyed in a chemical reaction. This means the total number of each type of atom must be identical on both the reactant and product sides of a chemical equation. Subscripts represent the fixed composition of molecules and cannot be changed to balance equations, applying the same coefficient to all molecules is not required, and the number of compounds does not need to be equal.

Answer:

D. An equal number of atoms must be on both sides of the equation.