When a chemical reaction is carried out in a sealed container,the substances may change in color,temperature,or state,but no change in mass is detected.This is evidence of the:
A)law of conservation of mass
B)law of constant composition
C)law of definite proportions
D)existence of electrons
E)existence of protons

Question

Quizplus · Accepted Answer

The fact that no change in mass is detected indicates that the total mass of the reactants and products remains the same, which is in accordance with the law of conservation of mass. This law states that in a closed system, mass cannot be created or destroyed, only transformed into different forms.

When a Chemical Reaction Is Carried Out in a Sealed