Here's why:
* Law of Conservation of Mass: This fundamental law states that mass cannot be created or destroyed in ordinary chemical and physical changes.
* Mixing vs. Chemical Reactions: Mixing substances to form a solution is a physical change, not a chemical reaction. The substances are simply combining, not changing their fundamental chemical composition.
Example:
If you mix 10 grams of sugar with 100 grams of water to make a sugar solution, the total mass of the solution will be 110 grams.
Important Note: While the total mass remains the same, the volume of the solution may be slightly different from the sum of the volumes of the individual components. This is because the molecules of the solute and solvent interact, sometimes leading to a slight contraction or expansion of the mixture.
