How does the law of conservation of mass apply to a chemical reaction?

Answer 1

The law of conservation of mass states that matter is neither created nor destroyed in a chemical reaction (in a nuclear reaction it is a different matter). Therefore the total mass of the reactants equals the total mass of the products. This law is hard to grasp by some since some reactions are gas creating reactions, and most reactions occur in open systems; Therefore, the gas escapes and cannot be weighed properly, but mass is still conserved.

Answer 2

The law of conservation of mass states that in a physical change or chemical reaction, mass is converted. Mass is neither created nor destroyed. The conservation of mass is more easily observed when a change occurs in a closed container.

Answer 3

Law of conservation of mass states that matter is neither destroyed nor created in a chemical reaction (nuclear reactions are a different matter, no pun intended).

Therefore, the mass of the reactants will equal the mass of the products in a chemical reaction.

This law was often debunked by the ancients since some of the products formed in a chemical reaction can escape to the environment, i.e. a gas.

Answer 4

law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. To make it more clear the suggested activity can be done that take the following chemical solutions in a separate beakers .

a. copper sulphate and sodium carbonate

prepare separately a 5% solution of the suggested chemicals and list them as X and Y .

take a little amount of solution Y in conical flask and some solution of X in an ignition tube . Hang the ignition tube in a flask carefully . make sure that the solutions does not get mix each other . put a cork on the mouth of the flask . weigh the flask with its contents carefully . now tilt and swirl the flask so that the solutions get mixed each other . weigh the flask again . we can observe that the mass remains the same even though the contents get mixed each other .

Answer 5

The law of conservation of mass states that when two things react, nothing is added nor destroyed. So, yes. It states that just because there was a chemical reaction there can't just randomly be something like a potatoe in a water solution.

Answer 6

"Conservation of mass" means that the mass doesn't change. In other words, the total mass - the sum of all masses - before and after the reaction is the same.

Answer 7

The sum of reactants masses is equal to the sum of product masses.

Answer 8

Atoms cannot be added or lost in a chemical reaction. (APEX)