Very Short Question and Answers - Law of Conservation of Mass

The Law of Conservation of Mass states that mass can neither be created nor destroyed in a chemical reaction.

When the solutions of X and Y are mixed, a chemical reaction occurs, potentially forming new substances.

The cork prevents gas from escaping, ensuring that no mass is lost during the reaction.

No, the mass of the flask and its contents remains the same before and after mixing.

The formation of a new substance or observable change, like color change or precipitation, indicates a chemical reaction.

Weighing the flask before and after the reaction helps verify that the mass is conserved in the reaction.

If gas bubbles are formed, it indicates that a reaction is occurring and new substances are being produced.

It demonstrates the Law of Conservation of Mass; the total mass remains constant during the reaction.

An example could be copper sulphate (from group X) and sodium carbonate (from group Y).

The conclusion would be that mass is conserved during chemical reactions as indicated by the equal weights before and after.