Question

with the help of a labelled diagram show that mass can neither be created nor be destroyed in chemical reaction​

Answer 1

Answer:

Technique- Take a solution of calcium chloride in a flask labeled A, and a solution of sodium sulphate in a test tube labeled B.

Tie a thread to the test tube and carefully lower it in the flask. Cork the flask to make it airtight.

Weigh the flask on a balance. It weighs 300.23 grams.

Tilt and swirl the flask and allow the contents of the test tube to come in contact with the contents of the flask.

Observation- Calcium chloride reacts with sodium sulphate to form a white precipitate of calcium sulphate and a solution of sodium chloride.

Weigh the flask again. There will be no change in the weight of the flask. It again weighs 300.23 grams.

Conclusion- Scientists noticed that if chemical reactions were carried out in a closed container, there is no change in the mass.

The total mass of the reactants is equal to the total mass of the products

Explanation:

Answer 2

Answer:

Explanation:

the law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant.