Your teacher gives you 30 ml of vinegar and one gram of baking soda and tells you to find evidence that the law of conservation of mass is correct. design an experiment to find this evidence and state your expected results.

The Law of conservation states that mass nothing can be created nor destroyed by chemical means.

You can make a rocket bottle, it shows the a chemical reaction.

baking soda acts as a base, while vinegar an acid. The reaction releases gas and it makes carbon dioxide

The result is easy even though the substance is mixed, nothing new was created, the formula would be a combination of two substances not a new product. Nothing was destroyed either, therefore it follows the law.

Amethod of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.