Final answer:
The law of conservation of mass states that mass is conserved in a chemical reaction. Both volume and mass are conserved when alcohol and water are mixed.
Step-by-step explanation:
The law of conservation of mass states that mass is conserved in a chemical reaction. This means that the total mass of the reactants is equal to the total mass of the products. In the case of alcohol and water mixing, both volume and mass are conserved. The total volume of the mixture will be the sum of the volumes of alcohol and water, and the total mass will be the sum of the masses of alcohol and water.
For example, if you mix 100 mL of alcohol with 200 mL of water, the total volume of the mixture will be 300 mL. Similarly, if the alcohol has a mass of 50 g and the water has a mass of 150 g, the total mass of the mixture will be 200 g.