When you mix two substances together are the volumes addictive?

When mixing two substances, the resulting volume may not be additive due to various factors, such as molecular interactions or changes in density. For example, when mixing liquids like alcohol and water, the total volume can be less than the sum of the individual volumes due to hydrogen bonding. This phenomenon is known as volume contraction. Therefore, it's important to consider the specific substances involved when predicting the final volume.