The bubble gum experiment is a simple experiment that demonstrates the Law of Conservation of Mass. The experiment consists of blowing a bubble with bubble gum and then measuring the mass of the bubble gum before and after blowing the bubble. The Law of Conservation of Mass states that the total mass of a closed system remains constant over time. In this experiment, the bubble gum is the closed system and the mass of the bubble gum is measured before and after blowing the bubble. The result of the experiment is that the mass of the bubble gum before and after blowing the bubble is the same. This demonstrates that the mass of the bubble gum has not changed, and thus the Law of Conservation of Mass holds true. The experiment also shows that mass is conserved even when a physical change occurs, such as blowing a bubble. Overall, the bubble gum experiment is a simple and effective way to understand the concept of the Law of Conservation of Mass.