In this video, Jared will demonstrate the law of conservation of matter using two simple experiments. In the first experiment, it can be observed that when we form a salt solution using weighed amount of water and salt, the resulting mixture weighs the same as the sum of weights of initial ingredients. In the second experiment, initially it is observed that burning a paper towel reduces its weight. However, scientific studies have enabled us to know that this decrease in weight results from phase change. Thus, it is established that matter is never destroyed, but can changes its form.
This video satisfies the 5-PS1-2 requirement of fifth-grade science proficiency.
Students who demonstrate understanding can: 5-PS1-2. Measure and graph quantities to provide evidence that regardless of the type of change that occurs when heating, cooling, or mixing substances, the total weight of matter is conserved.