How would you use law of conservation mass in a sentence?

Here are a few sentences using the law of conservation of mass:

* "According to the law of conservation of mass, the total mass of the reactants in a chemical reaction must equal the total mass of the products." (This is a very straightforward and accurate statement of the law.)

* "When baking a cake, the law of conservation of mass explains why the finished cake weighs the same as the flour, sugar, eggs, and other ingredients combined." (This uses a relatable example.)

* "Even in nuclear reactions, where matter can be converted to energy, the law of conservation of mass-energy states that the total amount of mass and energy remains constant." (This demonstrates the broader application of the concept.)

Let me know if you'd like to see more examples!