This is a great worksheet to use with students to practice the concept of the Law of Conservation of Mass. This worksheet gives two lab scenarios and asks students to break down an equation into atoms and compare the number of atoms to explore the Law of Conservation of Mass. Students are asked to decide if the chemical reactions are occurring in open or closed systems. This will get your students thinking about why the mass can change during a chemical reaction because some of the atoms are lost as a gas. This worksheet helps easily break down the law to your students while having them practice other skills needed in chemistry.
1. Law of Conservation of Mass Worksheet
2. Law of Conservation of Mass Interactive Notebook Worksheet
3. Answer Key