In this experiment, students are if the law of conservation of mass holds true for both physical and chemical changes. Students observe two color-changing reactions, one physical and one chemical, and use scales to determine if the mass changes throughout the reaction.
Next Generation Science Standards Connections
MS-PS-1-5: Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
Related Science TEKS
Grade 6 TEKS: 6.5C
Grade 7 TEKS: 7.6
Grade 8 TEKS: 8.5E