Students learn that when combining two substances, even though they may change form, the total mass is conserved.  Students also categorize substances based on their smell, texture, color, etc.

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.

5-PS1-3.Make observations and measurements to identify materials based on their properties.