If you dissolve a whole sugar cube in water, what will a balance do while the cube disappears from sight?
A sugar cube disappears from sight in a breakfast drink, setting up a disagreement between what eyes can follow and what a balance can measure.
Talk about it
- What can your eyes tell you after stirring, and what question remains for the balance?
- Which beam position do you predict after the cube's outline is gone?
- How would a spill change this into a different experiment?