The relative viscosity of 2,2,4-trimethylpentane can be measured using a stopwatch, and compared to other liquids.
The relative viscosity of 1-pentanol can be measured using a stopwatch, and compared to other liquids.
A piece of tape pressed against a sample of molybdenum sulfide will peel off layers of the sample. Additional tape can be used to cleave the peeled sample hundreds of times.
Carbon tetrachloride, water and hexane are used to show how polarity and density affect the interactions between substances.