# Conversion Factors and Functions Lecture Demonstrations

### From ChemPRIME

## Floating Bowling Ball

Bowling balls are officially 8.59" in diameter, so the density of a 12 lb bowling ball can be calculated in lb/in^{3}, then converted to g/cm^{3} for comparison to water, and other things that either float (D<1.0g/cm^{3}) or sink (D>g/cm^{3}). Objects can then be tested in a tub of water. See [[1]]. Balls can also be weighed on a family scale and measured with yardsticks to introduce a discussion of measurement errors.