Lecture 15. B. 1. Density Review

DENSITY: how much MASS a substance has in a given VOLUME

usu. with respect to density of water, so compare WEIGHT of one BUCKET of substance to WEIGHT of one BUCKET of water ("specific density")

Al = 2.7, silicate rock =~ 3, iron = 7.8, lead = 13.2

NOTE: all these have density > 1, and all SINK in water;