The volume is 1.5 cm^3 and the mass is 7.5 grams. What is the density?
Density is just the number of particles per unit volume. The more stuff in a given volume, the more dense it is. The mass is directly proportional to the number of particles, so the units can be
Thus, the density is
#color(blue)(D) = "7.5 g"/("1.5 cm"^3) = color(blue)("5.0 g/cm"^3)#
What is this density in