Define density.
Mass per unit volume.
What is the equation for density?
•Density= Mass/Volume
What is the density of aerogel?
1.9 kg/m³
What is the density of air?
1.3 kg/m³
What is the density of water?
1000 kg/m³
How can you directly measure the mass of an object?
Use a mass balance
What can you use to measure the volume of a liquid?
Use a measuring cylinder
What objects can you use to calculate the volume of a regular shaped object?
•Ruler
•Digital callipers
•Micrometer