Mass Volume and Density Mass is a measurement

Mass, Volume and Density

Mass is a measurement of the amount of matter an object contains. (g)

How is weight different than mass? • Weight measures the force of gravity and mass measures how much matter an object contains.

Volume • Volume is the amount of space an object takes up (cm 3 or m. L) – Measured in m. L for liquids in a graduated cylinder – Measured in cm 3 for solids • Regular shape V= L x W x H • Irregular shape uses displacement method m. L=cm 3

Density • Density is the measure of the amount of matter in a given space. • Density = Mass/Volume • All samples of the same material, whatever their shape and size have the same density

Catwoman vs. Barbie • Catwoman Mass • Barbie Mass 20 g • Catwoman Volume • Barbie Volume 10 cm 3 40 cm 3 • Calculate their densities……. .

Who is more Dense? • Catwoman Barbie 20 g = 2 g/cm 3 10 cm 3 20 g =. 5 g/ cm 3 40 cm 3

Half of Catwoman is………. . • If we cut catwoman in half, what is her density? • Half her mass? • Half her volume?

• Mass = 20 g (10 g) • Volume = 10 cm 3 (5 cm 3) • Density = 2 g/cm 3 • It is the same, all samples of the same material, whatever their shape and size have the same density.

Float or Sink? • Which will float and which will sink?

Density of Water • Based on the densities of Catwoman and Barbie: • What do you predict is the density of water?

• If Catwoman sinks (2 g/ml) and Barbie floats (. 5 g/ml) then I think the density of water is ____g/ ml, because _________.

Data Table Volume of Mass of Water Empty GC Part 1 100 m. L Part 2 50 m. L Mass of Water + GC Mass of Water Density of Water