1. Density Notes

2. Essential Question
How is density different than Mass and Weight?

3. Review: Mass and Volume
This should be in your “mass, weight, volume notes” so you don’t need to write it!
Review: Mass and Volume
Mass: is a measure of the amount of matter or stuff an object contains
Measured in g
Measured using a balance
Volume: is the amount of space an object takes up.
Measured in mL for liquids
Measured in a graduated cylinder
Measured in cm3 for solids
Measured by V = L · W · H in cm
Or by displacement of water in mL
1 mL = 1cm3

4. Density The amount of mass in a given volume.
Describes how much matter is packed into a certain amount of space or how tightly packed the molecules are in a substance.
Density = Mass / Volume D = M / V
Units for density are:
g/mL if it is liquid
g/cm3 if it is a solid

5. Density and Temperature
All samples of the same material whatever their size or shape have the same density if they have the same temperature.
Higher the temperature lower the density because volume increases.
Lower the temperature higher the density because volume decreases.

6. Does size change density?
Aluminum Cube: Aluminum Cylinder:
270g g
100 cm cm3

7. Let’s find the density!
Rubber Stopper Dinosaur Toy

8. Find the Density of Water!
Mass of empty graduated cylinder: ____________g
Trial 1
Trial 2
Mass
Volume
Density

9. Do you LOVE density?
D =