If objects are the same size they will have the same density.
Different materials have different densities.
Density is made up of two other measurements – mass and volume.
true
The density of a substance like gold is always different.
The density of a substance is the same for all samples of the substance.
The density of water is 1 g/mL. true
An object will float if it is more dense than the surroundingliquid.
An object will float if it is less dense than the surrounding liquid.
gold = 19.3 g/cm3
8 cm3 of gold = 154.4 g
water = 1 g/mL wood = 0.5 g/cm3
8 mL of water = 8 g 8 cm3 of wood = 4 g
1. If you pack more mass into the same volume, it’s more dense.
2cm2 cm
2 cm
Volume = 8 cm3
Mass = 8 g
Volume = 8 cm3
2 cm2 cm
2 cm
Volume = 8 cm3
2 cm
2 cm
2 cm
Mass = 16 g Mass = 24g
Density = 1 g/cm3 Density = 2 g/cm3 Density = 3 g/cm3
2. If you pack the same mass into a smaller volume, it’s more dense.
3 cm3 cm
3 cm
Volume = 27 cm3
Mass = 54 g
Volume = 8 cm3
2 cm2 cm
2 cm
Volume = 1 cm3
1 cm
1 cm
1 cm
Mass = 54 g Mass = 54 g
Density = 2 g/cm3 Density = 6.75 g/cm3 Density = 54 g/cm3
3. Just because something has more mass does not mean that it’s more dense.
Mass = 10 g Mass = 20 g
Volume = 2 cm3 Volume = 5 cm3
Density = 5 g/cm3 Density = 4 g/cm3
definition: the measure of how much mass is contained in a given volume of space
Made up of two measurements: mass and volume
density = massvolume
density of a solid
g/cm3
density of a liquid
g/mL
density
Formula: massvolume
Example:
styrofoam
mass = 8 g
volume = 35 cm3
density = 0.2 g/cm3
mass = 18 g
volume = 20 cm3
density = 0.9 g/cm3
candle
mass = 5 g
volume = 2 cm3
density = 2.5 g/cm3
marbles
mass = 78 g
volume = 10 cm3
density = 7.8 g/cm3
iron
mass = 3 g
volume = 6 cm3
density = 0.5 g/cm3
beach ball
mass = 35 g
volume = 50 cm3
density = 0.7 g/cm3
pumpkin
mass = 81 g
volume = 30 cm3
density = 2.7 g/cm3
aluminum
Definition:the measure of how much mass is contained in a given volume of space
Formula: D = mass volume
Units of Measurement:g/cm
g/mL
Booklet
Density Lab
