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# Density

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by

## Robert White

on 19 September 2014

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#### Transcript of Density

Density
Density - comparison of how much matter there is in a certain amount of space
Which object is more dense?
Which object is more dense?
What is density?
Density = mass
Volume
the units for density are:
g
ml
g
cm
3
or
Let's try a problem!
9g
3ml
= 3g/ml
Frank has a paper clip. It has a mass of 9g and a volume of 3ml. What is its density?
Solve:
3g
3ml
= 1g/ml
Frank also has an eraser. It has a mass of 3g and a volume of 3ml. What is its density?
Solve:
Try these problems with your partner
Jack has a rock. The rock has a mass of 6g and a volume of 3ml. What is the density of the rock?
Jill has a pen. The pen has a volume of 9ml and a density of 2g/ml. What is the mass of the pen?
Now try these problems on your own
Alicia has a watch. It has a volume of 2ml and a mass of 4g. What is the density of the watch?
Mia has a wallet. It has a mass of 15g and a density of 3g/ml. What is the volume of the wallet?
Buoyancy & Solubility
Buoyancy - power to float in a liquid
Water has a density of 1.0 g/ml
if an object has a density higher than 1.0g/ml, it will sink
if an object has a density lower than 1.0g/ml, it will float
Solubility - able to be dissolved
example: salt
Properties of Matter
Full transcript