Katelyn S.

asked • 04/21/16

The volume of a particular rock is 30 cm cubed. If its mass is 120 grams, what is its density?

 
What would happen to the density if you increased the mass of the rock in the question above? What would happen to the density if you increased the volume?
 
If you could explain about density in general, that would be awesome!
Thanks for answering!

Gregory R.

Density = Mass/Volume
 
Mass=120grams
Volume=30cm^3
 
120/30=4grams/cm^3
 
If you increase the mass of the rock, the density will increase because you will end up with a larger fraction. For example 130/30 is greater than 120/30. (130/30=4.3  120/30=4)
 
If you increase the volume, the density will decrease because you will be getting a smaller fraction. For example, 120/40 is less than 120/30. (120/40=3  120/30=4)
 
 
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04/21/16

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