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Extensive/Intensive Property

Posted: Thu Feb 01, 2018 11:58 pm
by Connie2I
What does being an intensive/extensive property mean?

Re: Extensive/Intensive Property

Posted: Fri Feb 02, 2018 12:50 am
by Kelly Seto 2J
Extensive properties depend of the amount of substance or matter measured while intensive properties, like boiling point and density, do not

Re: Extensive/Intensive Property

Posted: Fri Feb 02, 2018 1:18 am
by Angel Gomez 1K
To add to the above response, you can also consider heat capacity vs. specific heat capacity.

The heat capacity of a bomb calorimeter, for example, does not depend on the amount of substance because it is a defined object. It has a specified mass for which to measure it's heat capacity, and we cannot change that mass-- we do not consider it. Therefore, we measure the heat capacity of the calorimeter as a whole. This makes heat capacity an intensive property to the calorimeter.

On the other hand, specific heat capacity is measured in the units J/°C* g. As you can tell, it measures how many joules it will take to raise ONE GRAM of a substance by one degree celsius. Therefore, because specific heat capacity is dependent on the amount of a substance, it is an extensive property. We need to measure the amount of substance before we find specific heat.

Re: Extensive/Intensive Property

Posted: Sat Feb 03, 2018 2:33 pm
by Shreya Ramineni 2L
Intensive properties do not depend on quantity while extensive do. Intensive are preferred because they are more standardized.

Re: Extensive/Intensive Property  [ENDORSED]

Posted: Sat Feb 03, 2018 3:01 pm
by Kaylin Krahn 1I
You can change an extensive property to intensive by dividing it by something like mass so that it is not "dependent" anymore