Posted by **sam** on Tuesday, April 22, 2008 at 1:18am.

help please I keep reading about heat in my book and just cant get it.

the amount of heat gained or lost by a substance is equal to the product of its _______ times the change in _______. Within a closed container, the heat lost by one substance must be ______to the heat gained by another substance. A device that makes use of this principle to measure the heat given off in chemical reactions is called _______

- science so confused?? -
**bobpursley**, Tuesday, April 22, 2008 at 8:40am
heat capacity; temperature ; equal; calorimeter.

Now on the first, the question is poorly worded. Heat given off is equal to the product of mass x specific heat capacity x change in temperature.

Those three things define heat change. In olden days, mass x specific heat content was called heat capacity, it is seldom used that way any more. So Heat change would be heat capacity x change in temperature in those terms.

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