science so confused??
posted by sam .
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 _______
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.