Lab 10 Flashcards
(11 cards)
Heat is form of energy
Thermal energy
As the temperature increases, heat is ____; as temperature decreases, heat is ____.
Gained; lost
Heat(q) is measured in ___, the SI unit for energy
Joules
Heat at constant pressure is called
Enthalpy
Processes which lose energy are called ____ and a have a -∆H
exothermic
processes that gain energy are said to be ____ with a +∆H.
endothermic
A _____ is a device which can measure the amount of heat generated during a thermal reaction or process, usually through an indirect method of measuring heat transfer.
Calorimeter
The amount of heat necessary to increase the temperature of 1 gram of a substance by 1◦C
Specific heat
Since the amount of heat the water gains and the metal loses are equal, the value for heat (q) will be equal but opposite in sign.
True
Heat can be calculated using the formula below:
q= (mass) (specific heat) (Δ Temperature)
When mass is not a factor, the amount of heat required to increase a sample of unknown mass by 1◦C is called
Heat capacity