chapter 6 Flashcards
(10 cards)
1
Q
a system that can exchange only energy with the surroundings but not matter is described as a _____ system
A
closed
2
Q
if energy is lost from the system to the surroundings the process is
A
exothermic
3
Q
combustion reactions are always a ____ process
A
exothermic
4
Q
a system in which matter and energy can be exchanged with the surroundings is described as a ___ system
A
open
5
Q
state the first law of thermodynamics
A
energy is neither lost or gained it is transformed
6
Q
if enthalpy is negative it’s
A
exothermic
7
Q
if enthalpy is positive it is
A
endothermic
8
Q
when a reaction is reversed what is effected
A
sign of enthalpy change
9
Q
coffee cup calorimetry is used for reactions in a
A
solution
10
Q
bomb calorimetry is used only for ____ reactions
A
combustion
