Topic 4- Lecture 15 Flashcards
A form of energy measured in J
Heat
Measure of the average KE of atoms and molecules in a system
Temperature
KE increases as…
Temperature and velocity increase
Distribution of KEs ___________ as temperature increases
Increases
Two systems at different temperature that are in ___________________ with one another will ______________________.
Thermal contact
Exchange energy/ heat
Transferred from high to low
Temperature
Energy
Same temp
Thermal equilibrium
Conservation of energy
Energy cannot be created or destroyed, but can be transformed from one form to another
System
Actual chemical reaction that is taking place
Surroundings
Anything other than the system
Change in a systems internal energy
ΔE= q+w ΔE= E final- E initial Change in energy Heat that is transferred Work done on the system by surroundings
In an isolated system, energy is_____________
Conserved
Endothermic reaction
Heat goes into system, feels cold
Ectothermic reaction
Heat leaves the system, feels hot
Work equation
w= -PΔV
Work
Negative pressure
Change in volume