Chapter 5 key terms Flashcards
What is electrostatic potential energy?
the amount of work done to move a unit charge from a reference point to a specific point inside the field without producing an acceleration
When does electrostatic occur?
seen between oppositely charged ions
Is energy released or consumed when chemical bonds are formed?
released
What is the relationship between potential energy and the distance of ions from one another?
As Ions become closer, potential energy decreases
Is energy consumed or released when chemical bonds are broken?
consumed
What is an open system?
a region that can exchange heat and mass with its surroundings
What is a closed system?
a region that can only exchange heat with its surroundings
What is an Isolated system?
a region that can’t exchange heat or mass with its surroundings
Is delta E positive or negative when the system gains energy from the surroundings?
positive
Is delta E positive or negative when the system loses energy to the surroundings?
negative
Meaning of +q and - q
+q: system gains heat
-q: system loses heat
Meaning of +w and -w
+w: work done on the system
-w: work done by system
meaning of +deltaE and -deltaE
+deltaE: net gain of energy by system
-deltaE: net loss of energy by system
What’s an endothermic process?
heat is absorbed by the system from the surroundings
What’s an exothermic process?
heat is released by the system into the surroundings
