15 questions
What is the definition of "entropy"??
enthalpy
heat content
disorder
activation energy
Which phase of matter has the least entropy?
solid
liquid
gas
plasma
What phase of matter has the most entropy?
solid
liquid
gas
Which involves an increase in entropy? (if needed, select more than one answer)
spraying an air freshener
picking up apples off the ground
dropping an egg on the floor
arranging a deck of cards by suit
Which involves a decrease in entropy? (if needed, select more than one answer)
condensation: gas to liquid
melting: solid to liquid
sublimation: solid to gas
freezing: liquid to solid
At what temperature would the reaction of vinegar and baking soda occur the fastest?
0oC
50oC
75oC
120oC
Why does a thermometer display a high temperature with hot coffee?
the molecules are moving slowly & have many collisions with the thermometer
the molecules are moving slowly & have few collisions with the thermometer
the molecules are moving quickly & have many collisions with the thermometer
Which number represents condensation?
1
2
3
4
Which number represents melting?
1
2
3
4
Which represents the LIQUID phase?
A
B
C
Which number best represents the point where solid, liquid, & gas coexist in equilibrium?
1
2
3
4
The change in phase represented from point A to point B is...
boiling
melting
condensation
sublimation
The change in phase represented from point A to point B is...
melting
freezing
condensation
boiling
sublimation
The change in phase represented from point A to point B is...
condensation
boiling
sublimation
deposition
melting
From point M to point N at constant pressure, how many phase changes are occurring?
one phase change
two phase changes
three phase changes
no phase change occurs