Thermodynamics Review

Relating to specific heat; why does submerging a hot iron in water of equal mass drastically change the temperature of the iron while only changing the temperature of water by a much smaller amount?

• water has a higher specific heat while iron has a low specific heat

• both iron and water have low specific heat, so it shouldn't effect it differently

• iron has a high specific heat while water has a low specific heat

• both iron and water have high specific heat, so it shouldn't effect it differently

Tags

NGSS.HS-PS3-4

From lowest entropy to highest entropy, the states of matter go in this order:

• solid -> liquid -> gas -> plasma

• plasma -> gas -> liquid -> solid

• gas -> plasma -> liquid -> solid

• solid -> liquid -> plasma -> gas

• It depends on the temperature of the object

Tags

NGSS.HS-PS3-4

Which letter depicts ΔH?

• B

• A

• C

• D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What is the activation energy with the catalyst added?

• 100

• 180

• 140

• 40

Tags

NGSS.HS-PS1-4

What is the activation energy with the catalyst?

• 25

• 45

• 35

• 30

Tags

NGSS.HS-PS1-4

According to the graph, what letter depicts activation energy?

• B

• C

• A

• D

Tags

NGSS.HS-PS1-4

How much activation energy is needed for this reaction?

• 300 KJ

• 500 KJ

• 400 KJ

• 100 KJ

Tags

NGSS.HS-PS1-4

According to the graph, what type of energy change will occur?

• energy will be released

• energy will be absorbed

• no energy change will occur

• No way to tell

Tags

NGSS.HS-PS1-4

Which phase change is endothermic?

• evaporating

• condensation

• freezing

• all phase changes are endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If the kinetic energy of the system is decreasing, which of the following phase change may occur?

• melting

• condensation

• boiling

• sublimation

Tags

NGSS.HS-PS3-2