Thermodynamic

How many laws of thermodynamics are there?

• 1

• 2

• 3

• 4

The ________ law of thermodynamics states the entropy of a system not in thermal equilibrium increases.

• first

• second

• third

• Zeroeth

___________ is the randomness or disorder of a thermodynamic system.

• Temperature

• Heat

• Entropy

• Energy

Which law establishes the concept of temperature?

• 1st

• 2nd

• 3rd

• Zeroeth

______________ - Branch of chemistry concerned with energy changes. 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Which principle states that the total entropy of an isolated system can never decrease over time?

• First Law of Thermodynamics

• Second Law of Thermodynamics

• Third Law of Thermodynamics

• Zeroth Law of Thermodynamics

What is true about thermodynamically favorable reactions?

• They need outside energy to be put in

• They always increase entropy

• They always have a negative ΔH

• ΔG is positive

Zeroth law of thermodynamics is:

• Kinetic energy of molecules of a gas is zero

• Ideal gas does not contain molecules

• If two systems are thermal equilibrium third one is also in equilibrium

• Absolute zero temperature cannot be obtained

Predict the sign (+, -, or 0) of ∆G_f°, ∆H_f°, ∆S_f°, respectively, for the deposition of carbon dioxide (CO₂) at room temperature and atmospheric pressure. CO₂ (g) → CO₂ (s)

• -, +, +

• 0, +, +

• -, +, -

• +, -, -

Tags

NGSS.HS-PS1-4

Define Endothermic

• Energy is absorbed; ΔH is negative; Going from Liquid to Gas, and Gas to Liquid

• Energy is released; ΔH is negative; Going from Solid to Liquid, and Liquid to Gas

• Energy is released; ΔH is positive; Going from Solid to Liquid, and Liquid to Gas

• Energy is absorbed; ΔH is positive; Going from Solid to Liquid, and Liquid to Gas

Tags

NGSS.MS-PS1-4