Long Quiz Week 1-4

It is used to measure how spread out or dispersed the energy of the system.

• enthalpy

• entropy

• free energy

• equilibrium

It is a change in free energy where the reaction is non-spontaneous in the forward direction and work must be supplied to make it occur.

• ΔG<0

• ΔG>0

• ΔS<0

• ΔS>0

Which of the following is a spontaneous process?

• a ball rolls up a hill

• a fruit turns yellow as it ripens

• ice i is formed at ambient temperature

• throwing 50 coins results in all tails

Which of the following represents a spontaneous process?

• ΔS<0

• ΔS=0

• ΔG > 0

• ΔG < 0

Which of the following is non-spontaneous?

• rain falls from the sky

• a plant grows into a tree

• a fruit rots after several days

• a cell phone battery is being recharge

Which equation is incorrect about the entropy of a substance?

• S_gas = 0

• S_liquid > 0

• S_gas > S_solid

• S_liquid > S_solid

Which of the following processes lead to an increase in entropy of the system?

• heating

• deposition

• freezing

• condensation

What do you call to a portion of energy change in spontaneous reaction that is available to do useful work?

• Enthalpy

• Entropy

• Gibb's free energy

• Equilibrium

Which of the following exhibits negative entropy?

• An ice cubes melts on the table.

• A lump of sugar dissolves in a glass of water.

• A box of marbles drops, and the marble scatter on the floor.

• Fast moving vehicles halt and line up during red light.

Which of the following statements best describes the Second Law of Thermodynamics?

•  The internal energy of the universe is constant.

• Energy can neither be created nor destroyed.

• At absolute zero, the entropy of a crystal is considered to be zero.

• When an isolated system undergoes a spontaneous change, the entropy of the system increases.