12 Regents: Thermodynamics, Kinetics and Equilibrium

Choose all of the following that affect the rate of reactions?

• surface area

• temperature

• concentration

• None of the answers affect rate of reaction

Tags

NGSS.HS-PS1-5

Which of the following is the correct definition of entropy?

• equal to the internal energy of the system plus the product of pressure and volume

• the degree of disorder or randomness in the system.

• accompanied by or requiring the absorption of heat

• accompanied by the release of heat.

What letter represents the activation energy?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

Enthalpy deals with the measurement of

• Length

• Area

• Heat energy

• Volume

Tags

NGSS.HS-PS3-4

What type of reaction occurs in a hand warmer

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

Given the change of phase: CO₂(g) —> CO₂(s). As CO₂(g) changes to CO₂(s), the entropy of the system

• decreases

• increases

• remains the same

Which interval represents the heat of reaction for the reaction?

• A

• B

• D

• E

Tags

NGSS.HS-PS1-4

Reactions tend to be thermodynamically favored if they are exothermic.

• True

• False

Tags

NGSS.HS-PS1-4

Which of the following statements about catalysts is true?

• It does not take part in the reaction

• It increase the yield of the reaction

• It provides an alternative pathway for the reaction

• It increases the number of collisions between reacting molecules per second

Adding a catalyst to a chemical reaction changes the rate of reaction by causing

• a decrease in the activation energy

• an increase in the activation energy

• a decrease in the heat of reaction

• an increase in the heat of reaction

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5