Thermodynamics and Kinetics

What type of reaction is this?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What letter represents the activation energy of this reaction?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-4

What letter represents the enthalpy?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What letter represents the chemical energy stored in the reactants?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-4

What could the units of the y axis be?

• kilojoules

• grams

• moles

• milliliters

Tags

NGSS.HS-PS1-4

What is true about the enthalpy of a reaction?

• It's the reactants - products

• It's always a positive value

• It's always a negative value

• It represents the heat absorbed or released by the rxn

Tags

NGSS.HS-PS1-4

What does it mean for a reaction to be endothermic?

• It occurs slowly

• It occurs quickly

• the reactants have more chemical energy than the products

• the reactants have less chemical energy than the products

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Exothermic reaction cause the surroundings to _____________ in temperature

• increase

• decrease

Tags

NGSS.HS-PS1-4

If the enthalpy of a reaction is -400kJ, what does that mean?

• 400kJ of energy is released by the reaction

• -400kJ of energy is released by the reaction

• 400kJ of energy is absorbed by the reaction-

• 400kJ of energy is absorbed by the reaction

Tags

NGSS.HS-PS1-4

What is the activation energy of this reaction?

• 300kJ

• 400kJ

• 200kJ

• 100kJ

Tags

NGSS.HS-PS1-4