PE diagrams

Which interval represents the potential energy of the reactants in this diagram?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

What is represented by interval C?

• Potential energy of the reactants

• Potential energy of the products

• Activation Energy

• Heat of reaction

Tags

NGSS.HS-PS1-4

Which interval represents the potential energy of the products?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

Which interval represents the activation energy?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

What does A + B represent?

• Reactants

• Products

• Activation Energy

• Heat of reaction

Tags

NGSS.HS-PS1-4

How much energy does it take to start this reaction?

• 20 kJ

• 100 kJ

• 60 kJ

• -60 kJ

Tags

NGSS.HS-PS1-4

Is this reaction endothermic or exothermic?

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

What is the heat of reaction for the reaction shown in this PE diagram?

• 50kJ

• -50 kJ

• 200 kJ

• -200 kJ

Tags

NGSS.HS-PS1-4

Which interval would be changed by the presence of a catalyst?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

An endothermic reaction is

• A reaction that absorbs heat, and the products have less PE than the reactants

• A reaction that releases heat, and the products have more PE than the reactants

• A reaction that absorbs heat, and the products have more PE than the reactants

• A reaction that releases heat, and the products have more PE than the reactants

Tags

NGSS.HS-PS1-4