Endothermic and Exothermic Graphs

How can you tell this reaction is exothermic: MgO + CaS ----> CaO + MgS + 200 KJ

• Energy is written on the products side

• Energy is being released

• Less energy is stored on product side

• All of these tell me

Tags

NGSS.HS-PS1-4

_____ reactions usually feel hot!

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

Which letter shows the heat change?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Which letter shows the activation energy?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-4

The graph represents an

• Exothermic Reaction

• Endothermic Reaction

Tags

NGSS.HS-PS1-4

The graph represents an

• Exothermic Reaction

• Endothermic Reaction

Tags

NGSS.HS-PS1-4

This graphs show a _____________ reaction.

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

Which of the following graphs represents an endothermic reaction?

• A graph with products at a higher energy level than reactants

• A graph with reactants at a higher energy level than products

• A graph with a flat line indicating no energy change

• A graph with a peak at the beginning and end

Tags

NGSS.HS-PS1-4

In an exothermic reaction graph, what does the peak represent?

• The activation energy required to start the reaction

• The energy released during the reaction

• The energy absorbed during the reaction

• The equilibrium point of the reaction

What is the main difference between endothermic and exothermic reaction graphs?

• Endothermic graphs show energy absorption, exothermic show energy release

• Endothermic graphs have a higher peak, exothermic have a lower peak

• Endothermic graphs are linear, exothermic are curved

• Endothermic graphs show energy release, exothermic show energy absorption

Tags

NGSS.HS-PS1-4