Endothermic vs Exothermic Chemical Reactions

In an exothermic reaction, energy is

• absorbed

• released

Tags

NGSS.HS-PS1-4

In an endothermic reaction, energy is

• absorbed

• released

Tags

NGSS.HS-PS1-4

What instrument would you use to detect an endothermic or exothermic reaction?

• triple beam balance

• ruler

• thermometer

• graduated cylinder

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-6

NGSS.MS-PS3-4

The graph shown represents the potential energy of a given chemical reaction. Which letter represents the energy of the products?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

The graph shown represents the potential energy of a given chemical reaction. Which letter represents the energy of the reactants?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

What kind of reaction is represented by the graph shown?

• Endothermic

• Exothermic

• Cannot be determined

Tags

NGSS.HS-PS1-4

What kind of reaction is represented by the graph shown?

• Endothermic

• Exothermic

• Cannot be determined

Tags

NGSS.HS-PS1-4

During an exothermic reaction, the temperature of the surroundings

• decreases

• increases

• stays the same

Tags

NGSS.HS-PS1-4

During an endothermic reaction, the temperature of the surroundings

• decreases

• increases

• stays the same

Tags

NGSS.HS-PS1-4

A student combined two substances to allow them to react. The temperature of the surroundings before the reaction was 25 ° C. The temperature of the surroundings after the reaction was 18° C. Which of the following is true?

• The reaction is exothermic

• The reaction is endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4