Endo and Exo Reactions

During an exothermic reaction, heat is _________ and chemical bonds __________.

• released, formed

• absorbed, broken

• released, broken

• absorbed, formed

Tags

NGSS.HS-PS1-4

During an endothermic reaction, heat is ________ and chemical bonds _______.

• released, formed

• absorbed, broken

• released, broken

• absorbed, formed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Have you ever eaten sherbet sweets? They fizz in your mouth and your tongue feels cold. Why do you think that is?

• It is an exothermic reaction

• It is an endothermic reaction

• It is made of ice

• It is dissolving your mouth

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When a candle is lit hydrocarbons are combusting. An exothermic reaction is occuring. Energy is being _________________ .

• absorbed

• frozen

• destroyed

• released

Tags

NGSS.MS-PS3-5

What type of reaction occurs in a hand warmer

• exothermic

• endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Which of the following examples is an endothermic reaction?

• Potassium Chloride dissolves in water the temperature drops.

• Acid mixed with Sodium Carbonate the temperature drops.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is an example of endothermic process?

• Chemical Ice Pack

• Boiling Water

• Bonfire

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is TWO ways to know an Endothermic Reaction has occurred?

• Temperature Drops

• Something is dissolved

• Temperature Rises

• Combustion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Solid --> liquid --> gas is what type of reaction?

• endothermic

• exothermic

• catalytic

• inhibited

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Ice cubes in your glass of soda melt.

• endothermic

• exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5