Endothermic vs Exothermic

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature outside the reaction.

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NGSS.HS-PS1-4

NGSS.HS-PS3-4

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature outside the reaction.

Tags

NGSS.HS-PS1-4

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline, is an example of an exothermic reaction.

Tags

NGSS.HS-PS1-4

Front

Give an example of an endothermic reaction.

Back

Photosynthesis in plants is an example of an endothermic reaction, where plants absorb sunlight to convert carbon dioxide and water into glucose.

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

Front

What happens to temperature in an exothermic reaction?

Back

The temperature increases in an exothermic reaction.

Front

What happens to temperature in an endothermic reaction?

Back

The temperature decreases in an endothermic reaction.

Tags

NGSS.HS-PS1-5

Front

What is the role of heat in an exothermic reaction?

Back

In an exothermic reaction, heat is given out to the surroundings.

Front

What is the role of heat in an endothermic reaction?

Back

In an endothermic reaction, heat is taken in from the surroundings.

Tags

NGSS.HS-PS1-4

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Tags

NGSS.MS-PS1-1

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5