Endothermic/Exothermic Reactions

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.

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.

Front

How can you tell if a reaction is endothermic or exothermic based on temperature change?

Back

If the temperature decreases during a reaction, it is endothermic. If the temperature increases, it is exothermic.

Front

What happens to energy in an endothermic reaction?

Back

Energy is absorbed from the surroundings.

Front

What happens to energy in an exothermic reaction?

Back

Energy is released into the surroundings.

Front

Give an example of an endothermic reaction.

Back

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

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.

Front

What is the role of heat in an endothermic reaction?

Back

Heat is a reactant in an endothermic reaction, as it is absorbed to drive the reaction.

Front

What is the role of heat in an exothermic reaction?

Back

Heat is a product in an exothermic reaction, as it is released during the reaction.

Front

What is a common use of exothermic reactions in everyday life?

Back

Hand warmers utilize exothermic reactions to produce heat.