Endothermic and Exothermic Reactions-Levings

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

What happens to energy in an endothermic reaction?

Back

Energy is absorbed to break chemical bonds that require a lot of energy to break.

Front

What happens to energy in an exothermic reaction?

Back

Energy is released when chemical bonds are formed.

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 exothermic reactions?

Back

Heat is released into the surroundings, often causing the temperature of the surroundings to rise.

Front

What is the role of heat in endothermic reactions?

Back

Heat is absorbed from the surroundings, often causing the temperature of the surroundings to drop.

Front

Is cellular respiration an endothermic or exothermic reaction?

Back

Cellular respiration is an exothermic reaction.

Front

True or False: Endothermic reactions release energy.

Back

False. Endothermic reactions absorb energy.