Endothermic vs. Exothermic Reactions

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy (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 energy (heat) to its surroundings, resulting in an increase in temperature.

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, releasing heat and light.

Front

What happens to energy during an endothermic reaction?

Back

Energy is absorbed from the surroundings, which can cause the temperature of the surroundings to decrease.

Front

What happens to energy during an exothermic reaction?

Back

Energy is released into the surroundings, which can cause the temperature of the surroundings to increase.

Front

What is the role of energy in chemical reactions?

Back

Energy is involved in breaking and forming bonds during chemical reactions, influencing whether the reaction is endothermic or exothermic.

Front

How can you identify an exothermic reaction?

Back

An exothermic reaction can be identified by a release of heat, light, or sound, and often results in a temperature increase.

Front

How can you identify an endothermic reaction?

Back

An endothermic reaction can be identified by a decrease in temperature and the absorption of heat from the surroundings.

Front

What is cellular respiration?

Back

Cellular respiration is an exothermic process where glucose is broken down with oxygen to release energy for cellular activities.