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

What happens to energy in an endothermic reaction?

Back

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

Front

What happens to energy in an exothermic reaction?

Back

In an exothermic reaction, 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 effect of an endothermic reaction on temperature?

Back

An endothermic reaction typically results in a decrease in temperature of the surroundings.

Front

What is the effect of an exothermic reaction on temperature?

Back

An exothermic reaction typically results in an increase in temperature of the surroundings.

Front

Is melting ice an endothermic or exothermic process?

Back

Melting ice is an endothermic process because it absorbs heat from the environment.

Front

Is freezing water an endothermic or exothermic process?

Back

Freezing water is an exothermic process because it releases heat to the environment.