Endothermic and 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 temperature during an endothermic reaction?

Back

The temperature decreases.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature increases.

Front

What does 'endo' mean in the context of endothermic reactions?

Back

'Endo' means in, inside, or absorb.

Front

What does 'exo' mean in the context of exothermic reactions?

Back

'Exo' means out, outside, or release.

Front

In an endothermic reaction, are the bonds that are broken stronger or weaker than the new bonds formed?

Back

The bonds that are broken are stronger.

Front

In an exothermic reaction, are the bonds that are broken stronger or weaker than the new bonds formed?

Back

The new bonds that are formed are stronger.

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.