Endothermic vs Exothermic Chemical Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat to its surroundings.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat.

Front

How does an exothermic reaction affect the temperature of its surroundings?

Back

An exothermic reaction increases the temperature of its surroundings, making them feel warmer.

Front

How does an endothermic reaction affect the temperature of its surroundings?

Back

An endothermic reaction decreases the temperature of its surroundings, making them feel colder.

Front

What happens to energy in an exothermic reaction?

Back

In an exothermic reaction, energy is released.

Front

What happens to energy in an endothermic reaction?

Back

In an endothermic reaction, energy is absorbed.

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

Give an example of an endothermic reaction.

Back

Photosynthesis in plants is an example of an endothermic reaction, as it absorbs sunlight energy.

Front

What is the role of activation energy in chemical reactions?

Back

Activation energy is the minimum energy required to initiate a chemical reaction.

Front

How can you identify an exothermic reaction from temperature changes?

Back

If the temperature of the surroundings increases during a reaction, it is likely exothermic.