Exothermic and Endothermic Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat or light 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

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

The process of photosynthesis in plants is an example of an endothermic reaction.

Front

What happens to temperature in an exothermic reaction?

Back

The temperature of the surroundings increases during an exothermic reaction.

Front

What happens to temperature in an endothermic reaction?

Back

The temperature of the surroundings decreases during an endothermic reaction.

Front

What is the thermite reaction?

Back

The thermite reaction is an exothermic reaction between aluminum powder and iron oxide that produces molten iron.

Front

How does baking bread relate to endothermic processes?

Back

Baking bread involves endothermic processes where heat is absorbed to facilitate the chemical reactions in the dough.

Front

What is a hand warmer and how does it work?

Back

A hand warmer is a device that uses an exothermic reaction to produce heat, keeping hands warm.

Front

What is the significance of temperature change in chemical reactions?

Back

Temperature change indicates whether a reaction is exothermic (temperature increases) or endothermic (temperature decreases).