Endothermic vs. Exothermic reactions

Front

What is a chemical reaction?

Back

The process in which substances undergo chemical changes that result in the formation of new substances.

Front

What letter represents the energy of the products in a reaction diagram?

Back

D

Front

What happens to the temperature when calcium reacts with water?

Back

The temperature increases from 18°C to 39°C, indicating an exothermic reaction.

Front

True or False: In an endothermic reaction, the system is releasing energy.

Back

False.

Front

In an exothermic reaction, heat is...

Back

given out or released.

Front

Define endothermic reaction.

Back

A reaction that absorbs heat from the surroundings.

Front

Define exothermic reaction.

Back

A reaction that releases heat to the surroundings.

Front

What is the main characteristic of an exothermic reaction?

Back

The release of energy in the form of heat.

Front

What is the main characteristic of an endothermic reaction?

Back

The absorption of energy in the form of heat.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline.