Endothermic vs Exothermic Rxns

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

What is an exothermic reaction?

Back

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

Front

How can you identify an exothermic reaction on an energy diagram?

Back

In an energy diagram, an exothermic reaction is identified by the products having lower energy than the reactants.

Front

How can you identify an endothermic reaction on an energy diagram?

Back

In an energy diagram, an endothermic reaction is identified by the products having higher energy than the reactants.

Front

What happens to the temperature of the surroundings during an exothermic reaction?

Back

The temperature of the surroundings increases during an exothermic reaction.

Front

What happens to the temperature of the surroundings during an endothermic reaction?

Back

The temperature of the surroundings decreases during an endothermic reaction.

Front

What is the role of activation energy in chemical reactions?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

Can you 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

Can you 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 significance of the energy change in a chemical reaction?

Back

The energy change indicates whether a reaction is exothermic or endothermic, affecting temperature and energy transfer.