Endothermic/exothermic 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

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

Back

'Exo' means 'out' or 'released'.

Front

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

Back

'Endo' means 'in' or '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 is an example of an endothermic reaction, where plants absorb energy from sunlight.

Front

What is the general equation for an exothermic reaction?

Back

Reactants → Products + Energy (heat/light)

Front

What is the general equation for an endothermic reaction?

Back

Reactants + Energy (heat) → Products

Front

What happens to temperature during an exothermic reaction?

Back

The temperature of the surroundings increases during an exothermic reaction.

Front

What happens to temperature during an endothermic reaction?

Back

The temperature of the surroundings decreases during an endothermic reaction.