Endo Exo

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Front

In an endothermic reaction, what happens to the temperature of the surroundings?

Back

The temperature of the surroundings decreases because heat is absorbed.

Front

In an exothermic reaction, what happens to the temperature of the surroundings?

Back

The temperature of the surroundings increases because heat is released.

Front

What is the general equation for an exothermic reaction?

Back

Reactants → Products + Energy (heat)

Front

What is the general equation for an endothermic reaction?

Back

Reactants + Energy (heat) → Products

Front

What happens to the energy stored in chemical bonds during an exothermic reaction?

Back

The energy stored in the chemical bonds of the reactants is released as heat.

Front

What happens to the energy stored in chemical bonds during an endothermic reaction?

Back

The energy stored in the chemical bonds of the reactants is absorbed from the surroundings.

Front

Give an example of an endothermic reaction.

Back

Dissolving ammonium nitrate in water is an endothermic reaction.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline, is an exothermic reaction.