Endothermic and Exothermic Reactions

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature of the surroundings.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature of the surroundings.

Front

What is activation energy?

Back

Activation energy is the minimum amount of energy required to initiate a chemical reaction.

Front

How can you identify an endothermic reaction on a graph?

Back

In a graph of an endothermic reaction, the products have higher energy than the reactants, indicating that energy was absorbed.

Front

How can you identify an exothermic reaction on a graph?

Back

In a graph of an exothermic reaction, the products have lower energy than the reactants, indicating that energy was released.

Front

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

Back

The temperature of the surroundings increases during an exothermic reaction due to the release of heat.

Front

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

Back

The temperature of the surroundings decreases during an endothermic reaction due to the absorption of heat.

Front

What is chemical potential energy?

Back

Chemical potential energy is the energy stored in the bonds of chemical compounds, which can be released or absorbed during a chemical reaction.

Front

What is the relationship between bond formation and energy?

Back

Energy is released when bonds are formed and absorbed when bonds are broken.

Front

What is the significance of the activation energy in a reaction?

Back

Activation energy determines the rate of a reaction; higher activation energy means a slower reaction rate.