Here are some key characteristics of exothermic reactions:
* Energy is released: This means the products have lower energy than the reactants.
* Heat is produced: You can often feel this as a rise in temperature.
* The change in enthalpy (ΔH) is negative: Enthalpy is a measure of the total energy of a system, and a negative ΔH indicates that energy has been released.
Examples of exothermic reactions:
* Burning fuel: Burning wood, natural gas, or gasoline releases heat and light.
* Explosions: These are extremely rapid exothermic reactions.
* Neutralization reaction: When an acid and a base react, they release heat.
* Rusting: The reaction of iron with oxygen to form rust releases heat, though it happens very slowly.
Let me know if you would like to know more about exothermic reactions!
