Can somebody please explain the difference between exothermic and endothermic reactions?
What do these two terms mean?
https://www.dictionary.com/
endothermic means the reaction absorbs more energy than it releases and exothermic means it releases more energy than it absorbs. I was looking for examples of endothermic and exothermic reactions that compare and contrast the two terms.
https://www.google.com/search?source=hp&ei=jPOvW6P8Lo_7jwS1laCwBA&q=examples+of+endothermic+and+exothermic+reactions&btnK=Google+Search&oq=examples+of+endothermic+and+exothermic+reactions&gs_l=psy-ab.3..0l3j0i22i30l7.3461.3461..5047...0.0..0.207.319.0j1j1......0....1j2..gws-wiz.....0.ZUlL6lNKq_E
Ms. Sue, please don't answer if you don't know how to give me a thorough explanation instead of posting links.
Don't you think the links give you at least as good information as one teacher?
You could wait several hours for a chemistry teacher.
Also check the Similar Questions below.
Certainly! Exothermic and endothermic reactions are two different types of chemical reactions that involve the release or absorption of energy. Let me explain the difference:
1. Exothermic reactions:
- In exothermic reactions, energy is released to the surroundings in the form of heat, light, or both.
- The initial energy of the reactants is higher than the final energy of the products, resulting in a negative change in enthalpy (∆H < 0).
- Example: Combustion reactions, such as burning wood or gasoline. These reactions release heat and often produce light.
2. Endothermic reactions:
- In endothermic reactions, energy is absorbed from the surroundings, which typically causes a drop in temperature.
- The final energy of the products is higher than the initial energy of the reactants, leading to a positive change in enthalpy (∆H > 0).
- Example: Photosynthesis, where plants absorb energy from sunlight to convert carbon dioxide and water into glucose and oxygen.
To determine if a reaction is exothermic or endothermic, you can consider the overall energy change (∆H). Here's how you can find this information:
1. Check the enthalpy (∆H) value: Chemical reactions can be represented by balanced chemical equations. Sometimes, these equations provide the enthalpy change along with other information. If the ∆H value is positive, the reaction is endothermic, whereas a negative ∆H indicates an exothermic reaction.
2. Observe temperature change: If you can observe the temperature during a reaction, an exothermic reaction will cause an increase in temperature, as heat is released. In contrast, an endothermic reaction will lead to a decrease in temperature due to heat absorption.
It's important to note that while energy is released or absorbed, the total amount of energy involved in a reaction remains conserved, following the law of energy conservation.
I hope this explanation helps! If you have any further questions, feel free to ask.