Question: Which of the following is an example of Endothermic Reaction?
- Combustion of wood
- Melting of ice
- Evaporation of water
- All of the above
Answer: C. Evaporation of water
Example of Endothermic Reaction Solution:
An endothermic reaction is a chemical reaction that absorbs heat from its surroundings. The reaction is because it absorbs heat from the air to convert liquid water into water vapor.
- Endothermic reactions are chemical processes that absorb heat from their surroundings, causing a decrease in temperature.
- In summary, photosynthesis is an endothermic reaction as it absorbs energy in the form of sunlight to carry out the chemical process.
How is Oxygen and Carbon Dioxide Transported in Human Beings
Oxygen and carbon dioxide are crucial gases transported in human beings through the bloodstream. Oxygen is absorbed in the lungs, where it binds to hemoglobin in red blood cells. This oxygen-rich blood is then delivered to tissues throughout the body, where cells use oxygen for energy production. Simultaneously, carbon dioxide, a waste product of cellular respiration, diffuses from cells into the bloodstream. It travels back to the lungs, primarily in the form of bicarbonate ions. Once in the lungs, carbon dioxide is expelled during exhalation, ensuring the body maintains a balanced exchange of these vital gases.
