Common Examples of Endothermic Processes List

📚 Quick Study Guide

• 🧊 Definition: Endothermic processes absorb heat from the surroundings, leading to a decrease in temperature.
• 🌡️ Temperature Change: The system feels colder as it gains heat.
• 🧪 Chemical Reactions: Many chemical reactions are endothermic, requiring energy input to proceed.
• 💧 Physical Changes: Phase transitions like melting and boiling are often endothermic.
• ☀️ Photosynthesis: Plants use sunlight (energy) to convert carbon dioxide and water into glucose and oxygen.
• ⚗️ Examples: Common examples include melting ice, evaporating water, and dissolving certain salts.
• 🔢 Enthalpy Change: Endothermic reactions have a positive enthalpy change ($\Delta H > 0$).

Practice Quiz

1. Which of the following is an example of an endothermic process?
   1. Burning wood
   2. Freezing water
   3. Melting ice
   4. Condensation of water vapor
2. What happens to the temperature of the surroundings during an endothermic reaction?
   1. Increases
   2. Decreases
   3. Remains the same
   4. Fluctuates rapidly
3. Which of the following reactions typically requires energy input in the form of heat?
   1. Combustion
   2. Neutralization
   3. Decomposition
   4. Precipitation
4. Which phase transition is an example of an endothermic process?
   1. Deposition
   2. Sublimation
   3. Condensation
   4. Freezing
5. In an endothermic reaction, the enthalpy change ($\Delta H$) is:
   1. Negative
   2. Positive
   3. Zero
   4. Unpredictable
6. Photosynthesis is an example of an endothermic process because it:
   1. Releases energy
   2. Absorbs energy from sunlight
   3. Does not involve energy change
   4. Creates water
7. Dissolving ammonium nitrate in water is an example of:
   1. An exothermic process
   2. An endothermic process
   3. A neutral process
   4. A catalytic process