======Balloon Volume and Temperature======


<WRAP right box>
**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
\\
**Categories:** {{$demo.categories}}
\\


**Alternative titles:** The Effects of Temperature on Balloons, Charles's Law
</WRAP>

====Summary====                   
{{$demo.summary}}



====Procedure====  
  - Stretch a balloon over the mouth of an empty 2-liter bottle.  
  - Place one bottle in the refrigerator and predict what will happen to the balloon.  
  - Place the second bottle in a pan of hot water and record how the balloon changes.  
  - After observing both, move both bottles to the freezer for several minutes.  
  - Record observations about how the extreme cold affects the balloons.  
  - Sketch the balloons in each condition on poster board to illustrate results.  




====Links==== 
Science at Home - SE2 - EP10: Charles's Law of Ideal Gases - The Sci Guys: 
{{youtube>NplVuTrr59U?}}\\

Balloon at Room Temperature Verse Freezing Find Volume (Ideal Gas Law Physics Problem) - VAM! Physics & Engineering: 
{{youtube>x9l1Cyj0wl8?}}\\

📄 The Effects of Temperature on Balloons - Education.com: [[https://www.education.com/activity/article/effects-temperature-balloons/]]\\


====Variations====
  * Try different temperatures (room temperature, warm water, ice water) to compare results.  
  * Test different sized balloons to see if volume changes are more dramatic.  
  * Measure balloon circumference with a string or tape measure for more quantitative data.




====Safety Precautions====
  * Handle hot water carefully to avoid burns.  
  * Place bottles in the refrigerator/freezer gently to avoid breakage.  
  * Ensure proper supervision when children use hot water.





====Questions to Consider====
  * What happened to the balloon in hot water? Why?  
  * What happened to the balloon in the refrigerator and freezer?  
  * How does this experiment demonstrate Charles’s Law (volume ∝ temperature at constant pressure)?  
  * What real-world examples show this principle (e.g., hot air balloons, weather balloons, car tire pressure in different temperatures)?  
  * Why is it important to fill balloons or tires with room-temperature air rather than very hot or very cold air?