======Chemical Weathering======


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**Safety: **{{$demo.safety_description}}\\
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**Alternative titles:** Acid Rain and Rock Breakdown
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====Summary====                   
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====Procedure====  
  - Place a piece of chalk or limestone at the bottom of a clear plastic jar.  
  - Carefully pour vinegar into the jar until the chalk is fully submerged.  
  - Seal the jar with its lid.  
  - Observe the chalk or limestone as bubbles form and its surface begins to change, representing the breakdown caused by acid rain.  
  - Record observations and compare predictions with results.



====Links==== 
Chemical Weathering: Acid Rain - AusEarthEd: 
{{youtube>JpRS9N-NWsY?}}\\


📄 Demonstrating Chemical Weathering - iTeachly: [[https://iteachly.com/demonstrating-chemical-weathering/]]\\


====Variations====
  * Compare the effects of vinegar with plain water to highlight the role of acid.  
  * Test different acidic liquids (such as lemon juice) to observe varying intensities of weathering.



====Safety Precautions====
  * Safety goggles required.  
  * Handle vinegar carefully; avoid spills and skin contact.  
  * Do not lean over the jar when pouring vinegar.  
  * Dispose of materials safely after the experiment.




====Questions to Consider====
  * What does the chalk represent in this activity? (Sedimentary rock such as limestone.)  
  * Why does vinegar cause the chalk to bubble? (The acid reacts with calcium carbonate, releasing carbon dioxide gas.)  
  * How is this similar to acid rain affecting real rock formations? (Acid rain reacts with minerals in rocks, breaking them down and changing their structure.)  
  * Which environments would experience more chemical weathering? (Warm, wet climates accelerate chemical reactions and increase weathering rates.)