Acid rain can be simulated with as little as some distilled water, matches with high sulfur content and a glass jar that can be sealed shut with a lid. If the simulated acid rain is for a science project, adding bromothymol blue solution allows you to demonstrate that the water has become acidic.
- Gather the materials
In addition to the items listed above, you may want a medicine dropper, a graduated cylinder and a test tube. The heads of safety matches (the matches that must be struck on a strip on the matchbox) are made of sulfur.
- Create sulfur and carbon dioxide
Light several matches, drop them into the jar while lit and seal the jar. Allow the matches to burn out. Carbon dioxide and sulfur gas are now present in the jar.
- Add water or bromothymol blue solution
Adding water to the jar, sealing and shaking creates water that is similar to acid rain. If the goal is to demonstrate that the water composition has changed, pour 5 milliliters of distilled water into a test tube, and add drops of bromothymol blue solution to it until the water turns blue. After adding the blue water to the jar, re-seal and shake the mixture. It should change color, indicating that the water is now acidic.