ARTICLES

According to the Pennsylvania Department of Conservation and Natural Resources (DCNR), changes in water's pH levels are caused by the dumping of certain chemicals into water systems. Dumping may be done by communities, i...

www.reference.com/science/causes-ph-levels-change-water-4b86778eb926a047

The pH of pure water at 25 degrees Celsius is very close to 7. This pH value indicates that water is neutral, meaning that it is neither acidic nor basic. Acids have pH values lower than 7, and bases have pH values highe...

www.reference.com/article/ph-water-4926c902f5efe096

Depending on the chemicals in the soil, the pH of water passing through it increases, decreases or remain the same. In areas where water passes through soil containing limestone, dissolving the calcium carbonate in water...

www.reference.com/article/soil-affect-ph-water-c9a6164fc90dfbad

SIMILAR ARTICLES

Depending on the chemicals in the soil, the pH of water passing through it increases, decreases or remain the same. In areas where water passes through soil containing limestone, dissolving the calcium carbonate in water...

www.reference.com/article/soil-affect-ph-water-c9a6164fc90dfbad

Pure distilled water has a pH of 7. The pH scale ranges from 0 to 14, with pH levels less than 7 considered acids and pH levels over 7 considered bases. A pH level of 7 is neutral.

www.reference.com/article/ph-distilled-water-6f51062063fdf3ba

Some pH levels of common substances include a pH of 7.0 for pure water, a pH of 2.0 for lemon juice and a pH of 11.0 for ammonia. Human blood has a pH of 7.4, tomatoes have a pH of 6.6, and vinegar has a pH of 2.2.

www.reference.com/article/ph-level-common-substances-20a6b21d1200d055

Red cabbage juice is a good indicator of pH because it contains flavin, a pigment molecule that changes colors according to the concentration of hydrogen ions in a solution. The juice is prepared by soaking chopped red c...

www.reference.com/science/red-cabbage-juice-good-indicator-ph-99d933cf42041da1