Daily Archives: January 27, 2017


Cobalt(II) chloride may appear either pink or blue in solution, depending on which ion is formed. (Chemicalinterest)
This color change chemistry project gives you a liquid that fluctuates between pink and blue as the temperature changes. In essence, it’s a color change thermometer. What You Need beaker or attractive clear container 3 g cobalt(II) chloride hexahydrate (also known as cobaltous chloride hydrate) 500 ml alcohol Prepare the […]

Make a Color Change Liquid Thermometer



Pre-Columbian Peruvian mummy. (Emmanuelm, Creative Commons)
If you’ve ever seen a mummy in a museum, you might have thought the ancients went a little overboard with henna and other red dyes. While people have colored their hair practically forever, it’s more likely what you’re seeing is the change in hair color that occurs after a person […]

Your Hair Color Changes After You Die