This outlines one way to carry out the practical using copper(II) oxide powder and dilute sulfuric acid. Eye protection must be worn. 1. Add some dilute sulfuric acid to a small beaker. 2. Add some ...

Understanding the nature of pH has bedeviled beginning (and not-so-beginning) chemistry students for nearly as long as chemistry has had students. It all seems so arbitrary, being the base-10 log of ...

Q: My wife and I have an outdoor patio built with colored, precast-concrete paving blocks. It doesn't take long each year for black mold and mildew to start growing on it. We also have an issue with ...

Or copper (II) sulphate, the staple of every child's chemistry set and the source of that most wondrous of junior school experiments, growing deep blue crystals from a saturated solution. This week in ...

“Is this a happy caterpillar? A jolly orange eel? No way! It is a 0.9 mm wide iron wire immersed in a drop of copper(II) sulfate solution on a glass slide,” writes James Maynard, a lecture ...