Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

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 ...

When writing chemical equations for reversible reactions, the usual one-way arrow is not used. Instead, two arrows are used, each with just half an arrowhead (⇌). The top one points right, and the ...

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 ...

The reactivity of metals can be determined using displacement reactions. In a displacement reaction a more reactive metal will displace a less reactive metal from its compound. For example, magnesium ...