October 23rd marks Mole Day in the United States. Chemistry classes and chemistry enthusiasts celebrate this unofficial holiday with activities, cakes and jokes galore. Here’s what you need to know. A ...

Celebrated annually on October 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates "Avogadro's Number": 6.02 x 10 23. This number--called a mole--is a basic measuring unit in chemistry. Mole Day ...

It’s October 23, or Mole Day for chemistry enthusiasts. From 6:02 a.m. to 6:02 p.m. students and teachers celebrate their love of chemistry with Avogadro’s number — 6.02 x 10^23, a unit of measurement ...

A mole is a measurement of a ‘batch’ of particles. It is easier to describe the number of moles of a substance rather than the number of atoms as atoms are very small. Relative atomic mass is the ...

Both molarity and molality are measures of a chemical solution’s concentration. The primary difference between the two comes down to mass versus volume. The molality describes the moles of a solute in ...

Learn about how the reactivity series ranks metals by how readily they react. More reactive metals displace less reactive metals from their compounds and react with water. Redox, rusting and iron ...