Basic chemistry help for students and teachers


Interactive Chemistry Worksheets for Students


Periodic table

Naming compounds

Basic formula

Simple compounds

Ionic compounds 1

Ionic compounds 2

Chemical suffixes

Old chemical names

Hydrocarbons - Alkanes

Alkanes, alkenes & alkynes

Alkanols to alkanoic acids


Common compounds

Common formula quiz

Acids, bases and salts

Covalent compounds

Printable worksheets


Copper sulfate is blue in color in its crystalline form and produces beautiful diamond shaped crystals.

The chemical formula of hydrous copper sulfate is CuSO4.5H2O which is often abbreviated to CuSO4 especially when balancing chemical equations.

Hydrous means 'with water'. Each of the pairs of copper sulfate ions in the crystal are surrounded by five water molecules.

Technically, CuSO4 is refers to anhydrous copper sulfate which is produced by heating blue copper sulfate. Anhydrous means "without water'. Anhydrous copper sulfate is gray-white in color and readily changes back to blue color by adding water.