Chemical formula


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


Formula calculators

Chemical formula calculator





Naming chemical compounds




Naming chemical symbols



Student lessons

Teacher resources

Hydrogen is a colorless gas that is less dense than air and is highly flammable.

The "pop test" is used to identify hydrogen gas in the school laboratory. A test tube mixture of hydrogen and air will pop when ignited producing water as a by-product. The chemical reaction is

Hydrogen + oxygen ==> Water + Energy

2H2 + O2 ==> 2H2O + Energy

The Hindenburg was a German airship that was filled with hydrogen gas. On landing in the USA in 1937 after a transalantic flight the passenger airship caught fire. Thirty six people died.

Sherbet Recipe
2   Teaspoons Sucrose C12H22O11
2   Teaspoons Icing Sugar
½ Teaspoon Tartaric Acid (CHOHCOOH)2
½ Teaspoon Sodium Hydrogen Carbonate NaHCO3(Sodium Bicarbonate)
     Mortar & Pestle
     Grind really well


Sherbet is a simple acid base reaction that produces carbon dioxide gas. As the ingredients dissolve in your saliva the acid and base components react with one another

Acid + carbonate ==> Salt + water + carbon dioixde