Chemistry help for junior and senior high school students. Helping students grow in their understanding of basic chemical concepts through interactive activities, notes, games and drills.


Learn how to write chemical formula and balance chemical equations. Solve quantitative problems in chemistry involving the mole.


Learn about the applications and impacts of chemistry on society and the environment.


Create your own bingo sheets with the Chemical Bingo maker or balance equations online with the chemical equation balancer.


A chemical equation solver that balances the lot!


It can solve ..

  1. Complete neutral species and ionic equations.
  2. Half equations in acid or alkali solutions.
  3. Equations with more than one solution.
  4. Equations with non-stoichiometric chemical formula. eg. K3.99Fe(CN)6 and NaHBr1.997
  5. Complex chemical equations with multiple terms and brackets. eg. (NH4)3[P(Mo3O10)4]


Solve the following chemical equations. Just copy and paste then submit.

You may also include standard physical states, (s), (l), (g) & (aq) or leave them out.


A. Chemical equations - neutral species

  1. P2I4 + P4 + H2O = PH4I + H3PO4
  2. [Cr(N2H4CO)6]4[Cr(CN)6]3 + KMnO4 + H2SO4 = K2Cr2O7 + MnSO4 + CO2 + KNO3 + K2SO4 + H2O
  3. Cu(s) + HNO3(aq) → Cu(NO3)2(aq) + NO(g) + H2O(l)
  4. KMnO4 + C3H5(OH)3 = K2CO3 + Mn2O3 + CO2 + H2O


Molar Mass

Formula Calculator

Atar Calculator

An ATAR calculator for NSW HSC Chemistry students.

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