This site aims to help you find out information on the chemical formula of many common chemicals and household substances. Chemical symbols from the periodic table are used for the individual elements. eg. H for hydrogen, O for oxygen and N for nitrogen. These symbols are used to construct the chemical formula of a substance. Eg. water, H2O and ammonia, NH3
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Common chemical symbols of the first 20 elements. Test yourself
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More formulas. Open and click on a compound to finds its formula. See if you are correct.
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Formula Table
|
Na+
|
K+
|
Mg2+
|
Ca2+
|
Al3+
|
|
|---|---|---|---|---|---|
| NaCl sodium chloride |
KCl potassium chloride |
MgCl2 magnesium chloride |
CaCl2 calcium chloride |
AlCl3 aluminum chloride |
Cl-
|
| Na2O sodium oxide |
K2O potassium oxide |
MgO magnesium oxide |
CaO calcium oxide |
Al2O3 aluminum oxide |
O2-
|
| NaNO3 sodium nitrate |
KNO3 potassium nitrate |
Mg(NO3)2 magnesium nitrate |
Ca(NO3)2 calcium nitrate |
Al(NO3)3 aluminium nitrate |
NO3-
|
| Na2SO4 sodium sulfate |
K2SO4 potassium sulfate |
MgSO4 magnesium sulfate |
CaSO4 calcium sulfate |
Al2(SO4)3 aluminum sulfate |
SO42-
|
| Na3PO4 sodium phosphate |
K3PO4 potassium phosphate |
Mg3(PO4)2 magnesium phosphate |
Ca3(PO4)2 calcium phosphate |
AlPO4 aluminum phosphate |
PO43-
|
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