Chemistry Formulas

A chemical formula is an important part of the language of chemistry because it tells us something about the composition of an element or a compound. A formula can be simple as He (helium) or as complicated as C27H46O (cholesterol).

The Chemical Formulas provides information about the atomic composition of a substance, while an equation allows us to describe a chemical reaction using the names or formulas of the reactants and products involved in the process.


Writing Chemical Formulas

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Knowing the names of the elements and few basic rules allows us to name simple compounds given the chemical formula. we also can reverse the process. That is if we know the name of the compound, we should be able to write the chemical formula.
The rules for writing chemical formulas are
  1. Write the symbol of each element in the compound.
  2. If there is more than one atom of a particular element in the formula unit, write the number of atoms immediately after the symbol for the element.
The Procedure to Write a Chemical Reaction
  1. Identify the symbol of the cation and the anion
  2. Identify the charge of each symbol and place it in parenthesis above the symbol
  3. Balance the total positive and negative charge on the cation and anion. 
  4. Once the number of units of the cation and anion is determined those become the subscripts placed right after the symbol.

Students can also get help from our experts. Additional guidelines based on chemistry formulas are also provided below.
More topics in Chemistry Formulas
Atomic Mass Formula Molar Mass Formula
Chemical Formula Chemical Reaction Formula
Molarity Formula Molality Formula
Enthalpy Formula Entropy Formula
Ideal Gas Law Formula Boyle's Law Formula
Charles Law Formula Gay Lussac's Law Formula
Partial Pressure Formula Gibbs Free Energy Formula
Empirical Formula Molecular Formula
Structural Formula Dalton's Law Formula
Thermodynamics Formulas Rydberg Formula
Titration Formula Radioactive Decay Formula
Photosynthesis Formula Chemical Compound Formulas
Half Life Calculator Moles to Grams Formula
Grams to Moles Formula Normality Formula
STP Formula Equilibrium Constant Formula
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