Chemical equation

A chemical equation is a way to predict the way that two or more chemicals will work together. Using what chemists know about the way chemicals act, we add the letter symbols together just like a math problem. In this way we can correctly guess if we will get a new chemical when we mix two or more chemicals together, and what that chemical will be.

Chemical equations are either worded or written using the elements' symbols, how much of the element and in what state (solid[s], liquid[l], gas[g]) it is in.

For example: An aqueous (liquid) solution of Sodium Chloride (NaCl[aq]) and another aqueous solution of Silver Nitrate (AgNO₃(aq)). These mixed together forms Sodium Nitrate (NaNO₃(aq)) and Silver Chloride (AgCl(s))

Which in symbols is:

NaCl(aq) + AgNO₃(aq) = NaNO₃(aq) + AgCl(s)

The solutions formed a solid named AgCl. This formation can be called a precipitate and the reaction between the two solutions a precipitation reaction, because the solid produced is not dissolved, whereas all the other products are dissolved.

Other websites

• Master of Chemical Equations - Real chemical equation balancer.
• Chemical Equation Balancer - An open source chemical equation balancer.
• Classic Chembalancer - Play Chembalancer, a free online game at FunBasedLearning.com, to learn how to balance equations
• Online calculator, determines of the coefficients of a chemical equation
• Online Chemical Equation Balancer Balances equation of any chemical reaction (full or half-cell) in one click.
• Balance chemical equations Teaches how to balance chemical equations
• Stoichiometry Add-In for Microsoft Excel for calculation of molecular weights, reaction coëfficients and stoichiometry.