Chemical Equations (1)

Chemistry

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A simple and accurate way to describe chemical reactions

Through chemical equations

Way to Write Chemical Equations (1)

Chemical equations can be written in the form of words or using chemical formulae

Way to Write Chemical Equations (2)

The starting substances or reactants are written on the left-hand side of the equation

Way to Write Chemical Equations (3)

The new substances formed or products are written on the right-hand side of the equation1

Way to Write Chemical Equations (4)

The arrow ‘→’ means ‘produces’

Way to Write Chemical Equations (5)

The physical state of each substance, whether solid(s), liquid(l), gas(g) or aqueous solution(aq) is usually indicated in a chemical equation

Way to Write Chemical Equations (6)

Chemical equations need to be balanced

Way to Write Chemical Equations (7)

Based on the law of conservation of mass, matter can neither be created nor destroyed

Way to Write Chemical Equations (8)

The number of atoms of each element on both sides of the equation must be the same

The examples of writing the chemical equation for the reaction between hydrogen and oxygen (1)

Write the equation in words: Hydrogen + Oxygen → Water

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