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Learner Guide



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Chemical equations

During a chemical reaction, two or more substances will interact with one

another and change the arrangement of their atoms. The substances reacting

are called the reactants and the substances created are called the products.

All of the atoms present in the reactants will be in the products. This is called

conservation of mass, and means that no extra atoms are created or lost. Since

this is a chemical reaction,the products will be chemically bonded, which will

make them compounds.


In a reaction, where A and B are reactants and C and D are products, it

would be written like this:


In chemical reactions, the products may have properties that are completely

different to the original reactants; they may have different appearances,

reactivity, melting points etc.

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Related Topics

Introduction acids                                                       The-PH-scale

Neutralisation-reactions                                            Chemical-reactions



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