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Learner Guide

 

The PH scale


The pH scale is a measure of how acidic or basic a solution is. It ranges from

0-14, with zero being the most acidic and 14 being the most alkaline. 7, being 

exactly in the middle, is what would be termed as neutral.

 

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Any number less than seven is considered to be acidic – the lower the 

number,the more acidic the substance. 4 -6 would be considered ‘weakly 

acidic’. Any number higher than seven is considered to be alkaline – the

higher the number, the more alkaline the substance. 8-10 would be

considered ‘weakly alkaline’.

 

Substances which are very strongly acidic or alkaline tend to be reactive and

can be even cause chemical burns, if not handled with care.

 


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Related Topics


Chemical-equations                                                   Introduction acids

Neutralisation-reactions                                          Chemical-reactions



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