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The pH scale. pH scale  This scale is used to determine the concentrat’n of H + ions versus OH - ions  Things that are neutral are pH 7, acids are below.

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Presentation on theme: "The pH scale. pH scale  This scale is used to determine the concentrat’n of H + ions versus OH - ions  Things that are neutral are pH 7, acids are below."— Presentation transcript:

1 The pH scale

2 pH scale  This scale is used to determine the concentrat’n of H + ions versus OH - ions  Things that are neutral are pH 7, acids are below 7 and bases are above 7

3 pH scale  As you go from pH 7 to pH 8 there are 10 times more OH - ions  Every level of the pH scale represents a ten fold (ten times) increase in the concentration of the H + or OH - ions

4 pH Scale  So how much more acidic is lemon juice with pH 2 than saliva pH 6?  !  How much more basic is bleach pH 13 than sea water pH 8

5 Finish in class work  Pg


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