Acids and Bases.

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Presentation transcript:

Acids and Bases

Characteristics Of Acids Acids can be characterized by: A sour taste. It turns blue litmus paper red It tastes sour. Try drinking lemon juice (citric acid)

Characteristics of Bases A Base is characterized by: A bitter taste. (Milk of Magnesia) It feels slippery. (Soapy Water) It turns Red Litmus Blue. 4. It feels chalky

The ph scale measure how acidic or basic a solution is 7 8 9 10 11 12 13 3 4 5 6 2 14 1 1 1 2 2 3 3 4 4 5 5 6 6 7 8 9 9 10 10 11 11 12 12 13 14 Strong Acid Weak Acid Neutral Weak Alkali Strong Alkali The ph scale measure how acidic or basic a solution is

Identifying Acids and Bases Acids have a ph from 0-7 Lower pH value indicates a stronger acid. Bases have a pH from 7-14 Higher pH value indicates a stronger base.

pH Scale 7 Acid Base 14 Acidic Neutral Basic [H+] pH 10-14 14 10-13 13 10-14 14 10-13 13 10-12 12 10-11 11 10-10 10 10-9 9 10-8 8 10-7 7 10-6 6 10-5 5 10-4 4 10-3 3 10-2 2 10-1 1 100 0 1 M NaOH Ammonia (household cleaner) Blood Pure wate Milk Vinegar Lemon juice Stomach acid 1 M HCl Acidic Neutral Basic Acid Base 7 14 pH Scale “

Did we Miss something?? What happens when the pH of a substance is 7? Ans: A pH level of 7 indicates a Neutral Substance i.e: Water!