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The pH scale goes from 1-14 and normally is coloured from red to purple. Any chemical with a pH of 1-6(.9) is an acid, and any chemical with a pH of 7(.1)-14 is a base/alkali. A chemical with a pH of 7 is neutral, and this is mostly pure water and ionic salts. An example of an acid would be Hydrochloric acid, and an example of a base would be Sodium Hydroxide

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13y ago

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