Alkali - A substance with a pH between 8 - 14, Acid - A substance with a pH between 1 - 6, Neutralisation - A chemical reaction where on adding an acid to an alkali you get a neutral substance, Litmus - Type of paper that can be used to determine whether a substance is an acid or an alkali, RedCabbage - A vegetable that can be turned into a natural indicator, Neutral - A substance with a pH of 7, Citric - Oranges contain this type of acid, Indicator - Something that can tell you if a substance is an acid or an alkali, Toothpaste - You use this alkali substance to brush your teeth,

Acids and Alkalis

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