Chemistry 3.0 / 5 based on 1 rating ? ChemistryAll LevelsNone Created by: SophieCreated on: 20-02-13 11:33 It turns blue/purple when mixed with UI... What am I? Alkali 1 of 18 It turns red when mixed with UI... What am I? Acid 2 of 18 What is pure water? Neutral 3 of 18 Give 2 examples of acids found at home Vinegar and lemon juice 4 of 18 Give 2 examples of alakis found at home bleach, baking soda, indigestion tablets 5 of 18 Give 2 examples of acids found in the lab sulfuric acid and hydrochloric acid 6 of 18 give 2 examples of alkalis found in the lab sodium hydroxide and calcium hydroxide 7 of 18 I am a substance and I have hydroxide in my name... What am I? an alkali 8 of 18 What could plant extract be used for? an indicator e.g. red cabbage works as an indicator 9 of 18 What does pH paper turn in an acid, alkali and a neutral acid= red alkali= purple/blue green= neutral 10 of 18 Explain the pH scale... pH less than 7= acid - pH more than 7= alkali - pH 7= neutral. Scale is 0-14 11 of 18 What can be used to find the pH of a solution? pH paper or universal indicator 12 of 18 The pH of very acidic solutions? The pH of slightly acidic solutions Very acidic= 1-2 Slightly acidic= 3-6 13 of 18 The pH of very alkaline solutions? The pH of slightly alkaline solutions? Very alkaline= 12-14 Slightly alkaline= 8-11 14 of 18 What happens when an acid and an alkali cancel each other out? They are neutralised and have a pH of 7 15 of 18 What is made when hydrochloric acid is neutralised by sodium hydroxide? sodium chloride is made (table salt) 16 of 18 What is the word equation for neutralisation? acid + alkali > > salt + water 17 of 18 Uses of neutralisation... indigestion wasp stings bee stings acid soils 18 of 18
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