Salts 4.5 / 5 based on 5 ratings ? ChemistryAcids, bases and saltsGCSEAQA Created by: Harry TannerCreated on: 29-11-12 22:44 What is a salt? A salt is a word used to describe many different ionic compounds 1 of 16 How are soluble salts formed? By reacting an acid with either a metal, insoluble base or alkali 2 of 16 Name a vigorous reaction between a metal and an acid? What are the products? Potassium + Hydrochloric Acid = Potassium Chloride + Hydrogen 3 of 16 What are bases? Bases are the oxides and hydroxides of metals. 4 of 16 What are soluble bases? Soluble bases are called alkalis 5 of 16 Why is preparing salts for transition metals less straightforward? Their oxides and hydroxides are insoluble 6 of 16 What is the general equation for the reaction of an acid and a base? Acid + Base = Salt + Water 7 of 16 What is the general equation for an acid and an alkali? Acid + Alkali = Salt + Water 8 of 16 In an acid/alkali reaction - what use do indicators have? They show when the reaction is complete. 9 of 16 How can precipitation of insoluble salts be useful? For removing unwanted ions from drinking water. 10 of 16 What is precipitation of insoluble salts? When a solid substance is formed from insoluble ions. 11 of 16 What happens to acids and alkalis in water? They dissociate to produce H+ (acid) ions or OH- ions in solution. 12 of 16 What are the products of: Acid + Alkaline Hydroxide Solution? A neutral salt + water 13 of 16 Give an example of a neutralisation reaction Hydrochloric Acid + Potassium Hydroxide = Potassium Chloride + Water 14 of 16 Why is ammonia useful? It is used in agriculture to create fertilisers. 15 of 16 When are nitrates an issue? When they enter rivers and streams and contaminate drinking water. 16 of 16
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