Chemistry 2b Flashcards 3.0 / 5 based on 1 rating ? ChemistryGCSEAQA Created by: Anna HarveyCreated on: 19-01-13 13:09 Name a slow reaction. Rusting of iron. 1 of 23 Name a moderate speed reaction. Magnesium reacting with acid to make bubbles. 2 of 23 Name a fast reaction. An explosion. 3 of 23 What does the rate of reaction depend on? Temperature, concentration/pressure, catalyst, surface area/size. 4 of 23 What is a precipitate reaction? When the products made cloud the solution. 5 of 23 Sodium Thiosulphate and Hydrochloric acid produce what? A cloudy precipitate. 6 of 23 What is a good reaction for showing the effects of different catalysts. decomposition of Hydrogen Peroxide. 7 of 23 What is the equation for salt? Acid + Metal ------ Salt + hydrogen. 8 of 23 What does hydrochloric acid always produce? Chloride salts. 9 of 23 What does nitric acid produce when neutralised? Nitrate. 10 of 23 What are metal oxides and metal hydroxides? Bses. 11 of 23 What can ammonia be neutralised with to make fertiliser? HN03 12 of 23 What reaction do you do if you want to make an insoluble salt? Precipitation. 13 of 23 What is electrolysis? Passing an electric current through an ionic substance thats molten or in solution, to break down the elements. 14 of 23 What do electrolytes contain? Dissolved/molten free ions. 15 of 23 Positive ions gain and become...? Reduction. 16 of 23 Negative ions lose and become...? Oxidation. 17 of 23 What is always produced in electrolysis? Hydrogen. 18 of 23 Uses of chlorine? Bleach and pastics. 19 of 23 Uses of sodium hydroxide? Chemical industry, eg soap. 20 of 23 What is the name of aluminium ore? Bauxite? 21 of 23 What is left after bauxite is purified? A white powder. 22 of 23 What is cryolite used for? Lowering temperature (and costs) of purifying aluminium. 23 of 23
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