Practicals Chemistry AQA A-level Rated A+ Required Practical 1 - titration and making a standard solution Making a standard solution 1. weigh the required mass of solid using a sample bottle on a 2 dp balance. 2. transfer the solid into a beaker using distilled water to wash it out- preventing any solid remaining in the sample bottle. 3. reweigh the sample bottle and work out the difference. 4. Add 100cm3 of distilled water to the beaker to dissolve the solid (small volume of water) using a...

Test for carbonates - correct answer - add dilute HCL - it makes carbon dioxide test for carbon dioxide by bubbling it through lime water Test for ammonium ions - correct answer -add sodium hydroxide -warm the mixture -hover damp red litmus paper over it , if it turns blue the ions are present Test for sulphate ionz (SO4 2-) - correct answer - add dilute HCL - then add BaCl2 - BaSO4 is made which is insoluble in water so a white precipitate will be formed Test for Halides (Cl-,...

GCSE Edexcel Chemistry 2023 Exam Questions And Correct Answers Acid - ANSWER a substance with a PH of less than 7 a substance that forms H+ ions in water Acid Rain - ANSWER acidic rainwater that forms when sulphur dioxide dissolves in rain droplets Activation Energy - ANSWER the minimum amount of energy that reactant particles must have when they collide in order to react Addition Polymer - ANSWER a large molecule made from alkene monomers which bond together...