AQA GCSE Chemistry - 1.3 Separating Mixtures Guaranteed Success

AQA GCSE Chemistry - 1.3 Separating Mixtures Guaranteed Success 1. What type of substance is made up of two or more components that are not chemically combined? Answer: Mixture. 2. What are three key characteristics of compounds? Answer: Compounds have a fixed composition, can only be separated through chemical reactions, and exhibit chemical bonds between atoms. 3. What are three key characteristics of mixtures? Answer: Mixtures do not have a fixed composition, can be easily separated using the properties of the components, and do not exhibit chemical bonds between atoms or compounds. 4. What are four methods used to separate mixtures? Answer: Filtration, crystallization, distillation, and chromatography. 5. When is filtration typically used? Answer: Filtration is often used to separate an insoluble solid from a liquid. 6. How does filtration work? Answer: Filtration involves pouring the mixture into a funnel with filter paper, allowing the liquid to pass through, and collecting the residue. 7. What is filtration typically used for? Answer: Filtration is used to separate solids from liquids. 8. When is crystallization typically used? Answer: Crystallization is often used to obtain a soluble solid from a liquid. 9. How does crystallization work? Answer: Crystallization involves boiling the mixture, evaporating the solvent, and then allowing the remaining mixture to cool and form crystals. 10. How can you tell if a solution is crystallizing? Answer: Crystals may form around the edges of the dish or appear on a glass rod when dipped into the solution. 11. When would you use simple distillation? Answer: Simple distillation is often used to separate a soluble solid from a liquid when you need to collect the liquid (solvent). 12. How does simple distillation work? Answer: Simple distillation involves heating the solution, condensing the vapor, and collecting the resulting liquid.