GCSE Chemistry 0.0 / 5 ? ChemistryAnalysing substancesGCSEAQA Created by: OfficialSam_GCreated on: 24-06-18 19:32 An element is On its own 1 of 23 Compounds are Atoms that are chemically bonded together 2 of 23 Mixtures are Elements that are not chemically bonded together 3 of 23 If an atom gains electrons it becomes Negative 4 of 23 If an atom loses electrons it becomes Positive 5 of 23 Distillation is useful for Separating mixtures but keeping them both there by heating the mixture so it reaches its boiling point 6 of 23 Why do you add excess So it is fully reacted 7 of 23 What is filtration Separating an insoluble solid from a liquid 8 of 23 How would you separate ethanol from water Heat up the ethanol to its boiling point(78 degrees)) 9 of 23 Why wouldn't you heat above 78 degrees Water would evaporate as well 10 of 23 What is the retencion factor Distance traveled by solute divided by distance traveled by solvent 11 of 23 Covalent is Non metal to non metal 12 of 23 Ionic is Metal to non metal 13 of 23 Metallic is Metal to metal 14 of 23 Oxygen is what at room temperature Gas 15 of 23 What happens as a result of oxygen having weak intermolecular forces Oxygen can boil easily 16 of 23 Why does the reactivity of alkali metals increase going down the group This is because as you go down the element have more shells making it harder for the positive nucleus to reach the outer electrons 17 of 23 Compounds that contain ions are called Ionic compounds 18 of 23 Alloy definition Mixtures of elements 19 of 23 Metals consist of a Giant structure 20 of 23 The electrons in the outer shell of a metal are Delocalised(free to move around) 21 of 23 Ammonium nitrate is used as a Fertiliser 22 of 23 Sulfate salts are made from sulphuric acid 23 of 23
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