Chemistry: Year 9 Term 1: Mixtures, Compounds & Separation 5.0 / 5 based on 2 ratings ? ChemistryAtoms and compoundsGCSEAQA Created by: Charlotte HerondaleCreated on: 20-10-17 10:48 What is a mixture? (1) A combination of elements not chemically bonded 1 of 8 What is a compound ? (1) A combination of element that are chemically bonded 2 of 8 What is a molecule? (1) Several atom sets of one element joined together 3 of 8 Why could a mixture of sulfur and iron be separated by a magnet but not a compound? (2) The magnet could pull the bits of iron out of the sulfur powder but coukd not separated the compound 4 of 8 What does crystallisation separate? What is this combination called? (2) A solid dissolved in a liquid (an aqueous solution) 5 of 8 What are the steps of crystallisation? (3) 1) Warm so solvent evaporates, 2) Cool solution left, 3) Crystals grow 6 of 8 A fast rate of cooling makes what size crystals? (1) Small 7 of 8 A slow rate of cooling makes what size crystals? (1) Large 8 of 8
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