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...Igcse chemistry dr green s pre exam checklist section principles of i have made done topic revision questions on notes cards a states matter b atoms c atomic structure d relative formula masses and molar volumes gases e chemical formulae equations f ionic compounds g covalent substances h metallic crystals the elements periodic table group lithium sodium potassium chlorine bromine iodine oxygen oxides hydrogen water reactivity series tests for ions organic introduction alkanes alkenes ethanol physical acids alkalis salts energetics heating changes rates reaction equilibria reversible in industry extraction uses metals crude oil synthetic polymers industrial manufacture chemicals www thescienceteacher co uk resources science teachers who like to think draw arrangement particles solid liquids gas what is difference between evaporation sublimation describe motion would happen beaker if crystal manganate was placed into it left dissolve define term diffusion molecule how many are methane w...