Forensics Revision 5.0 / 5 based on 1 rating ? Applied ScienceForensic science GCSEAll boards Created by: elvenpixieCreated on: 22-04-15 16:50 Melting point When a solid turns into a liquid 1 of 32 Boiling point When a liquid turns into a gas 2 of 32 Organic Contains carbon (also a type of farming which does not use chemicals) 3 of 32 Formula for carbon dioxide Co2 4 of 32 Formula for water H2o 5 of 32 Formula for glucose C6H12O6 6 of 32 Formula for ethanol C2H5OH 7 of 32 Flame test Identifies metal ions (different metals go different colours) 8 of 32 Colour of sodium ions in a flame test? Orange 9 of 32 Colour of potassium in a flame test? Purple 10 of 32 Colour of calcium ions in a flame test? Red 11 of 32 Colour of copper ions in a flame test? Green 12 of 32 Soluable It will dissolve 13 of 32 Insoluable It will not dissolve 14 of 32 Filtering Used to remove solid particles to make a clear solution 15 of 32 Universal indicator Tests the pH/ To identify acids, alkali and whether it is neutral 16 of 32 Colour of acid with universal indicator? Red/Yellow/Orange 17 of 32 Colour of neutral with universal indicator? Green 18 of 32 Colour of an alkali with universal indicator? Blue/Purple 19 of 32 Precipitation reaction When a solid is formed from 2 liquids 20 of 32 Barium chloride Used to test for sulphate irons - It goes cloudy 21 of 32 Silver nitrate Used to test for chloride ions - It goes cloudy 22 of 32 Hydrochloric acid Used to test carbonate ions - It fizzes/makes bubbles 23 of 32 Lime water Used to test for carbon dioxide - makes it go cloudy 24 of 32 Potassium Dichromate Is used to test for ethanol (alcohol) colour change is from orange to green 25 of 32 Breathalyser Used to see if someone has been drinking/Has alcohol in their system 26 of 32 Electron Paricles in shells around the nucleus of an atom 27 of 32 Ionic bonding 1 atom gives electons to the other atom 28 of 32 Covalent bonding Atoms share electrons 29 of 32 Lattice Giant structure made up of lots of positive and negative ions 30 of 32 Type of compound with a high melting point Ionic because very strong attraction between ions - lots of enegy is needed to make the particles move apart to form a liquid 31 of 32 Type of compoud with a low melting point Covalent due to a weak attraction of molecules - not much energy is needed to make the particles to move apart to form a liquid 32 of 32
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