C4 - The Periodic Table 0.0 / 5 ? ChemistryThe Periodic TableGCSEOCR Created by: AlirnaCreated on: 12-03-14 19:37 Isotope Elements with the save atomic number but different mass numbers 1 of 24 Ionic bonding Making an atom stable by transferring electrons 2 of 24 Do metals gain or lose electrons during ionic bonding? Lose - Forms positive ion 3 of 24 Do non metals gain or lose electrons during ionic bonding? Gain - Forms negative ion 4 of 24 Giant ionic lattice When positive ions have a strong electrostatic attraction to negative ions so exist as solids 5 of 24 Covalent bonding When non metals share electron pairs between atoms 6 of 24 Group number The number of electrons in the outer shell of the atom 7 of 24 Period number The amount of occupied shells the atom has 8 of 24 Oxidation When electrons are lost 9 of 24 Reduction When electrons are gained 10 of 24 Flame test for lithium Red flame 11 of 24 Flame test for sodium Yellow flame 12 of 24 Flame test for potassium Lilac flame 13 of 24 Group 1 elements Alkali metals 14 of 24 Group 7 elements Halogens 15 of 24 What are transition elements used for? Catalysts 16 of 24 Thermal decompostion When a metal carbonate is broken down by heat to form a metal oxide and carbon dioxide 17 of 24 Precipitation reaction When two solutions react to from a chemical that does not dissolve 18 of 24 Metallic bond a strong electrostatic force of attraction between positive metal ions and delocalised electrons 19 of 24 Why does a metal conduct electricity? The delocalised electrons can move easily 20 of 24 Superconductor A material that conducts electricity with little or no resistance 21 of 24 Sedimentation When chemicals are added to water to make solid particles and bacteria settle out 22 of 24 Filtration When a layer of sand on gravel filters out fine particles from water 23 of 24 Chlorination When chlorine is added to water to kill microbes 24 of 24
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