as chem 0.0 / 5 ? Chemistryas termsASAQA Created by: maddieCreated on: 13-05-15 21:12 ATOMIC NUMBER number of protons in a nucleus 1 of 16 MASS NUMBER Total number of protons and neutrons in an atom 2 of 16 ISOTOPES Atoms with the same number of protons, but different number of neutrons 3 of 16 RELATIVE ATOMIC MASS the average mass of an atom of an element compared to 1/12th the mass if carbon12 4 of 16 RELATIVE MOLECULAR MASS average mass of one molecule compared to 1/12th of an atom of carbon 12 5 of 16 1st IONISATION ENERGY the enthalpy change when 1 mole of gaseous atoms forms 1 mole if gaseous ions, with a single positive charge 6 of 16 2nd IONISATION ENERGY The enthalpy change when 1 mole of gaseous ions with a single positive charge forms one mole of gaseous ions with a double positive charge 7 of 16 IONIC BOND the electrostatic force of attraction between oppositely charges ions formed by electron transfer 8 of 16 COVALENT BOND A shared pair of electron 9 of 16 METALLIC BOND The electrostatic force of attraction between the positive metal ions and delocalised electrons 10 of 16 EMPIRICAL FORMULA shows the simplest who number ratio of atoms of each element in the compound 11 of 16 MOLECULAR FORMULA the formula which shows the actual number of each type of atom 12 of 16 HOMOLOGOUS SERIES families of organic compound with same functional group and same general formula 13 of 16 FUNCTIONAL GROUP An atom/group of atoms which, when present in different molecules, causes them to have similar chemical properties 14 of 16 ISOMERISM when 2 (or more) compounds have the same molecular formula, but different in some way from one another 15 of 16 fuel a compound which releases heat energy when burnt 16 of 16
Comments
No comments have yet been made