Chem 1 definitions 0.0 / 5 ? ChemistryChem1ASAQA Created by: SophieScuphamCreated on: 15-01-15 12:13 Atomic number the number of protons in an atom 1 of 19 mass number number of protons and neutrons in an atom 2 of 19 isotope an atom with the same number of protons but a different number of neutrons 3 of 19 relative atomic mass the average mass of all isotopes of an element divided by 1/12 the mass of a c-12 atoms 4 of 19 first ionisation energy the energy needed to remove one electron 5 of 19 second ionisation energy the energy needed to remove one electron from a gaseous 1+ ion to make a gaseous 2+ ion 6 of 19 covalent bond a shared pair of electrons (one from each atom) 7 of 19 coordinate bond two electrons shared, both from the same atom 8 of 19 polar bond an equally shared electron pair 9 of 19 electronegativity the ability of an atom to attract electrons in a covalent bond to its nucleus 10 of 19 saturated contains the maximum number of hydrogen bonds 11 of 19 hydrocarbon a molecule only containing hydrogen and carbon 12 of 19 relative molecular mass the average mass of all molecules divided by 1/12 of the mass of a c-12 atom 13 of 19 molecular formula the actual number of atoms of each element in a molecule 14 of 19 empirical formula the simplist whole number ratio of the atoms of each element in a compound 15 of 19 structural isomer compounds with the same molecular formula but different structures 16 of 19 position isomer the functional groups are in different positions on the chain 17 of 19 chain isomer structural isomers with different carbon chains 18 of 19 functional group isomer structural isomer with different functional groups 19 of 19
Comments
No comments have yet been made