Resit F321 3.0 / 5 based on 1 rating ? ChemistryASOCR Created by: marcia pondayiCreated on: 27-04-13 19:04 Relative Isotopic Mass mass of an atom of an isotope compared with 1/12 the mass of an atom of carbon-12 1 of 27 Relative atomic mass weighted mean mass of an atom of element compared with 1/12 the mass of an atom of cabon-12 2 of 27 Relative Molecular mass Weighted mean mass of a molecule compared with 1/12 the mass of an atom of carbon-12 3 of 27 Relative Formula Mass weighted mean mass of a formula unit compared with 1/12 the mass of an atom of carbon-12 4 of 27 Amount of Substance quantity whose unit is the mole. used by chemists to cound atoms 5 of 27 Mole amount of substance containing containng as many partcles as there are carbon atoms n 12g of carbon-12 6 of 27 Empirical Formula simplest whole number ratio of atoms of each element present in a compound 7 of 27 Molecular formula actual number of atoms of each element in a molecule 8 of 27 Acid proton donor 9 of 27 Base Proton acceptor 10 of 27 Alkali type of base that dissolves in water forming OH-(aq) 11 of 27 Salt formed from an acid when H+ from acid has been replaced by metal ion or another positive ion. 12 of 27 Anhydrous Substance that contains no water molecules 13 of 27 Hydrated crystalline compound containing water molecules 14 of 27 Water of Crystallzation water moleculs that form an essential part of the crystalline structure of compound. 15 of 27 Oxidation loss of electons or an increase in oxidation number 16 of 27 Reduction gain in electrons or decrease in oxidation number 17 of 27 Redox reaction both reduction and ocdiation take place. 18 of 27 First ionisation energy Energy required to rmove one elctreon from each atom in one mole of gaseous atoms to form one mole of gaseous 1+ ions 19 of 27 Atomic Orbital region within an atom that can hold up to 2 electrons with oppsite spins 20 of 27 Ionic Bond electrostatic attraction between oppositely charged ions 21 of 27 Covalent Bond shared pair of electrons 22 of 27 Dative covalent bond shared pair of electons which has been provided by 1 of the bonding atomes 23 of 27 Electronegativity attraction of a bonded atom for the pair of electrons in a covalent bond 24 of 27 Van der waals attractive force between induced dipoles in neighbouring molecules 25 of 27 Metallic bonding electrostatic attraction between postive metal ions and delcolised elctrons 26 of 27 Periodicity regular periodic variation of properties of elements with atomic number and postion in the periodic table. 27 of 27
Comments
No comments have yet been made