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Gelöschter Nutzer Der Nutzer hat seine Fachbereichs-Information gelöscht. Englisch 33 Karten

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  1. 1Ionic bondingThe strong electrostatic attraction between oppositely charged ions
  2. 2Ionic bond strengthThe amount of energy requried in one mole of solid to separate the ions to infinity (i.e. to the gas phase)
  3. 3Coordination numberThe coordination number of an ion the number of opppositely charged ions touching it
  4. 4IsoelectronicAtoms have the same number of electrons and hence, the same electron configuration
  5. 5CationPositive ion
  6. 6AnionNegative ion
  7. 7Bond lengthThe distance between nuclei of the two atoms that are covalently bonded together
  8. 8ElectronegativityThe ability of an atom to attract a bonding pair of electrons
  9. 9Polar covalent bondA type of covalent bond between two atoms where the bonding electrons are unequally distributed. Because of this, one atom carries a slight negative charge and the other a slight positive charge.
  10. 10Discrete (Simple) moleculeAn electrically neutral group of two or more atoms held together by chemical bonds
  11. 11Displaced (Full structural) formulaShows each bonding pair as a line drawn between the two atoms inolved
  12. 12Dative covalent bondA covalent bond in which both electrons in the bond are supplied by onlu one of the atoms involved in forming the bond
  13. 13Covalent bondThe strong electrostatic attraction between the nuclei of two atoms and the bonding pair of electrons.
  14. 14How is a covalent bond formed?By the overlap of two atomic orbitals each containing a single electron
  15. 15What determines the shape of a simple molecule/ion?The repulsion between the electron pairs that surround the central atom
  16. 16VSEPRValence Shell Electron Pair Repulsion Theory
  17. 17DipoleA dipole is said to exist when two charges of equal magnitude but opposite signs are separated by a small distance
  18. 18London forcesInstantaneous dipole-induced dipole interaction
  19. 19Permanent dipole interactionThe force resulting from the favourable or unfavourable interaction between two molecules that possess a permanent charge asymmetry
  20. 20Hydrogen bondAn intermolecular interaction (in which there is some evidence of bond formation) between a hydrogen atom of a molecule (or molecular fragment) bonded to an atom which is more electronegative than hydrogen and another atom in the same or a different molecule
  21. 21Intermolecular interactionsInteractions between molecules
  22. 22Van der Waals forceThe sum of all the intermolecular interactions between the molecules. The term includes London forces and permanent dipole-dipole interactions.
  23. 23Non-polar moleculeA molecule in which individual dipoles cancel each other out, resulting in no net dipole
  24. 24Polar moleculeA molecule in which individual dipoles reinforce each other out, resulting in an overall dipole
  25. 25Trend in boiling temperatures of alkanesIncreasing with increasing chain length
  26. 26Volatile liquidOne with a low boiling temperature
  27. 27Anomalous properties of water resulting from hydrogen bondingRelatively high melting and boiling points & ice is less dense than water
  28. 28Effect of branching in the carbon chain on the boiling temperature of alkanesBranched chain alkanes have lower boiling temperatures than their unbranched isomers
  29. 29Enthalpy of vaporisationA measure of the amount of energy that is required to completely separate the molecules of a liquid and convert it into a gas at the same temperature
  30. 30Test for unsaturation in moleculesBromine turns from yellow to colourless in unsaturated solutions
  31. 31AlkenesA homologous series of hydrocarbons with the general formula \(C_nH_{2n+2}\)
  32. 32AlcoholsA homologous series of hydrocarbons with the general formula \(C_nH_{2n+1}OH\)
  33. 33Hydration energyThe energy released when an ion is surrouned by water molecules

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Der Nutzer hat seine Fachbereichs-Information gelöscht. Karteikarten am Flashcards, erstellt von Gelöschter Nutzer am 21/08/2017.
Erstellt von
Gelöschter Nutzer · Aug 2017
Aktualisiert
21 Aug 2017
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16
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  • Erstellt von Niamh Ryan · 21 Aug 2017
  • Kopiert von Niamh Ryan · 21 Aug 2017
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