Chemistry

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Across
  1. 3. Arrangement of electrons in orbitals
  2. 5. attractive force that results from the electrostatic attraction between an ion and a neutral molecule that has a dipole.
  3. 8. Distance from nucleus to atom's outer shell
  4. 10. Average atomic masses of all isotopes of an element compared to Carbon 12
  5. 13. Charged atom
  6. 14. electronegativity less than 0,5
  7. 16. Measure of ability of atom in molecule to attract shared electrons
  8. 17. Atoms of the same element with equal number of protons but different neutrons or mass
  9. 18. smallest part of an element
  10. 20. Energy required to remove 1 mol of electrons from gaseous atom to form 1 mol of gaseous ions
  11. 22. force of attraction between the free-moving (delocalised) electrons and positive metal ions.
  12. 24. electronegativity greater than 0,5
  13. 25. weak force of attraction between molecules, ions or atoms.
  14. 26. Arrangement of electrons in shells
  15. 27. uneven distribution of the electron cloud within a molecule.
  16. 28. Temperature at which substance changes from solid to liquid
Down
  1. 1. Amount of energy given off when neutral atoms in gaseous stage gains electrons to form gaseous anion
  2. 2. temporary attractive force that results when the electrons in two adjacent atoms or molecules repel from each other resulting in electrons being pushed to one side in one of the atoms thereby forming partial positive and negative charges.
  3. 4. Bond between atoms in molecules
  4. 6. Specific patterns in properties of chemical elements that are revealed in the periodic table
  5. 7. Temperature at which the pressure exerted by the surroundings upon a liquid is equal to the pressure exerted by the vapour of the liquid
  6. 9. Total number of electrons on the outer shell
  7. 11. sharing of at least one pair of electrons by two non-metal atoms.
  8. 12. attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.
  9. 15. Consists of molecules in which the atoms are joined by strong covalent bonds
  10. 17. Transfer of electrons from metal to non-metal and subsequent electrostractiv attraction
  11. 19. Number of electrons an atom can gain or lose
  12. 21. Different forms of an element
  13. 23. Distace from nucleus of ion to valence shell