click below
click below
Normal Size Small Size show me how
z chapter 5&6
Z chapter 5&6 chemistry
terms | definition |
---|---|
molecules are | all nonmetals |
holds molecules together | the covalent bond |
covalent bond | extra force of attraction that results from walence e- being shared between 2 nuclei |
bonding forces | always produce energy |
unbonding forces | always requires energy |
covalent bonds have | lower melting points, not usually solids, dont conduct electricity, called nolecules, non metals |
ionic bond | atractions between ions |
ion | any atom or group of atoms that carry a charge |
polar | positive and negative |
covalent bond | being shared equally |
polar covalent bond | electrons shared unequally |
2metals that r the same | covalent |
2 non metals that r different | polar covalent |
metal and nonmetal | ionic bond |
vserp | valence shell electron pair repulsion theory |
vserp concept | walence electrons in a molecule repel one another |
bond angle 2 electron groups | 180 |
bond angle 3 electron groups | 120 |
bond angle 4 electron groups | 109.5 |
bent pair | a loan pair of electron |
bent angle means | subtracting 2 degrees |
vectors same direction | add |
vectors opposite direction | subtract |