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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 |