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vocab chapter 4
| Question | Answer |
|---|---|
| chemical bonds | is a force that holds two or more atoms together |
| valence electrons | is an outermost electron of an atom that participates in chemical bonding |
| electron dot diagram | a model that represents valence electrons in a atom as dots around the elements chemical symbol |
| covalent bond | is a chemical bond formed when two atoms share one or more pairs of valence electrons |
| polar molecule | a molecule that has a partical positive end and a partial negitive end because of unequal sharing of electrons |
| molecule | is a group of atoms held together by covalent bonding that acts as an independent unit |
| chemical formula | is a group of chemical symbols and numbers that represents the elements and the number off atoms of each element and number of atoms of eah element that makes up a compound |
| ion | is an atom that is no longer electrically neutral because it has lost or gained valence electrons |
| ionic bond | the attraction between positively and negatively charged ions in an ionic coupound |
| metallic bond | is a bond formed when many metals atoms share their pooled valence electron |