| A | B |
|---|
| metallic bond | many atoms sharing a single electron cloud |
| covalent bond | when atoms share valence electrons |
| ionic bond | atom giving and taking valence electrons |
| chemical bonding | attraction beween + & - charges holding atoms together |
| nucleus | source of positive charges |
| large electron cloud | source of negative charge, metallic bonds |
| shared valence electrons | source of negative charges, covalent bonds |
| positive ion | source of positive charge, ionic bond |
| negative ion | source of negative charge, ionic bond |
| nonmetal + nonmetal | types of atoms forming covalent bonds |
| metal + metal | types of atoms forming metallic bonds |
| nonmetal + metal | types of atoms forming ionic bonds |
| H | hydrogen |
| He | helium |
| C | Carbon |
| N | Nitrogen |
| O | Oxygen |
| Ne | Neon |
| Na | Sodium |
| Al | Aluminum |
| Cl | Chlorine |
| compound | two different atoms bonded together |
| molecule | two atoms bonded together, same or different |
| element | one type of atom, bonded or alone |
| atom | smallest particle of matter |
| ex. compound | H2O or 2-H2O |
| ex. molecule | H2 or H2O |
| ex. element | H or H2 |
| ex. atom | H or O |
| mono | prefix meaning one atom |
| di | prefix meaning two atoms |
| tri | prefix menaing three atoms |
| tetra | prefix meaning four atoms |
| penta | prefix meaning five atoms |
| single covalent bond | one pari of shared electrons |
| double covalent bond | two pairs of shared electrons |
| tripple covalent bond | three pairs of shared electrons |
| noble gases | do not react with other elements |
| 8 | number of electrons atoms want in valence |
