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Chem U4 bonding
periodic table ion bondings
| Question | Answer |
|---|---|
| Alkali metals are in what column | C1, very reactive |
| alkaline earth metals | C2, kinda reactive |
| Transition metals | C3-13 |
| Halogens | C17, not really reactive |
| Noble gases | C18, never reactive; has a full configuration |
| compound | when one or more atoms are bonded together |
| molecule | a compound with covalent bonds |
| formula unit | a compound that has ionic bonds |
| ionic bonds | - and + charges attract; transfer of electrons because unhappy elements lose/gain electrons |
| what type of metal is needed to make an ionic bond | metal+nonmental |
| covalent bonds | has no charge because of same charges; sharing electrons |
| what type of metal is needed to make a covalent bond | nonmental+nonmetal |
| diatomic molecules | elements that always exist as a molecule |
| define chemical formula | notation using symbols and #s to represent the composition of a substance |
| ex of chemical formula | H20 |
| molecular formula | shows the # and kinds of atoms actually present |
| ex of molecular formula | c5=c*c*c*c*c |
| empirical formula | gives the simplest between atoms (reduced form molecular formula) |
| ex of empirical formula | C10H22>>C5H11 |
| coefficeints | used to show the prescence of multiple compounds |
| ex of coefficient | 2H2O2 (is not H4O4) |
| "magic 7" | H2, N2, O2, F2, Cl2, Br2, I2 are the only elements that have a bond with itself (diatomic) |
| ammonium | NH4(+) |
| carbonate | Co3(2-) |
| chlorate | ClO3(-) |
| chromate | CrO4(-2) |
| hydrogen carbonate (bi) | HCO3(-) |
| hydroxide | OH(-) |
| nitrate | NO3(-) |
| Permanganate | MnO4(-) |
| phosphate | PO4(3-) |
| sulfate | SO4(2-) |
| silver | Ag1+ |
| zinc | Zn2+ |