quiz 4 Flashcards
diatomic molecules
- molecules of 2 of the same element
- Have (Hydrogen) No (Nitrogen) Fear (Fluorine) Of (Oxygen) Ice (Iodine) Cold (Chlorine) Beer (Bromine)
law of constant composition
- various samples of the same chemical compound will have the same proportions of their constituent elements
- expressed by proust
Charge of Ag
+1
Charge of Zn
+2
Charge of Al
+3
Charge of Sc
+3
how to name an ionic binary compound
- regular name of first part, change second part to -ide
- ex: NaH -> Sodium Hydride, CaO -> Calcium Oxide
hydrate
- ionic compound that is bound to water molecules
- ex: MgSO4*7H2O -> magnesium sulfate heptahydrate
prefix for 1
mono
prefix for 2
di
prefix for 3
tri
prefix for 4
tetra
prefix for 5
penta
prefix for 6
hexa
prefix for 7
hepta
prefix for 8
octa
prefix for 9
nona
prefix for 10
deca
how to name a covalent compound
[prefix] [name of furthest left element] [prefix] [name of second element + -ide]
- ex: CO -> carbon monoxide, CO2 -> carbon dioxide, H20 -> dihydrogen monoxide
- note: if the first element is 1, omit the mono-
how to name a binary acid
- for binary w/ one element: hydro[base name of nonmetal + -ic] acid
- ex: HBr -> hydrobromic acid
how to name an oxyacid
- for acid w polyatomic ion
- i ATE something ICky
- sprITE is deliciOUS
- ex: HNO3 -> nitrate -> nitric acid
- ex: HNO2 -> nitrite -> nitrous acid
how does the atomic mass on the periodic table relate to mole?
the mass also indicates the element’s molar mass, aka amount of grams per 1 mole
ex: C has 12.01 g/mol
mass % composition
[mass of smaller thing]/[mass of larger thing] * 100
