Ch. 3 Flashcards
What is the SI unit of length
meters (m)
What is the SI unit of weight
Kilogram (kg)
What is the SI unit of time
Seconds (s)
What is the SI unit of the amount of a substance
mole (mol)
What is the SI unit of temp
Kelvin (K)
What is the SI unit of electric current
Ampere (A)
What is the SI unit of speed
m/s
What is the SI unit of energy
joule m^2/s^2 *Kg
what is 1m^3 equal to in liters
1000L
what is molarity
of moles divided by # of liters of solution
what is nano
10^-9 (n)
what is micro
10^-6 (µ)
what is milli
10^-3 (m)
what is centi
10^-2 (c)
what is kilo
10^3 (k)
what is mega
10^6 (M)
what is density? what is the units? what is the conversion of both units?
density is mass over volume. the units are usually g/cm^3 or Kg/cm^3. you can convert between these two units by dividing by 1000 (kg to g) or multiplying by 1000 (g to kg)
what is empirical formula
smallest ratio of atoms
molar mass is what unit?
grams on molecular weight
what are oxidative numbers/states
they are meant to indicate how the atoms “ownership” of its ve- change when it forms a compound
what are the first three rules of oxidation states?
- OS of any element by itself is 0
- the sum of OS must be 0 if its not an ion
- group one metals have +1 OS, group two metals have +2 OS
what are the last four rules of oxidation states?
- fluorine has -1 OS
- H has +1 OS when bound to something more EN but has -1 OS with an atom less EN. 0 when bounded with oxygen
- oxygen has -2 OS
- halogens has -1 OS
what is important to note when finding OS
the sum of OS must be equal to the number of atoms present in compound unless its an ion
find OS of NO3- and HNO2
NO3- has 3 O=-6 and one N=5 making overall OS=-1
HNO2 has 1 H=+1 (because N is more EN) , 1 N=+3, and 2 O= -4
what is an angstrom? what is an order of magnitude?
angstrom is ten to the -10th power. order of magnitude is a factor of ten.
formula of ammonium? hydronium?
ammonium= NH4+
hydronium=H3O+
formula of acetate? bicarbonate?
acetate= CH3CO2-
bicarbonate= HCO3-
what is important to note about a limiting reagent
its the molecule that gets consumed first and its always a reactant
formula of nitrate? nitrite?
nitrate= NO3-
nitrite=NO2-
formula of Perchlorate? Cyanide?
Perchlorate= ClO4-
Cyanide= CN-
formula for sulfate? sulfite?
sulfate= SO4^2-
Sulfite= SO3^2-
formula for carbonate? phosphate?
carbonate= CO3^2-
phosphate= PO4^3-
