Amounts Of Susbtances Flashcards
Define a mole
Amount of a substance that contains the same number of elementary particles as 12g of carbon-12
Avagadro’s number
6.02 X10*23
Valency definition
Ionic charge
Coefficient
Large ratio number in front of a compound
Subscript
Small number at bottom of compound element to show how many atoms of that element there are
Hydrogen carbonate ion HCO3 charge
-1
Phosphate ion charge PO4
-3
What does ide indicate
2 elements bonded
Sodium sulfide
Eg. Na2S
What does age indicate
3 elements bonded
Sodium nitrate
Eg. NaNO3
What does ite indicate
1 less oxygen than ate
Sodium nitrite
NaNO2
How to find ionic equations
Split aq compounds into ions and cancel
Hydroxide ionic equation
H+(aq) + OH-(aq) —> H2O(l)
Carbonate ionic equation
H+(aq) + CO3*2-(aq) —> H2O(l) + CO2(g)
Hydrogen carbonate ionic equation
H+(aq) + HCO3-(aq) —> H2O(l) + CO2(g)
Ammonia ionic equation
H+(aq) + NH3(aq) —> NH4+(aq)