Chemistry Test #4 Flashcards
qualitative formulas tell us
which elements
quantitative formulas tell us
how many atoms of each element are present
Molecular Formulas
number of atoms of each element needed to form a covalently bonded substance
Empirical Formulas
lowest ratio; ALL IONIC COMPOUNDS
Structural Formulas
Location, and number of bonds between atoms
Condensed Structural Formula
similar to structural, but bonds are not shown, only implied: CH3CH2CH3
Conservation laws
mass, electric charge, energy
Gram Atomic Mass (GAM)
Mass, in grams, of 1 mole of an element
1 mole = ?
6.02*10^23 particles/ions/compounds/molecules/atoms
Mole-Mass Conversion Factor
GFM/1 mole = 1 mole/GFM
Gram Formula Mass (GFM)/Molar Mass
adding masses of moles together
Molar Volume
22.4L
Convert Mass to Moles
Divide by GFM
Convert Moles to Mass
Multiply by GFM
Moles to Molecules
Multiply by 6.02*10^23
Molecules to Moles
Divide by 6.02*10^23
Moles to Volume
Multiply by 22.4L
Volume to Moles
Divide by 22.4L
Percent Composition by Mass
(Mass of part)/(Mass of whole)*100
Synthesis Reaction
two or more products come together to form a single product
Decomposition Reactions
A compound is broken down into two or more smaller, less complex compounds/elements.
Single Replacement Reactions
AX+B –> A+BX
metals –> metals
nonmetals –> nonmetals
more active –> less active
Double Replacement Reactions
AX+BY –> BX+AY
