6.3 + 6.4 + 6.5 Flashcards
oxidation reduction reaction
transfer of electrons from one substance to another
oxidation
process of losing electrons
reduction
process of gaining electrons
what role does oxidation play in biological systems?
think hydrogen and oxygen
oxidation may involve loss of Hydrogen or
gain of Oxygen
what role does reduction play in biological systems?
think hydrogen and oxygen
reduction may involve gain of Hydrogen or
loss of Oxygen
does oxidation and reduction occur separately or simultaneously?
simultaneously
mole
counting unit that represents same # of 12 g of carbon in carbon-12
Avogadro’s number
6.02 x 10^23
a mole of a covalent compound contains _____molecules. (Avogadro’s number)
6.02 x 10^23
A mole of a ionic compound contains _____molecules. (Avogadro’s number)
6.02 x 10^23
How do you write the equality of Avogadro’s number?
6.02 x 10^23/1 mole
1 mole/6.02 x 10^23
How do you determine the mole of elements in a formula?
the subscript,
so F2= 2 moles of fluorine
molar mass
mass of one mole of a substance
what can you use to determine the molar mass of a substance?
the atomic mass
how many places (after decimal) do you use when writing molar mass?
tenths
.1g