1.2 - The mole concept Flashcards
1
Q
avogadro’s constant
A
allows us to make comparison between chemical species (1 mole = 6.02 x 10^23)
2
Q
isotopes
A
atoms of the same element, same number of protons and diff number of neutrons
3
Q
two ways to calculate the amount of moles
A
1) (# of particles/ atomic mass) 2) (mass x avogadro’s constant)
4
Q
how to calculate # of particles
A
moles x atomic mass
5
Q
how to calculate mass (g)
A
moles/avogadro’s constant
6
Q
qualitative analysis
A
focuses on determining which elements are present in a compound
7
Q
quantitative analysis
A
enables chemists to determine the relative masses of elements
8
Q
empirical formula
A
the simplest whole number ratio of atoms of amount of each element present in a formula
9
Q
molecular formula
A
the original amount of elements before simplified to the empirical formula
10
Q
A
