Definitions Flashcards
1
Q
relative isotopic mass
A
mass of an atom of an isotope compared to 1/12th mass of carbon-12
2
Q
relative atomic mass
A
weighted mean mass of an atom of an element compared to 1/12 mass of carbon-12
3
Q
relative molecular mass
A
the sum total of the relative atomic masses of each atom making up a molecule, taking into account the numbers of each atom
4
Q
relative formula mass
A
the sum total of the relative atomic masses of each atom making up a formula unit i.e. NaCl or OH-
5
Q
empirical formula
A
the smallest whole number ratio of atoms of each element present in a compound
6
Q
le chateliers principle
A
if a change is made to a system in dynamic equilibrium, the position of equilibrium moves to counteract this change
7
Q
alkane bond angle
A
109.5
8
Q
alkene bond angle
A
120
