Key Terms Flashcards
1
Q
What is amount of substance?
A
Amount if substance is a physical quantity (symbol n) which is measured in the unit mole (symbol mol)
2
Q
What is relative atomic mass?
A
Ar is the average mass of an element relative to 1/12 th of an atom of CARBON-12.
The values are relative so dont have units
3
Q
What is molar mass?
A
mass per mole of the substance g mol-1
4
Q
empirical formula
A
the simplest whole number ratio of the atoms of different elements in a compound
5
Q
oxidation number
A
the charge an atom would have if it were an ionic compound
6
Q
molecular formula
A
gives the actual number of atoms of each element in a molecule
