Calculations Flashcards
1
Q
Relative formulae mass/molar mass(Mr)
A
Average masss if a compound or molecule compares to 1/12th of an atom of carbon-12. found by adding together the relative at mic masses of its constituent atoms
2
Q
Mole
A
Amount of substance that contains 6x10 to the power of 23 particles
3
Q
Valency
A
Number of electrons needed to be gained/lost to get a full outer shell
4
Q
Aqueous
A
Dissolved in water
5
Q
Empirical formula
A
Smallest whole number ratio of atoms of each element in compound
6
Q
Molecular formula
A
Actual number of atoms of each element in one molecule
7
Q
Water of crystallisation
A
Water molecules trapped in a solid crystal when it forms e.g. CuSO4.5H2O
8
Q
Yield
A
Amount of product made
