Chemistry EOY Yr 9 Formula Masses Flashcards
1
Q
What is Relative Atomic Mass?
A
Relative Atomic Mass (Ar) is how many times heavier an atom of that element is compared to H)
2
Q
What is Formula Mass?
A
Formula Mass (Mr). Relative molecular mass: We can work out this value by adding together the Ar’s of all the elements in the compound