Reacting Masses Flashcards
1
Q
What is Ar?
A
Relative atomic mass (the bigger number - protons and neutrons)
4
2
Q
What is Mr?
A
Relative formula mass
- adding all the Ar in a compound
E.g the Mr of MgCl2 = 95
3
Q
Why are chemical reactions always balanced?
A
No atoms are destroyed and no atoms are created
a product wouldn’t be a new atom, it would be a bond of 2 atoms
