C.4 EOY Flashcards
(9 cards)
1
Q
What is Ar
A
- Relative Atomic Mass
- Mean Mass of an element taking into account the abundance of isotopes
2
Q
What is Ar relative to
A
Carbon -12
3
Q
How is Ar calculated
A
Total mass of atoms/ total number of atoms
4
Q
What is Mr
A
- Relative Formula Mass
- Total number of the Atomic Masses
5
Q
What is a mole
A
- Relative atomic mass in grams
- 12g or carbon = 1 mol of carbon
6
Q
How many atoms does a mole contain?
A
- A mole contains the same amount of atoms
- 6.02 × 10^23
7
Q
How to calculate mol
A
- Mass = Mr Mol
- Mr Mole lives under the mole
8
Q
What is a balanced equation
A
- Balanced equation is when you have the same number of molecules on eachside
- H2+ Cl2 — 2HCl
9
Q
What can balanced equation be used for
A
To find the masses of reactants and products
