2) Amount of Substance Flashcards
1
Q
What is meant by the term the mole?
A
The amount of substance that contains the same number of particles as there are atoms in 12g of carbon-12.
2
Q
Use this card to test ‘Mole Equations’ knowledge.
A
Rate knowledge 1-5.
3
Q
Define empirical formula.
A
The simplest whole number ratio of atoms of each element present in a compound.
4
Q
Define molecular formula.
A
The number and type of atoms of each element in a molecular.
5
Q
What are the assumptions for an Ideal Gas?
A
- Random motion.
- Elastic collisions.
- Negligible size.
- No intermolecular forces.
6
Q
Why may it be difficult for all the theoretical yield to always be achieved?
A
- The reaction may not have gone to completion.
- Side reactions may have taken place alongside the main reaction.
7
Q
What term is given to the ‘•x H2O’ part of a formula?
A
The number of waters of crystallisation.
