AQA AS CHEMISTRY 7402 2 PAPER 2 ORGANIC AND PHYSICAL CHEMISTRY EXAMINATION TEST BANK FULLY UPDATED VIEW AHEAD PREPARATION FOR ORGANIC CHEMISTRY

AQA AS CHEMISTRY 7402 2 PAPER 2
ORGANIC AND PHYSICAL CHEMISTRY
EXAMINATION TEST BANK FULLY
UPDATED VIEW AHEAD PREPARATION
FOR ORGANIC CHEMISTRY

⩥ RAM (relative atomic mass).
Answer: Average mass of one atom compared to 1/12th the mass of a c-
12 atom
-


⩥ Ionisation energy.
Answer: The energy required to remove one mole of electrons from each
of one mole of gaseous atoms to form one mole of positive gaseous ions
(Endothermic)


⩥ Trends of Ionisation Energy.
Answer: Across a period, i.e increases as there is no increase in shielding
but an increase in atomic number
Decrease down a group due to increased shielding reducing the
electrostatic force of attraction from the nucleus

, ⩥ Drop at 2,3.
Answer: Al - Between groups 2,3... first electron in p orbital
- increase in shielding
- reduce forces of attraction
- less energy required to remove


⩥ Drop at 4,5.
Answer: P - between groups 4-5 there is a drop
- First electron pairing
- increased repulsion
- less energy is required to remove an eleccte


⩥ Isotopes.
Answer: Atoms with the same atomic number but a different mass
number
- do not react differently as same electron configuration


⩥ Factors Affecting I.E.
Answer: -Atomic Radius
-Shielding
-Effective Nuclear Charge
-Proton Number