A Level Physical Chemistry AQA questions and correct answerwers 100% verified.

A Level Physical Chemistry AQA questions
and correct answerwers 100% verified.


1- CORRECT ANSWER.relative mass of a proton

1- CORRECT ANSWER.relative mass of a neutron

1/1840 - CORRECT ANSWER.relative mass of an electron

+1 - CORRECT ANSWER.relative charge of a proton

0- CORRECT ANSWER.relative charge of a neutron

-1 - CORRECT ANSWER.Relative charge of an electron

strong nuclear force - CORRECT ANSWER.How is the nucleus held together

nuclear force - CORRECT ANSWER.is the nuclear force or electrostatic force stronger

number of protons - CORRECT ANSWER.what does the atomic number represent

atomic number z - CORRECT ANSWER.the number of protons in an atom

number of protons and neutrons - CORRECT ANSWER.what does the mass number
represent
mass number (A) - CORRECT ANSWER.the number of nucleons in an atom

isotopes - CORRECT ANSWER.atoms of the same element that have different numbers of
neutrons

electrons - CORRECT ANSWER.what determines the reactivity of an atom

H1/H2/H3 - CORRECT ANSWER.hydrogen isotopes

, 2Cl35/Cl37 - CORRECT ANSWER.Chlorine isotopes 2 22222 2 2 2

2


Br79/Br81 - CORRECT ANSWER.Bromine isotopes 2 22222 2 2 2

2


C-14 - CORRECT ANSWER.Carbon isotope used for carbon dating
2 22222 2 2 2 2 2 2 2

2


2 - CORRECT ANSWER.Number of electrons the first shell can hold
2 22222 2 2 2 2 2 2 2 2 2

2


8 - CORRECT ANSWER.Number of electrons the second shell can hold
2 22222 2 2 2 2 2 2 2 2 2

2


18 - CORRECT ANSWER.Number of electrons the third shell can hold
2 22222 2 2 2 2 2 2 2 2 2

2


Relative Atomic Mass - CORRECT ANSWER.Ar 2 2 2 22222 2 2

2


Relative Atomic Mass - CORRECT ANSWER.average mass of 1 atom/1/12 of 1 atom of C-12
2 2 2 22222 2 2 2 2 2 2 2 2 2 2 2

2


determines the mass of separate atoms - 2 2 2 2 2 2


CORRECT ANSWER.What does the mass spectrometer do?
22222 2 2 2 2 2 2 2

2


Vacuum - CORRECT ANSWER.First step of the TOF Spectrometer
2 22222 2 2 2 2 2 2 2

2


Time of Flight Mass spectrometer - CORRECT ANSWER.TOF spectrometer full
2 2 2 2 2 22222 2 2 2 2

2


Kept under a high vacuum to avoid collisions with air molecules -
2 2 2 2 2 2 2 2 2 2 2


CORRECT ANSWER.Vacuum step
22222 2 2 2


(TOF)
2


2


Ionisation - CORRECT ANSWER.Second step of the TOF spectrometer
2 22222 2 2 2 2 2 2 2

2


Dissolved in solvent and passing through needle to a positive terminal with a high voltage p
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2


roducing positively charged droplets which have lost electrons -
2 2 2 2 2 2 2 2


CORRECT ANSWER.First method of ionisation (TOF)
22222 2 2 2 2 2 2
2


Molecules gain a proton - CORRECT ANSWER.Second method of ionisation (TOF)
2 2 2 2 22222 2 2 2 2 2 2

2


Acceleration - CORRECT ANSWER.Third step of the TOF spectrometer 2 22222 2 2 2 2 2 2 2

2


Positive ions attached to a negative plate so they accelerate towards it, faster
2 2 2 2 2 2 2 2 2 2 2 2 2


depending on their m/z ratio -
2
2 2 2 2 2


CORRECT ANSWER.Acceleration step (TOF)
22222 2 2 2


mass/charge - CORRECT ANSWER.m/z ratio 2 22222 2 2 2

2


Ion Drift - CORRECT ANSWER.Fourth step of the TOF spectrometer
2 2 22222 2 2 2 2 2 2 2

2


Ions pass through a hole in the negative plate, forming a beam to travel along the flight
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2


tube to the detector -
2
2 2 2 2


CORRECT ANSWER.Ion Drift step (TOF)
22222 2 2 2 2
2


Detection - CORRECT ANSWER.Fifth step of the TOF spectrometer
2 22222 2 2 2 2 2 2 2

2


Ions with highest velocities arrive at the detector first and flight times recorded. Ions pick
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2


up an electron which causes a current to flow so they are detected -
2
2 2 2 2 2 2 2 2 2 2 2 2 2


CORRECT ANSWER.Detection
22222 2


step (TOF)
2
2
2


Data Analaysis - CORRECT ANSWER.Sixth step of the TOF spectrometer
2 2 22222 2 2 2 2 2 2 2

, 2


signal from the detector goes to a computer which generates the mass spectrum -
2 2 2 2 2 2 2 2 2 2 2 2 2
2
2CORRECT ANSWER.Data Analysis step (TOF 2 2 2 2


)
2


Identify the abundance of different isotopes -
2 2 2 2 2 2


CORRECT ANSWER.What can the mass spectrometer
22222 2 2 2 2 2 2


do
2


2


abundance - CORRECT ANSWER.what does the height of a peak on a mass spectrum give
2 22222 2 2 2 2 2 2 2 2 2 2 2 2 2

2


m/z - CORRECT ANSWER.what does the horizontal axis on a mass spectrum give
2 22222 2 2 2 2 2 2 2 2 2 2 2

2


(abundance x m/z) + (abundance x m/z) all over total abundance -
2 2 2 2 2 2 2 2 2 2 2


CORRECT ANSWER.How to work
22222 2 2 2 2


out the Ar of an element from a mass spectrum
2
2 2 2 2 2 2 2 2 2
2


2n2 - 2


CORRECT ANSWER.General formula for the maximum number of electrons each energ
22222 2 2 2 2 2 2 2 2 2 2


y level
2 2


can hold
2
2
2


s,p,d,f - CORRECT ANSWER.four different atomic sub-levels
2 22222 2 2 2 2 2

2


s - CORRECT ANSWER.Which sub-levels does the first shell contain
2 22222 2 2 2 2 2 2 2 2

2


s,p - CORRECT ANSWER.Which sub-levels does the second shell contain
2 22222 2 2 2 2 2 2 2 2

2


s,p,d - CORRECT ANSWER.Which sub-levels does the third shell contain
2 22222 2 2 2 2 2 2 2 2

2


2 - CORRECT ANSWER.Number of electrons the s sub-level can hold
2 22222 2 2 2 2 2 2 2 2 2

2


6 - CORRECT ANSWER.Number of electrons the p sub-level can hold
2 22222 2 2 2 2 2 2 2 2 2

2


3 - CORRECT ANSWER.Maximum number of p-orbitals per shell
2 22222 2 2 2 2 2 2 2

2


10 - CORRECT ANSWER.Number of electrons the d sub-level can hold
2 22222 2 2 2 2 2 2 2 2 2

2


5 - CORRECT ANSWER.Maximum number of d-orbitals per shell
2 22222 2 2 2 2 2 2 2

2


s-orbital - CORRECT ANSWER. 2 22222 2 2

2


p-orbital - CORRECT ANSWER. 2 22222 2 2

2


Atomic orbital - 2 2


CORRECT ANSWER.A region of space around an atomic nucleus where there is a
22222 2 2 2 2 2 2 2 2 2 2 2 2 2


high probability (95%) of finding an electron
2
2 2 2 2 2 2
2


cloud of negative charge - CORRECT ANSWER.what are electrons if not a solid particle
2 2 2 2 22222 2 2 2 2 2 2 2 2 2

2


It has a lower energy (fills before the 3d) -
2 2 2 2 2 2 2 2 2


CORRECT ANSWER.what property does the 4d shell have
22222 2 2 2 2 2 2 2 2


compared to the 3d and what does this mean
2
2 2 2 2 2 2 2 2
2


opposite spins - CORRECT ANSWER.what must two electrons in the same orbital have
2 2 22222 2 2 2 2 2 2 2 2 2 2

2


First rule of allocating electrons to atomic orbitals -
2 2 2 2 2 2 2 2