10/22/25, 7:07 AM AQA A LEVEL CHEMISTRY PAPER 1 EXAM 2025 (Actual Exam) Questions with verified Answers (Latest Update 2025) UPDATE!…
AQA A LEVEL CHEMISTRY PAPER 1 EXAM 2025
(Actual Exam) Questions with verified Answers
(Latest Update 2025) UPDATE!!
Save
Practice questions for this set
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Terms in this set (84)
1) ionisation
2) acceleration
TOF steps 3) ion drift
4) detection
5) analysis
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, 10/22/25, 7:07 AM AQA A LEVEL CHEMISTRY PAPER 1 EXAM 2025 (Actual Exam) Questions with verified Answers (Latest Update 2025) UPDATE!…
Sample vaporised and electron gun fires high energy
electrons at it which knock off 1 electron from each
Electron impact particle, making them 1+ ions
NB- can knock off more than one e or break
molecular ion
Sample dissolved in volatile solvent then injected
through needle to give fine mist which is attached to
positive end of high voltage power supply, particles
electrospray ionization
gain proton
NB- Mr of substance is actually one less than shown
due to extra H+
positive ions accelerated using electric field so they
Acceleration (TOF)
all have the same kinetic energy
particles with small mass have larger velocity do ions
Ion drift (TOF) start to separate with lightest ions reaching detector
first
positive ions hit negatively charged plate and gain an
Detection (TOF) electron which forms a current, the larger the current
the higher the abundance
-computer uses data to produce mass spectrum
which shows mass m / charge z ratio
Analysis (TOF) -mr or ar is furthest right peak (small peaks larger than
mr are due to isotopes)
-may be large peaks at lower mr due to fragmentation
Property of electron (CW or ACW)
Electron spin
Represented by up and down arrows
Defined regions of space around nucleus where
Orbitals electrons most likely to be found, each orbital holds 2
electrons
Electrons prefer to occupy orbitals on their own and
Hund's Rule only pair up when no empty or bait ask of same
energy are available
Electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10
https://quizlet.com/1096668466/aqa-a-level-chemistry-paper-1-exam-2025-actual-exam-questions-with-verified-answers-latest-update-2025-update-fla… 2/8
AQA A LEVEL CHEMISTRY PAPER 1 EXAM 2025
(Actual Exam) Questions with verified Answers
(Latest Update 2025) UPDATE!!
Save
Practice questions for this set
Learn 1 /7 Study with Learn
Terms in this set (84)
1) ionisation
2) acceleration
TOF steps 3) ion drift
4) detection
5) analysis
https://quizlet.com/1096668466/aqa-a-level-chemistry-paper-1-exam-2025-actual-exam-questions-with-verified-answers-latest-update-2025-update-fla… 1/8
, 10/22/25, 7:07 AM AQA A LEVEL CHEMISTRY PAPER 1 EXAM 2025 (Actual Exam) Questions with verified Answers (Latest Update 2025) UPDATE!…
Sample vaporised and electron gun fires high energy
electrons at it which knock off 1 electron from each
Electron impact particle, making them 1+ ions
NB- can knock off more than one e or break
molecular ion
Sample dissolved in volatile solvent then injected
through needle to give fine mist which is attached to
positive end of high voltage power supply, particles
electrospray ionization
gain proton
NB- Mr of substance is actually one less than shown
due to extra H+
positive ions accelerated using electric field so they
Acceleration (TOF)
all have the same kinetic energy
particles with small mass have larger velocity do ions
Ion drift (TOF) start to separate with lightest ions reaching detector
first
positive ions hit negatively charged plate and gain an
Detection (TOF) electron which forms a current, the larger the current
the higher the abundance
-computer uses data to produce mass spectrum
which shows mass m / charge z ratio
Analysis (TOF) -mr or ar is furthest right peak (small peaks larger than
mr are due to isotopes)
-may be large peaks at lower mr due to fragmentation
Property of electron (CW or ACW)
Electron spin
Represented by up and down arrows
Defined regions of space around nucleus where
Orbitals electrons most likely to be found, each orbital holds 2
electrons
Electrons prefer to occupy orbitals on their own and
Hund's Rule only pair up when no empty or bait ask of same
energy are available
Electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10
https://quizlet.com/1096668466/aqa-a-level-chemistry-paper-1-exam-2025-actual-exam-questions-with-verified-answers-latest-update-2025-update-fla… 2/8
