3/25/26, 6:32 PM AQA Chemistry As Level Paper 1 Exam Questions and answers with verified Answers (Latest Update 2026) UPDATE!! Flashcards |…
AQA Chemistry As Level Paper 1 Exam Questions
and answers with verified Answers (Latest Update
2026) UPDATE!!
Save
Practice questions for this set
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Terms in this set (50)
State the electron rules Lowest energy filled first (3d>4s)
Line up parallel
Single until forced to pair
Electronegativity The ability of an atom to attract electrons within a
covalent bond
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, 3/25/26, 6:32 PM AQA Chemistry As Level Paper 1 Exam Questions and answers with verified Answers (Latest Update 2026) UPDATE!! Flashcards |…
RAM (relative atomic mass) Average mass of one atom compared to 1/12th the
mass of a c-12 atom
-
Ionisation energy 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 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 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 P - between groups 4-5 there is a drop
- First electron pairing
- increased repulsion
- less energy is required to remove an eleccte
Isotopes Atoms with the same atomic number but a different
mass number
- do not react differently as same electron
configuration
https://quizlet.com/1160344070/aqa-chemistry-as-level-paper-1-exam-questions-and-answers-with-verified-answers-latest-update-2026-update-flash-c… 2/8
AQA Chemistry As Level Paper 1 Exam Questions
and answers with verified Answers (Latest Update
2026) UPDATE!!
Save
Practice questions for this set
Learn 1 /7 Study with Learn
Terms in this set (50)
State the electron rules Lowest energy filled first (3d>4s)
Line up parallel
Single until forced to pair
Electronegativity The ability of an atom to attract electrons within a
covalent bond
https://quizlet.com/1160344070/aqa-chemistry-as-level-paper-1-exam-questions-and-answers-with-verified-answers-latest-update-2026-update-flash-c… 1/8
, 3/25/26, 6:32 PM AQA Chemistry As Level Paper 1 Exam Questions and answers with verified Answers (Latest Update 2026) UPDATE!! Flashcards |…
RAM (relative atomic mass) Average mass of one atom compared to 1/12th the
mass of a c-12 atom
-
Ionisation energy 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 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 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 P - between groups 4-5 there is a drop
- First electron pairing
- increased repulsion
- less energy is required to remove an eleccte
Isotopes Atoms with the same atomic number but a different
mass number
- do not react differently as same electron
configuration
https://quizlet.com/1160344070/aqa-chemistry-as-level-paper-1-exam-questions-and-answers-with-verified-answers-latest-update-2026-update-flash-c… 2/8
