Physical Chemistry I Exam Questions and
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and Answers Study Guide 2026.pdf
Physical Chemistry I Exam Questions
and Answers Study Guide 2026
Guidehttps://www.stuvia.com/dashboard!@_)#*)(@$)($@*($@)($@*_
Physical Chemistry I Exam Questions and
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and Answers Study Guide 2026.pdf
,CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
Terms in this set (11)
Relative mass and relative charge of a) RM = 1, RC = 0.
a)neutrons b) RM =approx 0, RC = -1.
b) electrons?
An atom has twice as many protons as, and for four more 17O
neutrons than, ana toms of 9Be. Deduce the symbol,
including mass number of this atom?
Define... a) number of protons and neutrons.
a) Mass number of an atom?
b) Relative Molecular Mass? b) average/mean mass of a molecule.
CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
,CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
Complete the electron formula for a copper atom? 2s^2 2p^6 3S^2 3p^6 4s^1 3d^10
Identify block in the periodic table to which copper d/D
belongs?
Deduce number of neutrons in one atom of 65Cu? 36.
A sample of copper contains the two isotopes 63Cu and i) More 63Cu atoms than 65Cu atoms.
65Cu only. It has a relative atomic mass, Ar, less than 64.
The mass spectrum of this sample shows major peaks ii) Electron from electron gun / high speed electron / high energy electron
with m/z values of 63 and 65, respectively. (accept electron gun fired at)
knock electron off (Cu atom) / idea of loss of e-
(i) Explain why the Ar of this sample is less than 64.
(ii) Explain how Cu atoms are converted into Cu+ ions in
a mass spectrometer.
CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
, CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
(iii) In addition to the major peaks at m/z = 63 and 65, 63Cu2+or equivalent [NOT 63.0 - penalise this error once only] m/z = 63/2 (=31.5)
much smaller peaks at m/z = 31.5 and 32.5 are also or equivalent
present in the mass spectrum. Identify the ion
responsible for the peak at m/z = 31.5 in the mass More energy needed to remove second electron OR 63Cu2+ statistically less
spectrum. Explain why your chosen ion has this m/zvalue likely to remove second electron
and suggest one reason why this peak is very small.
Identity of the ion (Idea that not many 63Cu2+ ions formed OR explains why few are formed e.g.
more energy needed)
Explanation for m/z value
Reason why this peak is very small
Explain how, in a mass spectrometer, ions are detected a) (atoms with the) same number of protons / same atomic number / atoms of the
and how their abundance is measured. same element;(molecules = contradiction)But different number of neutrons /
a) How ions are detected . different mass number.
b) How abundance is measured
b) detected by: +ve ions collide with / are directed or deflected to / are
collected at the detector;causing current to flow / detected electrically /idea of
electricity or voltage generated;
(not 'charge produced' or 'detected electronically')
abundance measured: idea that current depends on abundance/number of ions
hitting detector;
CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and Answers Study Guide 2026.pdf
Physical Chemistry I Exam Questions
and Answers Study Guide 2026
Guidehttps://www.stuvia.com/dashboard!@_)#*)(@$)($@*($@)($@*_
Physical Chemistry I Exam Questions and
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and
Physical
AnswersChemistry
Study Guide
I Exam
2026.pdf
Questions and Answers Study Guide 2026.pdf
,CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
Terms in this set (11)
Relative mass and relative charge of a) RM = 1, RC = 0.
a)neutrons b) RM =approx 0, RC = -1.
b) electrons?
An atom has twice as many protons as, and for four more 17O
neutrons than, ana toms of 9Be. Deduce the symbol,
including mass number of this atom?
Define... a) number of protons and neutrons.
a) Mass number of an atom?
b) Relative Molecular Mass? b) average/mean mass of a molecule.
CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
,CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
Complete the electron formula for a copper atom? 2s^2 2p^6 3S^2 3p^6 4s^1 3d^10
Identify block in the periodic table to which copper d/D
belongs?
Deduce number of neutrons in one atom of 65Cu? 36.
A sample of copper contains the two isotopes 63Cu and i) More 63Cu atoms than 65Cu atoms.
65Cu only. It has a relative atomic mass, Ar, less than 64.
The mass spectrum of this sample shows major peaks ii) Electron from electron gun / high speed electron / high energy electron
with m/z values of 63 and 65, respectively. (accept electron gun fired at)
knock electron off (Cu atom) / idea of loss of e-
(i) Explain why the Ar of this sample is less than 64.
(ii) Explain how Cu atoms are converted into Cu+ ions in
a mass spectrometer.
CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
, CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
(iii) In addition to the major peaks at m/z = 63 and 65, 63Cu2+or equivalent [NOT 63.0 - penalise this error once only] m/z = 63/2 (=31.5)
much smaller peaks at m/z = 31.5 and 32.5 are also or equivalent
present in the mass spectrum. Identify the ion
responsible for the peak at m/z = 31.5 in the mass More energy needed to remove second electron OR 63Cu2+ statistically less
spectrum. Explain why your chosen ion has this m/zvalue likely to remove second electron
and suggest one reason why this peak is very small.
Identity of the ion (Idea that not many 63Cu2+ ions formed OR explains why few are formed e.g.
more energy needed)
Explanation for m/z value
Reason why this peak is very small
Explain how, in a mass spectrometer, ions are detected a) (atoms with the) same number of protons / same atomic number / atoms of the
and how their abundance is measured. same element;(molecules = contradiction)But different number of neutrons /
a) How ions are detected . different mass number.
b) How abundance is measured
b) detected by: +ve ions collide with / are directed or deflected to / are
collected at the detector;causing current to flow / detected electrically /idea of
electricity or voltage generated;
(not 'charge produced' or 'detected electronically')
abundance measured: idea that current depends on abundance/number of ions
hitting detector;
CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf CHEMISTRY EXAM QUESTIONS AND ANSWERS (Physical Chemistry I).pdf
