b v capitals.
Centrenumber Candidatenumber
Surname v
Forename(s) v
Candidatesignature
work.
GCSE
COMBINEDSCIENCE:TRILOGY
FoundationvTier
F
vPhysicsPaper1
F
Thursday22May2025 Morning Timeallowed:1hour15minutes
b
Materials For Examiner’s Use
b b
For this paper youmusthave:
b b b
Question Mark
aruler
ascientific calculator b
1
thePhysicsEquationsSheetv(enclosed). 2
3
Instructions
Useblackinkvor blackball-pointvpen. b
4
Pencil shouldonly beusedfor drawing.
b b b 5
Fillvintheboxes atvthetopof this page.
b b b
6
Answer allvquestions inthespaces provided.
b b b
Ifvyouneedextraspaceforvyourvanswer(s),vusethelinedpagesvatvtheendofvthisvb
b b b b b b
TOTAL
ook.v Writethequestionvnumber againstvyour answer(s). b b
Do allvroughworkvinthis book.vCrossthroughany workvyoudonotvwantvtobevmar
b b b
kevd.
Inallcalculations,vshowclearly howyouworkoutyour answer. b b
Information
Themaximummarkfor this paper is70. b b b
Themarksfor questionsarev showninbrackets.
b
Youareexpectedto useavcalculator whereappropriate. b b
Youareremindedof theneed for goodEnglishandclear presentationinyour answers.
b b b b b
IB/M/Jun25/G4007/E8 8464/P/1F
, 2
Do notwrite
b
v outsidet
box
0 1 Therevarevdifferentvvisotopesvofvthevelemen
b b
he
tvlead.
0 1 . 1
[1mark]
What v isv the v difference v between v the v atomsv ofv vdifferentvvisoto
b b b
pes vofv lead?vTickv()vonev box.
b b b
Thenumber of electrons
b b
Thenumber of neutronsvThenumber of
b b b b
protons
0 1 . 2 The isotope lead-210 is radioactive.
Whatis meantby ‘lead-
b b
[1mark]
v210isradioactive’?vTickv()vonevbox.
Lead-210formsmany differentvcompounds.
b
Lead-210has unstablenuclei.
b
Lead-210meltsatvalowtemperature.
IB/M/Jun25/8464/P/1F
, 3
Do notwrite
b
v outsidet
box
0 1 . 3 The isotope lead- he
210emits betaradiation.vWhatvis betavradiation
b b
[1mark]
?vTick()vone box.
b
Electromagnetic radiation emitted from nuclei
Highspeedelectrons ejected fromvnucleivParticles th
b b b
atvconsistvof twoneutronsvandtwo protons
b b
Question1continuesonvthenext page
b
Turnover►
IB/M/Jun25/8464/P/1F
, 4
Do notwrite
b
v outsidet
Thepaintv inanoldpaintingcontains theisotopelead-210.
b
he
box
Thelead-210v inthepaintv canbeusedtoestimatetheageof thepainting.
b
Figure 1showshowtheactivity of thelead-210inthepaintv changesv withtime.
b b b
Figurev1
0 1 . 4 Whatwas theinitialactivity of thelead-210inthepaint?
b b b
UseFigurev1.
[1mark]
Activity =vb kBq
IB/M/Jun25/8464/P/1F
Centrenumber Candidatenumber
Surname v
Forename(s) v
Candidatesignature
work.
GCSE
COMBINEDSCIENCE:TRILOGY
FoundationvTier
F
vPhysicsPaper1
F
Thursday22May2025 Morning Timeallowed:1hour15minutes
b
Materials For Examiner’s Use
b b
For this paper youmusthave:
b b b
Question Mark
aruler
ascientific calculator b
1
thePhysicsEquationsSheetv(enclosed). 2
3
Instructions
Useblackinkvor blackball-pointvpen. b
4
Pencil shouldonly beusedfor drawing.
b b b 5
Fillvintheboxes atvthetopof this page.
b b b
6
Answer allvquestions inthespaces provided.
b b b
Ifvyouneedextraspaceforvyourvanswer(s),vusethelinedpagesvatvtheendofvthisvb
b b b b b b
TOTAL
ook.v Writethequestionvnumber againstvyour answer(s). b b
Do allvroughworkvinthis book.vCrossthroughany workvyoudonotvwantvtobevmar
b b b
kevd.
Inallcalculations,vshowclearly howyouworkoutyour answer. b b
Information
Themaximummarkfor this paper is70. b b b
Themarksfor questionsarev showninbrackets.
b
Youareexpectedto useavcalculator whereappropriate. b b
Youareremindedof theneed for goodEnglishandclear presentationinyour answers.
b b b b b
IB/M/Jun25/G4007/E8 8464/P/1F
, 2
Do notwrite
b
v outsidet
box
0 1 Therevarevdifferentvvisotopesvofvthevelemen
b b
he
tvlead.
0 1 . 1
[1mark]
What v isv the v difference v between v the v atomsv ofv vdifferentvvisoto
b b b
pes vofv lead?vTickv()vonev box.
b b b
Thenumber of electrons
b b
Thenumber of neutronsvThenumber of
b b b b
protons
0 1 . 2 The isotope lead-210 is radioactive.
Whatis meantby ‘lead-
b b
[1mark]
v210isradioactive’?vTickv()vonevbox.
Lead-210formsmany differentvcompounds.
b
Lead-210has unstablenuclei.
b
Lead-210meltsatvalowtemperature.
IB/M/Jun25/8464/P/1F
, 3
Do notwrite
b
v outsidet
box
0 1 . 3 The isotope lead- he
210emits betaradiation.vWhatvis betavradiation
b b
[1mark]
?vTick()vone box.
b
Electromagnetic radiation emitted from nuclei
Highspeedelectrons ejected fromvnucleivParticles th
b b b
atvconsistvof twoneutronsvandtwo protons
b b
Question1continuesonvthenext page
b
Turnover►
IB/M/Jun25/8464/P/1F
, 4
Do notwrite
b
v outsidet
Thepaintv inanoldpaintingcontains theisotopelead-210.
b
he
box
Thelead-210v inthepaintv canbeusedtoestimatetheageof thepainting.
b
Figure 1showshowtheactivity of thelead-210inthepaintv changesv withtime.
b b b
Figurev1
0 1 . 4 Whatwas theinitialactivity of thelead-210inthepaint?
b b b
UseFigurev1.
[1mark]
Activity =vb kBq
IB/M/Jun25/8464/P/1F
