A Level Physical Chemistry AQA questions and answers 100

x
x
x
x
x




A Level Physical Chemistry AQA questions
x x x x x




and answers 100% verified.
x x x x x

x
x
x
x
x
x
x
x
x
x
x
x
x
x
x

1 x- x x x xANS.relative xmass xof xa xproton x
x

1 x- x x x xANS.relative xmass xof xa xneutron x
x

1/1840 x- x x x xANS.relative xmass xof xan xelectron x
x

+1 x- x x x xANS.relative xcharge xof xa xproton x
x

0 x- x x x xANS.relative xcharge xof xa xneutron x
x

-1 x- x x x xANS.Relative xcharge xof xan xelectron x
x

strong xnuclear xforce x- x x x xANS.How xis xthe xnucleus xheld xtogether x
x

nuclear xforce x- x x x xANS.is xthe xnuclear xforce xor xelectrostatic xforce xstronger x
x

number xof xprotons x- x x x xANS.what xdoes xthe xatomic xnumber xrepresent x
x

atomic xnumber xz x- x x x xANS.the xnumber xof xprotons xin xan xatom x
x

number xof xprotons xand xneutrons x- x x x xANS.what xdoes xthe xmass xnumber xrepresent x
mass xnumber x(A) x- x x x xANS.the xnumber xof xnucleons xin xan xatom x
x

isotopes x- x x x xANS.atoms xof xthe xsame xelement xthat xhave xdifferent xnumbers xof
xneutrons x
x

electrons x- x x x xANS.what xdetermines xthe xreactivity xof xan xatom x
x

H1/H2/H3 x- x x x xANS.hydrogen xisotopes x
x

Cl35/Cl37 x- x x x xANS.Chlorine xisotopes x
x

Br79/Br81 x- x x x xANS.Bromine xisotopes x
x

C-14 x- x x x xANS.Carbon xisotope xused xfor xcarbon xdating x
x

2 x- x x x xANS.Number xof xelectrons xthe xfirst xshell xcan xhold x
x

8 x- x x x xANS.Number xof xelectrons xthe xsecond xshell xcan xhold x
x

,18 x- x x x xANS.Number xof xelectrons xthe xthird xshell xcan xhold x
x

Relative xAtomic xMass x- x x x xANS.Ar x
x

Relative xAtomic xMass x- x x x xANS.average xmass xof x1 xatom/1/12 xof x1 xatom xof xC-12 x
x

determines xthe xmass xof xseparate xatoms x- x x x xANS.What xdoes xthe xmass xspectrometer
xdo? x
x

Vacuum x- x x x xANS.First xstep xof xthe xTOF xSpectrometer x
x

Time xof xFlight xMass xspectrometer x- x x x xANS.TOF xspectrometer xfull x
x

Kept xunder xa xhigh xvacuum xto xavoid xcollisions xwith xair xmolecules x- x x x xANS.Vacuum
xstep x
x
(TOF)
x

Ionisation x- x x x xANS.Second xstep xof xthe xTOF xspectrometer x
x

Dissolved xin xsolvent xand xpassing xthrough xneedle xto xa xpositive xterminal xwith xa xhigh
xvoltage xproducing xpositively xcharged xdroplets xwhich xhave xlost xelectrons x- x x x

xANS.First xmethod xof xionisation x(TOF) x
x

Molecules xgain xa xproton x- x x x xANS.Second xmethod xof xionisation x(TOF) x
x

Acceleration x- x x x xANS.Third xstep xof xthe xTOF xspectrometer x
x

Positive xions xattached xto xa xnegative xplate xso xthey xaccelerate xtowards xit,
xfaster x
x
depending xon xtheir xm/z xratio x- x x x xANS.Acceleration xstep
x(TOF)

mass/charge x- x x x xANS.m/z xratio x
x

Ion xDrift x- x x x xANS.Fourth xstep xof xthe xTOF xspectrometer x
x

Ions xpass xthrough xa xhole xin xthe xnegative xplate, xforming xa xbeam xto xtravel xalong xthe
xflight x
x
tube xto xthe xdetector x- x x x xANS.Ion xDrift xstep
x(TOF)
x

Detection x- x x x xANS.Fifth xstep xof xthe xTOF xspectrometer x
x

Ions xwith xhighest xvelocities xarrive xat xthe xdetector xfirst xand xflight xtimes xrecorded. xIons
xpick x
x
up xan xelectron xwhich xcauses xa xcurrent xto xflow xso xthey xare xdetected x- x x x
xANS.Detection
x
step
x(TOF)
x

Data xAnalaysis x- x x x xANS.Sixth xstep xof xthe xTOF xspectrometer x
x

, signal xfrom xthe xdetector xgoes xto xa xcomputer xwhich xgenerates xthe xmass
xspectrum x-
x
ANS.Data xAnalysis xstep

x(TOF)
x

Identify xthe xabundance xof xdifferent xisotopes x- x x x x ANS.What xcan xthe xmass
xspectrometer x
x
do
x

abundance x- x x x xANS.what xdoes xthe xheight xof xa xpeak xon xa xmass xspectrum xgive x
x

m/z x- x x x xANS.what xdoes xthe xhorizontal xaxis xon xa xmass xspectrum xgive x
x

(abundance xx xm/z) x+ x(abundance xx xm/z) xall xover xtotal xabundance x- x x x xANS.How xto
xwork x
x
out xthe xAr xof xan xelement xfrom xa xmass
xspectrum
x

2n2 x- x x x xANS.General xformula xfor xthe xmaximum xnumber xof xelectrons xeach xenergy
xlevel x
x
can
xhold
x

s,p,d,f x- x x x xANS.four xdifferent xatomic xsub-levels x
x

s x- x x x xANS.Which xsub-levels xdoes xthe xfirst xshell xcontain x
x

s,p x- x x x xANS.Which xsub-levels xdoes xthe xsecond xshell xcontain x
x

s,p,d x- x x x xANS.Which xsub-levels xdoes xthe xthird xshell xcontain x
x

2 x- x x x xANS.Number xof xelectrons xthe xs xsub-level xcan xhold x
x

6 x- x x x xANS.Number xof xelectrons xthe xp xsub-level xcan xhold x
x

3 x- x x x xANS.Maximum xnumber xof xp-orbitals xper xshell x
x

10 x- x x x xANS.Number xof xelectrons xthe xd xsub-level xcan xhold x
x

5 x- x x x xANS.Maximum xnumber xof xd-orbitals xper xshell x
x

s-orbital x- x x x xANS. x
x

p-orbital x- x x x xANS. x
x

Atomic xorbital x- x x x xANS.A xregion xof xspace xaround xan xatomic xnucleus xwhere xthere
xis xa x
x
high xprobability x(95%) xof xfinding xan
xelectron
x

cloud xof xnegative xcharge x- x x x xANS.what xare xelectrons xif xnot xa xsolid xparticle x
x