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A-level Chemistry Definitions questions and answers well illustrated.

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A-level Chemistry DA-level Chemistry Definitions questions and answers well illustratedefinitions questions and answers well illustA-level Chemistry Definitions questions and answers well illustrated ratedA-level Chemistry Definitions quA-level Chemistry Definitions questions and answers well illustratedestions and answers well illustratedA-level Chemistry Definitions questions and answers well illustratedA-level Chemistry Definitions questions and answers well illustratedA-level Chemistry Definitions questions and answers well illustratedA-level Chemistry Definitions questions and answers well illustratedA-level Chemistry Definitions questions and answers well illustrated

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A-level Chemistry Definitions questions and
answers well illustrated.




isotopes r- ANS.atoms rof rthe rsame relement rwith rdifferent rnumbers rof rneutrons

atomic r(proton) rnumber r- ANS.the rnumber rof rprotons rin rthe rnucleus rof ran ratom

mass r(nucleon) rnumber r- ANS.the rnumber rof rparticles r(protons rand rneutrons) rin rthe
rnucleus




ion r- ANS.a rpositively ror rnegatively rcharged ratom ror r(covalently rbonded) rgroup rof
ratoms r(molecular rion)




relative risotopic rmass r- ANS.the rmass rof ran ratom rof ran risotope rcompared rwith rone
rtwelfth rof rthe rmass rof ran ratom rof rcarbon-12




relative ratomic rmass r- ANS.the rweighted rmean rmass rof ran ran ratom rof ran relement
rcompared rwith rone rtwelfth rof rthe rmass rof ran ratom rof rcarbon-12




relative rmolecular rmass r(Mr) r- ANS.the rweighted rmean rmass rof ra rmolecule
rcompared rwith rone rtwelfth rof rthe rmass rof ran ratom rof rcarbon-12




relative rformula rmass r- ANS.is rthe rweighted rmean rmass rof ra rformula runit rcompared
rwith rone rtwelfth rof rthe rmass rof ran ratom rof rcarbon-12




amount rof rsubstance r- ANS.the rquantity rwhose runit ris rthe rmole: rchemists ruse
r'amount rof rsubstance' ras ra rmeans rof rcounting ratoms

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