Checklist for scoring grade a in chemistry SPM 2009

Chap Chapter ter 2: Th Thee Stru Struct ctur uree ofth ofthee Atom Atom

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Stat State e the the kinet kinetic ic theo theory ry of matt matter er,, Stat State e one one exam exampl ple e to supp suppor ortt the the kine kineti tic c theo theory ry of mat matte terr What are are

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rrJol rrJolecu ecule le and ion? ion?

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What What is melti elting ng poin point? t?

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Defi Define ne prot proton on numb number er and and nucle nucleon on numb number er,,

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State State the the meani meaning ng of isotop isotopes, es,

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Stat State e the the uses uses of isot isotop opes es such such as car carbo bonn-14 14

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and and cobal cobaltt-60 60..

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Expl Explai ain n why why the the temp temper erat atur ure e

rema remain ins s unch unchaa-ng ng-e -e-o -o~' -d-u-ri-ng-th-e-m-e-it-ir-,g-p-ro-c-e-s-s~. ~' ------------.,

Expla Explain in why why the temp tempera eratur ture e

remai remains ns unchan unchanged ged diJi'ing the freezi freezing ng proce process. ss.

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A soli solid d compo compoun und d is heat heated ed unti untill it conv conver erts ts into into gas gas.. Expl Explai ain n the the chang changes es in ener energy gy cont conten ent, t, forces forces of attrac attracti tion on betw between een the parti particl cles, es, and and arrange arrangeme ment nt of parti particl cles" es"

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Stat State e the the main main suba subato tomi mic c part partic icle les s of an atom atom.. Comp Compar are e and and cont contra rast st the the rela relati tive ve atom atomic ic mass mass and and the rela relati tive ve char charge ge of the the suba subato tomi mic c parti particle cles s of the the atom. atom.

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11) ~; Al the symbol symbol of alumini aluminium um..  Al is the (a) Dete Determ rmine ine the number number of neut neutron ron of alumi aluminiu nium. m. (b) Draw Draw the electro electron n arrang arrangem ement ent of alum alumini inium um..

C. Synt Synthe hesi siss (Ex (Ex erime eriment nt)) 12) 12) Soli Solid d Z has has a melt meltin ing g poin pointt o'f6 o'f65° 5°C. Desc Descri ribe be a lab labor orat ator ory y expe experi rime ment nt to det deter ermi mine ne poin pointt of Z. Z. Your Your answ answer er shou should ld show show how how the the melt meltin ing g poin pointt of Z is is dete determ rmin ined ed.. 13) 13) Compo Compoun und d \/V \/V has has a free freezi zing ng poin pointt of 82° 82°C. Desc Descri ribe be a iab iabor orat ator ory y free freezi zing ng poin pointt of W.

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· Chap Chapte terr 3: Chem Chemic ical al Form Formul ulae ae and and E~tions

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  /A. /A. Know Knowle ledg dgee (j)e (j)efi fini niti tion on,, mean meanin ing g and and fact facts) s) r 1) .State th e meaningof'relatlveatomlC - m a s s based -oncarbon-12 scale. 2

) sDteft sDteftine inetha tha mole_ . f I 3 a e e mean meanin ing g 0 mo ar mass

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State the meaning of molar volume of gas_  State State the meanin meaning g of empiric empirical al formu formula la I

State the meaning of molecular formula.

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7) Explain Explain why we couldn couldn't't determ determine ine the empiri empirical cal formula formula of copper( copper(lI) lI) oxide oxide by heatin heating g copper copper powder in a crucible.

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8) Compar Compare e and contr contrast ast empiri empirical cal formul formula a with with molecu molecular lar formula formula using using ethane ethane as an example example..

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IB.-cUnderstanding

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/ Application

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Vinega Vinegarr is a dilute dilute ethanoic ethanoic acid with with a molecula molecularr formul formula a of CH3COOH (a) Find the empirical formula of ethanoic ethanoic acid. (b) Find the the percentage percentage composition composition by mass of carbon in ethanoic acid

10) 3.6 g of carbon reacted with 0.8 g of hydrogen to form a compound. (a) Determine Determine the empirical formula formula of the the compound formed. formed. (b) Given Given that the relati relative ve molecul molecular ar mass mass of the compoun compound d is 88 g, find find its molecula molecularr formul formula. a. [Relative atomic mass: C ,12; H, 1] 11) Hydrogen Hydrogen Gas is reacted reacted 'vvith20 'vvith20 g of hot copper(ll copper(ll)) oxide oxide powder powders s to produce produce solid solid copper copper and'vvater. (a) Write the chemical equation equation for the reaction. (b) Calculate Calculate the maximum mass of solid copper formed. formed. [Relati [Relative ve atomic atomic mass: Cu, 64; 0,16; 0,16; H,1] H,1]

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sJ:~t~~ sJ:~t~~~sa ~sa \;~~:~~ \;~~:~~~::~ ~::~eri erimen mentt to determ determine ine the empiric empirical al formu formula la of magnes magnesium ium oxide. oxide. Your answer answer should include all the precautions precautions and calculations calculations involved. involved. [Relative atomic mass: Mg, 24; 0,16]

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Chapt Chapter er 4: Peri Period odic ic Table Table of Elem Element ents s !

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Stat State e the the basi basic c prin princi cipl ple e of arr arran angi ging ng the the elem elemen ents ts in the the Peri Period odic ic Tabl Table e from from its its pro proto ton n

number Stat State e the phys physic ical al prop proper ertties ies

of Grou Group p 1.

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Chapt Chapter er 4: Peri Period odic ic Table Table of Elem Element ents s !

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Stat State e the the basi basic c prin princi cipl ple e of arr arran angi ging ng the the elem elemen ents ts in the the Peri Period odic ic Tabl Table e from from its its pro proto ton n

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Stat State e the phys physic ical al prop proper ertties ies

of Grou Group p 1.

State State three three specia speciall proper propertie ties s of transi transitio tion n ele elemen ments? ts?

Understanding! g! Application Application B. Understandin

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;~X  in Peri Period odic ic Tabl Table. e. Expl Explain ain your your answ answer er..

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Stat State e the the pos posit itio ion n of elem elemen entt

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When When acro across ss Peri Period od 3 from from sodI sodIum um to argo argon, n, the the atomi atomic c size size decre decreas ases es

When acro across ss Peri Period od 3 from from sodi sodium um to argo argon, n, the the eie eiect ctro rone nega gati tivi vity ty i 8) When I

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The The reac reacti tivi vity ty of Grou Group p 1 incr increa ease ses s

Expl Explai ain n why why

when when goin going g down down the the group group.. Expl Explai ain n why. why.

Why Why heliu helium m gas gas is not not reacti reactive ve? ? burntt in oxy oxyge gen n 1. X in burn

What What is the the prop proper eriy iy of the the solu soluti tion on form formed ed? ?

and and the the prod produc uctt is diss dissol olve ved d Expl Explai ain n Why. Why.

13) 13) Chlor Chlorin ine e gas gas is diss dissol olve ved d in wat water er.. What What can can you you obse observ rve e if a piec piece e of blu blue e litm litmus us pape paperr is imm immer erse sed d

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incr increa ease ses s

when when goin going g dovv dovv'n 'n the the grou group. p. Expl Explai ain n why. why.

The reac reacti tivit vity y of Grou Group p 17 decr decrea ease ses s

an elem elemen entt from from Grou Group p 112) X is an

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Expl Explai ain n why. why.

in wat water er..

into into the the solu solut! t!on on form formed ed? ?

Explain Explain why. why.

element nt from from Grou Group p 1. Pred Predic ictt the the chemic chemica! a! reac reacti tion on of W with with:: I14) \/V \/V is an eleme a) wat water, er, II

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and and wnte wnte the chemi chemica call equa equati tion on Invo Involve lve

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to com compa pare re the the reac reacti tivi vity ty of ele eleme ment nts s

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in Grou Group p 1. i1th i1thiu ium, m,

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sodium sodium and potassium potassium

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16) 16) Desc Descri ribe be a lab labor orat ator ory y expe experi rime ment nt to comp compar are e the the reac reacti tivi vity ty of chlo chlori rine ne,, brom bromin ine e and and iodi iodine ne in the the reac reacti tion on with with iron iron wool wool.. Stat State e the the obser observa vati tion on and and writ write e the the chem chemic ica! a! equa equati tion ons s invo involv lve e in

reactions.

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Chap Chapte terr 5: Chem Chemic ical al Bond Bonds s

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Chap Chapte terr 5: Chem Chemic ical al Bond Bonds s : A. Knowle Knowled d e (Def (Defini initio tion, n, mean!n mean!n and facts) facts) 1) What What is is anio anion? n?

B. Understand Understandin in

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5) Explai Explain n why sodi sodium um chlorid chloride e ¢:f1 conduct electricity in aqueous state but cannot conduct elec lectrici icity in soli solid d state. "" 6) Magnes Magnesium ium chloride chloride and hydrogen hydrogen chlori chloride de are two compoun compounds ds of chlor chlorine. ine. ,~.troom condition rnagnesiunl chloride exists as a solid but hydrogen chloride exists as a gas. Exp!ain t

8) By using using exampl example, e, descri describe be the forma formatio tion n of cova covalen lentt bond bond between between element element from from Group Group 14 and element element from Group 17. C. Synthesis Synthesis

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Draw Draw elect electron ron arrang arrangeme ement nt of the compou compound nd formed formed from the the follow following ing elemen elements. ts. ~itr?gen ~itr?gen an,dhydrogen, an,dhydrogen, I oJ lvarDo lvarDon n ana oxygen, oxygen, I I c) Magn Magnes esiu ium m and chlo chlori rine ne,, 'd) Carbon and hydrogen, II ~) iYdrOgen iYdrOgen and chlorine, chlorine, ~odium and oxygen.

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(:hapter (:hapter 6: Electrochemist Electrochemistry ry !

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$tat $tate e the the meani meaning ng of ele elect ctro rolyt lyte. e.

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State State the meaning meaning of elect electrol rolysi ysis. s.