NGHIEN CUU & UNG DUNG XAY DUNG VA SUT DUNG BAI TAP PHAN HOA NEU VAN DE CHUDNG POLIME VA VAT LIEU PDLIME HOA HOC LQlP 12 ThS Trang Quang Vinli Trudng Bgi hgc An Giang SUMMARY Teaching assignment to rai[.]
NGHIEN CUU & UNG DUNG XAY DUNG VA SUT DUNG BAI TAP PHAN HOA - NEU VAN DE CHUDNG POLIME VA VAT LIEU PDLIME HOA HOC LQlP 12 ThS Trang Quang Vinli Trudng Bgi hgc An Giang SUMMARY Teaching assignment - to raise issues is learning style combinedwith two elements: assignment and raise issues to achieve the goal of innovative teaching methods in the current period is both ensuring one's power, closing object in education and brining into play the positive academic, taking the form and developing detective capabilities, and solving problems in academic as well as in the lives of students Keywords: teaching assignment - to raise issues, polymer, polymeric material Ngify nhpn bdi: 10/6/2014; Ngdy duypt ddng: 25/6/2014 Nhdm phit triin ning lye tu sing t^o, tu nhdt, trinh biy l^i kiin thd:c co bin dya vio tri nhd Idgic cho tin^ ci nhin hgc sinh vi gdp phin vio - vdn di thii hai (mire dd 2): HS biit v§n dyng vide ning eao chit luyng, hi^u qui d^y h^e Hoi hpc kiin thdre vio diiu kidn mdi, sir dyng kiin thde vio is trudt^ THPT, bii bio niy gidi thidu mdt sd bii thyc ti Mudn hoin thinh vin di niy, HS cdn cd sy tip phin hoi - ndu vin dd thudc chuong polime vi phin tich so sinh di ndu dupc cic diiu kidn co bin v9t Ii§u polime (Hoi hpc Idp 12) Cic bii tip phin ddi vdi mpt sd Idp eic chdt, cic hi^n tupng hda - n€u vdn dk niy di duyc thye nghifm t^i trudng - vdn di thii ba {mdc dd 3); Li mile dd eao nhdt THPT Nguyin Dinh Chiiu - Thj Xa Sa D6e - Ddng ba mire dd, mdc dd niy ydu edu khdng chi phin Thip tieh, so sinh mi phii khii quit hoi cie sd lifu thu Co sd 1^ lu^n x§y dyng b i i t^p phan hda - dupe, sir dyng chiing diiu kifn mdi phiic t^p hon n£u vdn d i IMdt sd bii t$p phin bda - neu vdn di chuong Polime vi v$t li§u polime U.Cas&l^lupn 2.1 Bdi tpp (Bdi tpp ly thuyit) Bii t$p phin hoi d^y hpc neu vdn di li nhftng bii t$p hoi hpc mi qui trinh giai, thudng * Ngi dung bdi tgp: Viit eic phuang trinh hda xudt hi§n trude hpe sinh (HS) cic ciu hdi cd die tinh hpc cua cic phin Omg t ^ eic polime t£r monome "nfiu vdn di" TCiy theo myc dieh djy hpe, tinh phure sau t^p vi quy md cua ti!mg lo^i toin hoi hpe mi giio a Buta-l,3-dien vi stiren vifin (GV) ed thi sir dyng cic hinh thi!rc phin hoi b Vinyl elorua vi vinyl axetat khie Cd thi sur dyng bii tip hoi hpc phin hoi c Axit metacrylic vi buta-l,3-dien di d^y cho HS giii quyit mdt vdn di hpe t@p ed lien d Axit adipie vi hexametylendiamin quan din nhOng kiin thi>e quan trpng ho$c di vin * Thiit ki theo kiiu phdn hod - niu vdn di dyng tdng hyp nhiiu Iciin thOre cua ehuong trinh Hoi Miic dg I: Viit eic phuong trinh hda hpc eua hpc, ho$e di tip dupt cho HS giii quyet nhQng vdn cic phin iing t^o eic polime sau tir monome di thye tiin dupe ehpn Ipc gdn tuong ty vdi vin de hpc t$p d nhi tnrdng nhung di biin ddi It hay nhiiu, tinh phOc t9p dupc ning cao ddn 1.2 Nguyin tdc xdy dyng Thdng thudng ttr mdt ndi dung eua bii tip, chung ta cd thi thiit ki thinh ba vdn di theo ba mi^e dd vdi myc dIeh hudng din vi^c tu tii li^u mdi vi cy thi hoi mdc dd kiin thi^c cua ci Idp - vdn di thir nhdt (muc dd 1): Cdn hudng HS neu dupc tinh ehdt ridng bidt eiia eic chdt, cic hi?n tupng, cich \^ giai nhOng nguydn nhin don giin HjCOOC _C I H, C- Hj l, Muc 2: Bai t o ^ g6c Mic 3: ViSt phirong trinh h6a hpc cua phan img t?o th^nh polime sau ttr cic monome tuong ung a Poli(etylen-terephtalat) TiM> CHl THlfTBIGlAO DVC-$6107-7/2014 • 41 IIIBBBBnS • Thiit ki theo kiiu phdn hod - niu vdn di b PoIi(hexametyIen-adipic) Muc d0 1: Ddt chiy hoin toin 6,55 gam amino e Poli(butadien-aciylonitrin) axit A (chiia myt nhdm cacbo:Q'I) thi thu dupc 0,3 d Poli(metyImetacrilat) 2.2 Bdi tpp (Bdi t^ If thuyit- thyc nghidm) moi COj, 0,325 moi H^O v i 0,56 lit cda mpt tro * Ngi dung bdi tgp: Hoin thinh so dd phan iing, (d dktc) xic djnh cic chdt A, B, C Viit edng thiic ciu t^o v i tdn cda A biit ring A Ii mdt E - aminoaxit AxetUen "?''°"'° > A - ^ ^ ! ^ B (CH,COO).Z„ , Viit phuong trinh hda hpc cua phin iing diiu Xt,t°,| ehi polime tii chdt A ^poIi(vinyI axetat)-> poli(vinyl ancol) Muc dg 2: Bii toin gde * Thiit ki theo kieu phdn hod - niu vdn di Muc dg 3: Dk ddt chiy hoin toin 6,55g chdt A Muc dg 1: Hoin thinh so dd phan umg sau: cdn dimg vira hit 9,24 lit oxi Sin phSm chiy gdm ed Axetilen-»andehit->axit axetic->Vinyl axetat 5,85g H p v i 7,28 lit hdn hpp gdm CO^ vi N^ ->poli (vinyl axetat)->poIi (vinyl ancol) Cic thi tieh d dktc Muc dg 2: Bii toin gde Xic djnh cdng thiic phin tii cua A biet ring phin Muc dg 3: TCr nguydn li§u li axetilen v i cic chdt tii khdi cua A li 131 vd CO, ngudi ta ed thi dieu che poIi(vinyI axetat) vi Viit cdng thJic edu t^o vi tdn cila A biit ring A poli(vinyl ancol) Hiy viit phuong trinh hda hpc ciia li mdt c - aminoaxit eic phin img xiy qui trinh diiu chi dd Viit phuong trinh hda hpc cua phin thig diiu 2.3 Bdi tpp (Bdi tpp tdng hgrp) chi polime tir chdt A * Ngi dung bai tgp: Ddt chiy hoin toin d,55 Tiin trinh thyc nghi$m %\x ph^m gam amino axit A thl thu dupe 13,2 gam CO^, 5,85 Chdng tdi chpn Trudng THPT Nguyin Dinh gam HjO vi 0,56 lit cua mpt tro (d O'C; atm) Chiiu, Thi Xi Sa Ddc, Tinh Ddng Thip di tiin hinh Xic di nh cdng thirc phan tur cda A biit ring phin d^y chuong Polime vi v^t lifu polime vio hpc V.^ I tir khdi cua A la 131 cua nim hpc 2012 - 2013 ldp ddi chiing (DC) li Viit cdng thiic edu t^o vi tdn cua A biit ring A 12B3 (37 HS), GV sii dyng giio in binh thudng, ldp thye nghifm (TN) li I2B4 (37 HS) GV thiit ki giio Ii mgt - aminoaxit Viit phuang trinh hda hpc eua phin iing diiu in cd sir dyng bii t|ip phin hda - neu vdn dk Hai ldp niy deu hpc chuong trinh Hda hpc 12 vi khdng phii ehi polime tir chdt A Bdng Bdngphdnphoi tdn so, tdn sudt vd tdn sudt luy tich (Ldp 12B3 vd 12B4) Dilm S6 HS djt dilm Xi DC TN 0 10 Z 1 6 37 I 37 %HS djt dilm Xi TN DC 0.00 0.00 0.00 2.70 2.70 10.81 21.62 18.92 16.22 16.22 8.11 2.70 100.00 42 • T4P CHl THlfTBIGlAO DVC-sti 107-7/2014 0.00 2.70 2.70 5.41 10.81 18.92 21.62 16.22 13.51 8.11 100.00 %HS dat dilm Xi trd xudng DC TN 0.00 0.00 0.00 2.70 5.41 16.22 37.84 56.76 72.97 89.19 97.30 100.00 0.00 2.70 5.41 10.81 21.62 40.54 62.16 78.38 91.89 100.00 NGHIEN CUU & UNG DUNG E)C cao hon nhdm TN Dd thi dudng luj tich cua HS ii ldp chpn, cdng mdt GV day Chdng tdi cho HS lim mdt bii kiim 45 phdt nhdm TN ludn nim bdn phii vi phia dudi dudng luj (ty lu$n) d hai Idp (di kiin tra nhu nhau, cfmg dip in tich cua nhdm DC, diiu dd chiing td ehdt lupng hpe vi cung GV chdm) di dinh gii hifu qui sii dyng bii t^p ciia HS nhdm TN cao hon HS nhdm DC t^p phin hda - ndu vin di Kit qui thyc nghifm su Nhu viy bii t^p phan hda - neu vdn de dim bio p h ^ dupe trinh biy cic b ^ g (1,2) tinh ehlnh xic, tinh khoa hpc, phCi hpp vdi ddi tupng Bdng Tdng hgp pftdn logi kit qud hgc t4p HS, ning cao dupe ning tiip thu vi vin dyng cuaHS kiin thiic, nang lim vifc ddc I^p, tieh eye vi phit S5%HS triin tu sing tgo eua HS Kit qui thye nghifm D6i eho thdy d Idp TN ed xu hudng tdt hon ldp DC, diiu YIU, k6m Tnmg binh Kh^ gioi tu(mg dd eho phep budc ddu khing djnh tinh hifu qui ciia (5-7) (8-10) (0-4) vifc sir dyng bii t ^ phin hda - neu vdn de d9.y 51.35 TN 10.81 37.84 hpe Nhu v?.y, eic kit qui thu dupc ein ban di xic nh|n gii thuyit eiia di tii DC 16.22 56.76 27.03 Kit luin Vifc xiy dyng cie bii t§p phin hda - nfu vin di chuang Polime vi vit Hfu polime Hoi hpc Idp 12, tinh phiic tgp lien tye ciia vdn di eic bii tip da tgo diiu kifn cho HS tiip xiic nhiiu vdi eic bii tip ca bin, hinh thinh ky ning dn tgp tii lifu qua cic vdn di thii nhdt vi phit triin hogt ddng tu tich eye tri Idi eic vdn di phiie tgp hon NhQng bii tip nhu thi di ning eao hifu qui dgy hpc Hda hpe theo hudng vCra phCi hpp vdi ddi tupng nhgn thiie, vira phit huy ning lyc giii quyit vdn di S 1011 hpe t§p cda HS Kit qui thye nghifm su phgm niy bude ddu da phit huy dupe tinh tich eye, ning Hinh Dd thj dudng iQy lich lyc sing tgo vi sy hihig thii eho HS hpc tĐp mdn Hda hpe 50.00 40.00 J ã- ã" ã~t - | -J •-^•-r Tii lifu tham khio Le van Nam (2004) Sir dyng dgy hgc phdn hod dgy hgc niu vdn di bg mon Hod hgc Tgp • DC 10.00 ehi Giio dye, sd 101 0.00 Lf van Nam (2005) Xdy dung cdc bdi tgp (6-10) (0-*) i"i hod hgc theg hudng phdn hod - neu vdn di Tgp chi Trung binh | Khd fll6l Yiu, k i m Giio dye, sd 123 stf KHS Ld van Nim, Trang Quang Vinh (2012) Xdy Hinh Biiu ddphdn logi ket qua hgc tgp cua HS dyng hi thong bdi tgp phdn hod - niu vdn di phdn hidrocacbon vd ddn xudt halogen Tgp chi Hoi hpc Phin tich kit qui thyc nghifm: Kit qui TN cho thdy, chdt Iirpng hpc tip cua HS vi LTng dyng, sd 4, tr.44-47 Nguyen Thj Sim, Lf Vin Nim (2009) cic Idp TN cao hon Idp DC (thi hifn d dd thj) Ty If % HS d^t diim gidi d nhdm TN ludn eao hon Phuang phdp dgy hgc Hda hgc NXB Khoa hpc vi nhdm DC vi ti If % HS cd diim yiu kdm d nhdm Krthu$t,HiNpi 20.00 • TN TAPCHlTHlfreiGlAODUC-Sd 107-7/2014 • 43 ... phin d^y chuong Polime vi v^t lifu polime vio hpc V.^ I tir khdi cua A la 131 cua nim hpc 2 012 - 2013 ldp ddi chiing (DC) li Viit cdng thiic edu t^o vi tdn cua A biit ring A 12B3 (37 HS), GV... Hai ldp niy deu hpc chuong trinh Hda hpc 12 vi khdng phii ehi polime tir chdt A Bdng Bdngphdnphoi tdn so, tdn sudt vd tdn sudt luy tich (Ldp 12B3 vd 12B4) Dilm S6 HS djt dilm Xi DC TN 0 10 Z... 16.22 56.76 27.03 Kit luin Vifc xiy dyng cie bii t§p phin hda - nfu vin di chuang Polime vi vit Hfu polime Hoi hpc Idp 12, tinh phiic tgp lien tye ciia vdn di eic bii tip da tgo diiu kifn cho HS tiip