1. 1. LUT CHI - Lp hc chia thnh 4 i v bu ra i trng. - 4 i trng s ln bc thm ginh quyn chi trc. - i chi s c chn 1 ch , trong mi ch s c 1 hoc nhiu hn 1 cu hi. - Mi cu hi c gi bng nhiu cch: t ng, hnh nh, on video hoc m phng th nghim . - i chi s c 60s a ra p n. Nu qu 60s, i chi cha a ra c p n hoc a ra p n sai th quyn tr li s c trao li cho i nhanh tay bm chung, tt nhin im s s thuc v i ginh quyn tr li nu i tr li ng. - Mi cu tr li ng, i chi ginh c 10 im, tr li sai khng b tr im. - Lu : trong mt cu hi bt k, ngu nhin s c 1 cu hi ph, nu i no may mn chn c th s c quyn tr li v ghi im c 2 cu hi. - Nu tr li sai cu hi chnh th cu hi ph s trao li cho i nhanh tay bm chung ginh quyn tr li.
2. 2. Cu hi 1: y l 1 tnh cht c trng ca kim loi? T N H K H - a s cc nguyn t kim loi c s electron ha tr l 1, 2, 3, hoc 4 (i vi cc kim loi chu k ln). - V vy, kim loi d dng nhng i s electron ha tr tr thnh cation, th hin tnh kh trong phn ng oxi ha kh. - Trong cng 1 nhm, s electron ha tr khng i, s lp electron tng ln, lm cho bn knh nguyn t tng ln, nn tng tc ht nhau tnh in gia electron ha tr v ht nhn gim. V vy, nguyn t kim loi d nhng electron hn, tnh kim loi tng. TIME
3. 3. Cu hi 2: Khi cc nguyn t kim loi lin kt vi nhau bng lin kt kim loi, hnh thnh cc loi cu trc mng tinh th. y l cu trc mng tinh th g? L P P H N G IT M K H TIME
4. 4. Cu hi ph: Em hy cho bit c bao nhiu loi cu trc mng tinh th, k tn? TIME
5. 5. Cu hi 1: Cc electron t do trong kim loi, cc electron ny c kh nng phn x mnh nhng bc x trong vng nh sng nhn thy. Nh cc electron m kim loi c tnh cht g? - Mt cht (kim loi) hp th nh sng mu no th ta s khng thy c mu (vd: than hp th ton b nh sng nhin thy nn c mu en). - Ngc lai, nu kim loi phn x nh sng mu no th ta s nh thy mu (vd: Ag gn nh phn x ton b vng nh sng nhn thy nn ta s thy c hn hp cc nh sng l nh sng trng) N H K I M TIME
6. 6. Cu hi 2: Kim loi no dn in tt nht ? - Kim loi dn in tt v cc electron trong tinh th kim loi chuyn ng hn lon. Khi thit lp 1 hiu in th U 2 u dy dn th cc electron t do ny lai chuyn ng c hng - Ag dn in tt nht, sau l Cu ri n Au nhng do Ag t nn ngi ta s dng Cu lm dy dn ph bin. B C TIME
7. 7. Cu hi 3.1: Kim loi no do nht? Cu hi 3.2: Kim loi no cng nht? V N G Tnh do ca cc kim loi do kh nng trt ln nhau gia cc lp ion kim loi trong mng tinh th. C R M Vi quy c kim cng c cng bng 10 th cng ca Cr l 9, cn Na l 0.4 (gn nh nn). TIME
8. 8. Cu 4: Kim loi no c tos v tonc cao nht? W O L F R A M Cu hi ph: ng dng ph bin ca W ? D Y T C B N G N TIME
9. 9. Cu hi 1 Cu hi 2 Cu hi 3
10. 10. Cu hi 1: Trong Pin in ha, cc m c gi l g? Ti thc hin qu trnh no? A N T O X H Cc m Thc hin qu trnh TIME
11. 11. Cu hi 2: y l qu trnh g? I N P H D U N G D C N H TIME
12. 12. Cu hi ph: Em hy cho bit tn ca cc in cc v cc qu trinh xy ra ti ? - Cc m catot: xy ra qu trnh kh - nhn e - Cc dng anot: xy ra qu trnh oxh cho e. TIME
13. 13. Cu hi 3: y l 1 phng php iu ch kim loi kim, kim th v nhm? I N P H N N G C H N Y TIME
14. 14. Cu hi 1: Kim loi no khi tc dng vi nc khong 80-100oC cho ra sn phm l oxit ca n v kh H2 M A G I V nguyn tc: Nhng kt ta Mg(OH)2 bm li trn b mt Mg, to thnh lp mng ngn, phn ng ng ngay tc khc. Nhng khi un ti khong 80-100oC th Mg(OH)2 b phn hy thnh MgO v H2O, phn ng tip tc din ra v to thnh MgO . 2 2 2( )Mg H O Mg OH H TIME
15. 15. Cu hi 2: a s cc kim loi nu tan trong dd axit mnh, c tnh oxh mnh nh HNO3 c hay H2SO4 c. Nhng ch c Au v Pt khng tan. Vy Au v Pt tan trong dd no? N C C T O A NG N 3 3 23 2Au HNO HCl AuCl NO H O TIME
16. 16. Cu hi 3: Nhng kim loi tc dng c dung dch baz mnh th oxit v hidroxit ca chng phi c tnh cht g ? L N G T H N Ch : kim loi tc dng vi baz nhng kim loi khng c tnh cht lng tnh, ch oxit va hidro ca chng mi c tnh lng tnh. TIME