{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0o sau \u0111\u00e2y s\u1ebd x\u1ea3y ra khi \u0111un n\u00f3ng m\u1ed9t l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng?","select":["A. Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng.","B. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng.","C. Th\u1ec3 t\u00edch c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng.","D. Kh\u1ed1i l\u01b0\u1ee3ng, tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 th\u1ebf t\u00edch \u0111\u1ec1u t\u0103ng."],"hint":"","explain":"<span class='basic_left'>Khi \u0111un n\u00f3ng m\u1ed9t l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng, ch\u1ea5t l\u1ecfng n\u1edf ra v\u1eady th\u1ec3 t\u00edch c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2451},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0o sau \u0111\u00e2y <b>kh\u00f4ng <\/b>x\u1ea3y ra khi l\u00e0m l\u1ea1nh m\u1ed9t ch\u1ea5t l\u1ecfng?","select":["A. Kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng kh\u00f4ng \u0111\u1ed5i.","B. Th\u1ec3 t\u00edch ch\u1ea5t l\u1ecfng gi\u1ea3m.","C. Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t l\u1ecfng gi\u1ea3m.","D. Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng."],"hint":"","explain":"<span class='basic_left'>Khi l\u00e0m l\u1ea1nh m\u1ed9t ch\u1ea5t l\u1ecfng th\u1ec3 t\u00edch gi\u1ea3m n\u00ean kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang s\u1ebd t\u0103ng.<br\/> <span class='basic_pink'>V\u1eady c\u00e2u C l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng kh\u00f4ng x\u1ea9y ra khi l\u00e0m l\u1ea1nh m\u1ed9t ch\u1ea5t l\u1ecfng. Ta ch\u1ecdn \u0111\u00e1p \u00e1n C.<\/span><\/span> ","column":1}]}],"id_ques":2452},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"Khi \u0111un n\u00f3ng m\u1ed9t b\u00ecnh th\u1ee7y tinh c\u00f3 ch\u1ee9a n\u01b0\u1edbc, \u0111\u1ea7u tr\u00ean c\u1eafm m\u1ed9t \u1ed1ng nh\u1ecf, h\u1ecfi m\u1ee9c n\u01b0\u1edbc trong \u1ed1ng thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o?","select":["A. Khi \u0111un, tho\u1ea1t ti\u00ean m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng d\u00e2ng l\u00ean, sau \u0111\u00f3 t\u1ee5t xu\u1ed1ng m\u1ed9t ch\u00fat","B. M\u1ef1c n\u01b0\u1edbc d\u00e2ng l\u00ean ngay l\u1eadp t\u1ee9c","C. M\u1ef1c n\u01b0\u1edbc kh\u00f4ng \u0111\u1ed5i","D. Khi \u0111un, tho\u1ea1t ti\u00ean m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng t\u1ee5t xu\u1ed1ng m\u1ed9t ch\u00fat, sau \u0111\u00f3 m\u1edbi d\u00e2ng l\u00ean cao h\u01a1n m\u1ee9c ban \u0111\u1ea7u"],"hint":"","explain":"<span class='basic_left'>B\u1edfi v\u00ec, b\u00ecnh th\u1ee7y tinh ti\u1ebfp x\u00fac v\u1edbi ng\u1ecdn l\u1eeda tr\u01b0\u1edbc, n\u1edf ra l\u00e0m cho ch\u1ea5t l\u1ecfng trong \u1ed1ng t\u1ee5t xu\u1ed1ng. Sau \u0111\u00f3, n\u01b0\u1edbc c\u0169ng n\u00f3ng l\u00ean v\u00e0 n\u1edf ra. V\u00ec n\u01b0\u1edbc n\u1edf nhi\u1ec1u h\u01a1n th\u1ee7y tinh, n\u00ean m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng l\u1ea1i d\u00e2ng l\u00ean v\u00e0 d\u00e2ng l\u00ean cao h\u01a1n m\u1ee9c ban \u0111\u1ea7u.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2453},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Hai b\u00ecnh c\u1ea7u $1$ v\u00e0 $2 $ c\u00f3 c\u00f9ng dung t\u00edch, c\u00f9ng ch\u1ee9a \u0111\u1ea7y n\u01b0\u1edbc. C\u00e1c \u1ed1ng th\u1ee7y tinh c\u1eafm \u1edf hai b\u00ecnh l\u1ea7n l\u01b0\u1ee3t c\u00f3 \u0111\u01b0\u1eddng k\u00ednh trong $d_1$ > $d_2$. Khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a hai b\u00ecnh l\u00ean nh\u01b0 nhau th\u00ec","select":["A. m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng th\u1ee7y tinh c\u1ee7a b\u00ecnh 1 d\u00e2ng l\u00ean cao h\u01a1n m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng th\u1ee7y tinh c\u1ee7a b\u00ecnh 2.","B. m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng th\u1ee7y tinh c\u1ee7a b\u00ecnh 2 d\u00e2ng l\u00ean cao h\u01a1n m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng th\u1ee7y tinh c\u1ee7a b\u00ecnh 1.","C. m\u1ef1c n\u01b0\u1edbc trong hai \u1ed1ng th\u1ee7y tinh d\u00e2ng l\u00ean nh\u01b0 nhau.","D. m\u1ef1c n\u01b0\u1edbc trong hai \u1ed1ng th\u1ee7y tinh kh\u00f4ng thay \u0111\u1ed5i."],"hint":"","explain":"<span class='basic_left'>Khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a hai b\u00ecnh l\u00ean nh\u01b0 nhau th\u00ec m\u1ef1c n\u01b0\u1edbc trong \u1ed1ng th\u1ee7y tinh c\u1ee7a b\u00ecnh 2 d\u00e2ng l\u00ean cao h\u01a1n m\u1ef1c n\u01b0\u1edbc trong \u00f4ng th\u1ee7y tinh c\u1ee7a b\u00ecnh 1.<br\/>V\u00ec th\u1ec3 t\u00edch t\u0103ng nh\u01b0 nhau nh\u01b0ng v\u00ec $d_1 > d_2$ n\u00ean \u0111\u1ed9 cao $h_1 < h_2$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2454},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y <b> kh\u00f4ng \u0111\u00fang<\/b>?","select":["A. Nhi\u1ec7t k\u1ebf y t\u1ebf c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3 ng\u01b0\u1eddi","B. Nhi\u1ec7t k\u1ebf th\u1ee7y ng\u00e2n c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 trong l\u00f2 luy\u1ec7n kim.","C. Nhi\u1ec7t k\u1ebf kim l\u1ecdai c\u00f3 th\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u00e0n l\u00e0 \u0111ang n\u00f3ng.","D. Nhi\u1ec7t k\u1ebf r\u01b0\u1ee3u c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a kh\u00ed quy\u1ec3n."],"hint":"","explain":"<span class='basic_left'>Nhi\u1ec7t k\u1ebf th\u1ee7y ng\u00e2n kh\u00f4ng th\u1ec3 d\u00f9ng \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 trong l\u00f2 luy\u1ec7n kim. V\u00ec nhi\u1ec7t \u0111\u1ed9 trong l\u00f2 luy\u1ec7n kim r\u1ea5t cao, l\u00e0m h\u1ecfng nhi\u1ec7t k\u1ebf th\u1ee7y ng\u00e2n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2455},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Nhi\u1ec7t k\u1ebf d\u1ea7u l\u00e0 m\u1ed9t d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0o sau \u0111\u00e2y? ","select":["A. S\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t r\u1eafn. ","B. S\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t l\u1ecfng.","C. S\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t kh\u00ed.","D. C\u1ea3 3 \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>Nhi\u1ec7t k\u1ebf d\u1ea7u l\u00e0 m\u1ed9t d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc s\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t l\u1ecfng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2456},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"Nhi\u1ec7t k\u1ebf kim lo\u1ea1i l\u00e0 m\u1ed9t d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0o sau \u0111\u00e2y? ","select":["A. S\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t r\u1eafn. ","B. S\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t l\u1ecfng.","C. S\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t kh\u00ed.","D. C\u1ea3 3 \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>Nhi\u1ec7t k\u1ebf kim lo\u1ea1i l\u00e0 m\u1ed9t d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc s\u1ef1 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a ch\u1ea5t r\u1eafn.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2457},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"C\u00f3 ba b\u00ecnh gi\u1ed1ng h\u1ec7t nhau \u0111\u1ef1ng m\u1ed9t th\u1ec3 t\u00edch b\u1eb1ng nhau c\u00e1c ch\u1ea5t sau: r\u01b0\u1ee3u, d\u1ea7u h\u1ecfa, th\u1ee7y ng\u00e2n \u1edf $20{}^\\circ C$ .<br\/>H\u1ecfi khi nung ba b\u00ecnh tr\u00ean $70{}^\\circ C$ th\u00ec b\u00ecnh n\u00e0o l\u1ea7n l\u01b0\u1ee3t c\u00f3 th\u1ec3 t\u00edch ch\u1ea5t l\u1ecfng ch\u1ee9a b\u00ean trong l\u1edbn h\u01a1n? ","select":["A. D\u1ea7u h\u1ecfa, r\u01b0\u1ee3u, th\u1ee7y ng\u00e2n","B. D\u1ea7u h\u1ecfa, th\u1ee7y ng\u00e2n, r\u01b0\u1ee3u ","C. R\u01b0\u1ee3u, d\u1ea7u h\u1ecfa, th\u1ee7y ng\u00e2n ","D. R\u01b0\u1ee3u, th\u1ee7y ng\u00e2n, d\u1ea7u h\u1ecfa"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 n\u1edf v\u00ec nhi\u1ec7t c\u1ee7a c\u00e1c ch\u1ea5t t\u0103ng d\u1ea7n l\u1ea7n l\u01b0\u1ee3t l\u00e0 r\u01b0\u1ee3u, d\u1ea7u h\u1ecfa v\u00e0 th\u1ee7y ng\u00e2n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2458},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"\u0110\u1ed5 \u0111\u1ea7y n\u01b0\u1edbc m\u00e0u v\u00e0o m\u1ed9t b\u00ecnh th\u1ee7y tinh, n\u00fat b\u00ecnh th\u1ee7y tinh b\u1eb1ng m\u1ed9t n\u00fat cao su c\u00f3 m\u1ed9t \u1ed1ng th\u1ee7y tinh xuy\u00ean qua n\u00fat.<br\/>M\u1ef1c n\u01b0\u1edbc m\u00e0u trong \u1ed1ng th\u1ee7y tinh s\u1ebd nh\u01b0 th\u1ebf n\u00e0o n\u1ebfu \u0111\u1eb7t to\u00e0n b\u1ed9 b\u00ecnh n\u01b0\u1edbc m\u00e0u v\u00e0o m\u1ed9t ch\u1eadu n\u01b0\u1edbc n\u00f3ng kho\u1ea3ng $70{}^\\circ C$ th\u00ec hi\u1ec7n t\u01b0\u1ee3ng g\u00ec x\u1ea3y ra? ","select":["A. Kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng g\u00ec x\u1ea3y ra ","B. M\u1ef1c n\u01b0\u1edbc trong \u1ed1ng th\u1ee7y tinh t\u0103ng l\u00ean ","C. M\u1ef1c n\u01b0\u1edbc trong \u1ed1ng th\u1ee7y tinh gi\u1ea3m xu\u1ed1ng","D. C\u00e1c ph\u01b0\u01a1ng \u00e1n \u0111\u01b0a ra \u0111\u1ec1u sai"],"hint":"","explain":"<span class='basic_left'>V\u00ec nhi\u1ec7t \u0111\u1ed9 t\u0103ng, n\u01b0\u1edbc d\u00e3n n\u1edf t\u0103ng l\u00ean.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2459},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Hai b\u00ecnh A v\u00e0 B gi\u1ed1ng, c\u00f9ng ch\u1ee9a \u0111\u1ea7y ch\u1ea5t l\u1ecfng. Ban \u0111\u1ea7u nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng trong hai b\u00ecnh l\u00e0 nh\u01b0 nhau. \u0110\u1eb7t hai b\u00ecnh v\u00e0o trong c\u00f9ng m\u1ed9t ch\u1eadu n\u01b0\u1edbc n\u00f3ng th\u00ec th\u1ea5y m\u1ef1c n\u01b0\u1edbc trong b\u00ecnh A d\u00e2ng cao h\u01a1n b\u00ecnh B.<br\/>K\u1ebft lu\u1eadn n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang khi n\u00f3i v\u1ec1 c\u00e1c ch\u1ea5t l\u1ecfng ch\u1ee9a trong hai b\u00ecnh?","select":["A. Hai b\u00ecnh A v\u00e0 B ch\u1ee9a c\u00f9ng m\u1ed9t lo\u1ea1i ch\u1ea5t l\u1ecfng","B. Ch\u1ea5t l\u1ecfng \u1edf hai b\u00ecnh kh\u00e1c nhau, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u00fang kh\u00e1c nhau ","C. Hai b\u00ecnh A v\u00e0 B ch\u1ee9a hai lo\u1ea1i ch\u1ea5t l\u1ecfng kh\u00e1c nhau","D. Ch\u1ea5t l\u1ecfng \u1edf hai b\u00ecnh gi\u1ed1ng nhau nh\u01b0ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u00fang kh\u00e1c nhau"],"hint":"","explain":"<span class='basic_left'> Hai b\u00ecnh A v\u00e0 B ch\u1ee9a hai lo\u1ea1i ch\u1ea5t l\u1ecfng kh\u00e1c nhau c\u00f3 \u0111\u1ed9 d\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2460}],"lesson":{"save":0,"level":2}}