{"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":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o sau \u0111\u00e2y v\u1eadt n\u00f3ng l\u00ean do truy\u1ec1n nhi\u1ec7t:","select":["A. Gi\u00e3 g\u1ea1o, g\u1ea1o n\u00f3ng l\u00ean.","B. Pittong d\u1ecbch chuy\u1ec3n trong xilanh, pittong n\u00f3ng l\u00ean.","C. Th\u1ea3 \u0111\u1ed3ng xu v\u00e0o c\u1ed1c n\u01b0\u1edbc n\u00f3ng, \u0111\u1ed3ng xu n\u00f3ng l\u00ean.","D. C\u1ecd x\u00e1t mi\u1ebfng kim lo\u1ea1i v\u00e0o b\u00e0n tay, mi\u1ebfng kim lo\u1ea1i n\u00f3ng l\u00ean."],"hint":"","explain":"<span class='basic_left'>Nhi\u1ec7t \u0111\u01b0\u1ee3c truy\u1ec1n t\u1eeb n\u01b0\u1edbc n\u00f3ng sang \u0111\u1ed3ng xu. L\u00fac \u0111\u00f3 d\u1ed3ng xu s\u1ebd c\u00f3 nhi\u1ec7t \u0111\u1ed9 t\u0103ng l\u00ean c\u00f2n n\u01b0\u1edbc s\u1ebd gi\u1ea3m nhi\u1ec7t \u0111\u1ed9. \u0111\u1ebfn khi n\u00e0o c\u1ea3 \u0111\u1ed3ng xu v\u00e0 n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 b\u1eb1ng nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2880},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"V\u1ec1 m\u00f9a \u0111\u00f4ng m\u1eb7c nhi\u1ec1u \u00e1o m\u1ecfng \u1ea5m h\u01a1n m\u1eb7c m\u1ed9t \u00e1o d\u00e0y, v\u00ec:","select":["A. \u00c1o d\u00e0y n\u1eb7ng n\u1ec1.","B. Gi\u1eefa c\u00e1c l\u1edbp \u00e1o m\u1ecfng c\u00f3 kh\u00f4ng kh\u00ed d\u1eabn nhi\u1ec7t k\u00e9m.","C. \u00c1o d\u00e0y truy\u1ec1n nhi\u1ec7t nhanh h\u01a1n.","D. \u00c1o m\u1ecfng nh\u1eb9 h\u01a1n."],"hint":"","explain":"<span class='basic_left'>M\u1eb7c nhi\u1ec1u \u00e1o m\u1ecfng s\u1ebd gi\u1ea3m s\u1ef1 m\u1ea5t nhi\u1ec7t t\u1eeb b\u00ean trong v\u00e0 gi\u1ea3m ti\u1ebfp x\u00fac nhi\u1ec7t \u0111\u1ed9 l\u1ea1nh t\u1eeb b\u00ean ngo\u00e0i, v\u00ec gi\u1eefa c\u00e1c l\u1edbp \u00e1o m\u1ecfng c\u00f3 kh\u00f4ng kh\u00ed,m\u00e0 kh\u00f4ng kh\u00ed d\u1eabn nhi\u1ec7t k\u00e9m h\u01a1n v\u1ea3i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2881},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Trong ba ch\u1ea5t nh\u00f4m, \u0111\u1ed3ng, th\u00e9p th\u00ec t\u00ednh d\u1eabn nhi\u1ec7t \u0111\u01b0\u1ee3c x\u1ebfp t\u1eeb t\u1ed1t \u0111\u1ebfn k\u00e9m h\u01a1n theo th\u1ee9 t\u1ef1:","select":["A. \u0110\u1ed3ng, nh\u00f4m, th\u00e9p.","B. \u0110\u1ed3ng, th\u00e9p, nh\u00f4m.","C. Th\u00e9p, nh\u00f4m, \u0111\u1ed3ng.","D. Th\u00e9p, \u0111\u1ed3ng, nh\u00f4m."],"hint":"","explain":"<span class='basic_left'>Ta c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a c\u00e1c kim lo\u1ea1i: <br\/>Th\u00e9p: 2860<br\/>\u0110\u1ed3ng: 17370<br\/>Nh\u00f4m: 8770<br\/>N\u00ean t\u00ednh d\u1eabn nhi\u1ec7t \u0111\u01b0\u1ee3c x\u1ebfp t\u1eeb t\u1ed1t \u0111\u1ebfn k\u00e9m h\u01a1n theo th\u1ee9 t\u1ef1: \u0110\u1ed3ng, nh\u00f4m, th\u00e9p. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2882},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Ng\u01b0\u1eddi ta th\u01b0\u1eddng dung ch\u1ea5t li\u1ec7u s\u1ee9 \u0111\u1ec3 l\u00e0m b\u00e1t \u0103n c\u01a1m v\u00ec: ","select":["A. S\u1ee9 l\u00e0m cho c\u01a1m ngon h\u01a1n.","B. S\u1ee9 r\u1ebb ti\u1ec1n.","C. S\u1ee9 d\u1eabn nhi\u1ec7t t\u1ed1t.","D. S\u1ee9 c\u00e1ch nhi\u1ec7t t\u1ed1t."],"hint":"","explain":"<span class='basic_left'>Ng\u01b0\u1eddi ta th\u01b0\u1eddng dung ch\u1ea5t li\u1ec7u s\u1ee9 \u0111\u1ec3 l\u00e0m b\u00e1t \u0103n c\u01a1m v\u00ec, s\u1ee9 \u0111\u1eabn nhi\u1ec7t k\u00e9m n\u00ean c\u00e1ch nhi\u1ec7t t\u1ed1t, khi c\u1ea7m b\u00e1t \u0103n kh\u00f4ng b\u1ecb n\u00f3ng. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2883},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Trong c\u00e1c c\u00e1ch s\u0103p x\u1ebfp v\u1eadt li\u1ec7u d\u00e2n nhi\u1ec7t t\u1eeb t\u1ed1t h\u01a1n \u0111\u00ean k\u00e9m h\u01a1n sau \u0111\u00e2y, c\u00e1ch n\u00e0o \u0111\u00fang?","select":["A. \u0110\u1ed3ng, n\u01b0\u1edbc, th\u1ee7y ng\u00e2n, kh\u00f4ng kh\u00ed.","B. \u0110\u1ed3ng, th\u1ee7y ng\u00e2n, n\u01b0\u1edbc, kh\u00f4ng kh\u00ed.","C. Th\u1ee7y ng\u00e2n, \u0111\u1ed3ng, n\u01b0\u1edbc, kh\u00f4ng kh\u00ed.","D. Kh\u00f4ng kh\u00ed, n\u01b0\u1edbc, th\u1ee7y ng\u00e2n, \u0111\u1ed3ng."],"hint":"","explain":"<span class='basic_left'>N\u1ebfu coi kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a kh\u00f4ng kh\u00ed l\u00e0 1 th\u00ec:<br\/>Kh\u00f4ng kh\u00ed: 1<br\/>N\u01b0\u1edbc : 25<br\/>Th\u1ee7y ng\u00e2n: 345<br\/>\u0110\u1ed3ng:17370<br\/>V\u1eady, ch\u1ecdn \u0111\u00e1p \u00e1n B: \u0110\u1ed3ng, th\u1ee7y ng\u00e2n, n\u01b0\u1edbc, kh\u00f4ng kh\u00ed.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2884},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"T\u1ea1i sao n\u1ed3i, xoong th\u01b0\u1eddng l\u00e0m b\u1eb1ng kim lo\u1ea1i c\u00f2n b\u00e1t, \u0111\u0129a th\u01b0\u1eddng l\u00e0m b\u1eb1ng s\u00e0nh s\u1ee9? ","select":["A. N\u1ed3i, xoong l\u00e0m b\u1eb1ng kim lo\u1ea1i c\u00f2n b\u00e1t, \u0111\u0129a l\u00e0m b\u1eb1ng s\u1ee9 \u0111\u1ec3 d\u1ec5 r\u1eeda.","B. N\u1ed3i, xoong d\u00f9ng \u0111\u1ec3 n\u1ea5u n\u00ean l\u00e0m b\u1eb1ng kim lo\u1ea1i \u0111\u1ec3 ch\u00fang d\u1eabn nhi\u1ec7t t\u1ed1t. B\u00e1t, \u0111\u0129a l\u00e0m b\u1eb1ng s\u00e1nh s\u1ee9 \u0111\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 truy\u1ec1n nhi\u1ec7t tr\u00e1nh b\u1ecb n\u00f3ng khi c\u1ea7m b\u1eb1ng tay.","C. N\u1ed3i, xoong l\u00e0m b\u1eb1ng kim lo\u1ea1i c\u00f2n b\u00e1t, \u0111\u0129a l\u00e0m b\u1eb1ng s\u1ee9 v\u00ec \u0111\u00f3 \u0111\u1ec1u l\u00e0 nh\u1eefng ch\u1ea5t truy\u1ec1n nhi\u1ec7t r\u1ea5t t\u1ed1t.","D. M\u1ed9t l\u00ed do kh\u00e1c."],"hint":"","explain":"<span class='basic_left'>N\u1ed3i, xoong d\u00f9ng \u0111\u1ec3 n\u1ea5u n\u00ean l\u00e0m b\u1eb1ng kim lo\u1ea1i \u0111\u1ec3 ch\u00fang d\u1eabn nhi\u1ec7t t\u1ed1t. B\u00e1t, \u0111\u0129a l\u00e0m b\u1eb1ng s\u00e1nh s\u1ee9 \u0111\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 truy\u1ec1n nhi\u1ec7t tr\u00e1nh b\u1ecb n\u00f3ng khi c\u1ea7m b\u1eb1ng tay.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2885},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"H\u00e3y t\u00ecm hi\u1ec3u v\u00e0 cho bi\u1ebft b\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 d\u1eabn nhi\u1ec7t l\u00e0 g\u00ec?","select":["A. L\u00e0 s\u1ef1 th\u1ef1c hi\u1ec7n c\u00f4ng.","B. L\u00e0 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.","C. L\u00e0 s\u1ef1 thay \u0111\u1ed5i th\u1ebf n\u0103ng.","D. L\u00e0 s\u1ef1 truy\u1ec1n \u0111\u1ed9ng n\u0103ng c\u1ee7a c\u00e1c h\u1ea1t v\u1eadt ch\u1ea5t khi ch\u00fang va ch\u1ea1m v\u00e0o nhau."],"hint":"","explain":"<span class='basic_left'>B\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 d\u1eabn nhi\u1ec7t l\u00e0 s\u1ef1 truy\u1ec1n \u0111\u1ed9ng n\u0103ng c\u1ee7a c\u00e1c h\u1ea1t v\u1eadt ch\u1ea5t khi ch\u00fang va ch\u1ea1m v\u00e0o nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2886},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Trong c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng sau \u0111\u00e2y, hi\u1ec7n t\u01b0\u1ee3ng n\u00e0o li\u00ean quan \u0111\u1ebfn d\u1eabn nhi\u1ec7t?","select":["A. Nh\u00fang m\u1ed9t \u0111\u1ea7u chi\u1ebfc th\u00eca b\u1eb1ng b\u1ea1c v\u00e0o m\u1ed9t c\u1ed1c n\u01b0\u1edbc s\u00f4i ta c\u00f3 c\u1ea3m gi\u00e1c tay b\u1ecb n\u00f3ng l\u00ean.","B. Khi \u0111un n\u01b0\u1edbc trong \u1ea5m, n\u01b0\u1edbc s\u1ebd n\u00f3ng d\u1ea7n l\u00ean n\u1ebfu th\u00f2 m\u1ed9t ng\u00f3n tay v\u00e0o n\u01b0\u1edbc ta th\u1ea5y \u1ea5m tay.","C. D\u00f9ng m\u1ed9t que s\u1eaft d\u00e0i \u0111\u01b0a m\u1ed9t \u0111\u1ea7u v\u00e0o b\u1ebfp than \u0111ang ch\u00e1y \u0111\u1ecf, m\u1ed9t l\u00fac sau c\u1ea7m v\u00e0o \u0111\u1ea7u c\u00f2n l\u1ea1i ta th\u1ea5y n\u00f3ng tay.","D. C\u1ea3 ba tr\u01b0\u1eddng h\u1ee3p n\u00eau ra \u0111\u1ec1u li\u00ean qua \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng d\u1eabn nhi\u1ec7t."],"hint":"","explain":"<span class='basic_left'>C\u1ea3 ba tr\u01b0\u1eddng h\u1ee3p n\u00eau ra \u0111\u1ec1u li\u00ean qua \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng d\u1eabn nhi\u1ec7t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2887},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" \u1ede v\u00f9ng kh\u00ed h\u1eadu l\u1ea1nh, ng\u01b0\u1eddi ta hay l\u00e0m c\u1eeda s\u1ed5 c\u00f3 hai hay ba l\u1edbp k\u00ednh. V\u00ec sao?","select":["A. \u0110\u1ec3 t\u0103ng th\u00eam b\u1ec1 d\u00e0y c\u1ee7a k\u00ednh.","B. \u0110\u1ec3 tr\u00e1nh gi\u00f3 l\u1ea1nh th\u1ed5i v\u00e0o nh\u00e0.","C. Kh\u00f4ng kh\u00ed gi\u1eefa hai t\u1ea5m k\u00ednh c\u00e1ch nhi\u1ec7t t\u1ed1t l\u00e0m gi\u1ea3m s\u1ef1 m\u1ea5t nhi\u1ec7t trong nh\u00e0.","D. \u0110\u1ec1 ph\u00f2ng m\u1ed9t l\u1edbp k\u00ednh b\u1ecb v\u1ee1 c\u00f2n l\u1edbp k\u00ednh kia."],"hint":"","explain":"<span class='basic_left'>\u1ede v\u00f9ng kh\u00ed h\u1eadu l\u1ea1nh, ng\u01b0\u1eddi ta hay l\u00e0m c\u1eeda s\u1ed5 c\u00f3 hai hay ba l\u1edbp k\u00ednh \u0111\u1ec3 kh\u00f4ng kh\u00ed gi\u1eefa hai t\u1ea5m k\u00ednh c\u00e1ch nhi\u1ec7t t\u1ed1t l\u00e0m gi\u1ea3m s\u1ef1 m\u1ea5t nhi\u1ec7t trong nh\u00e0. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2888},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"V\u00ec sao c\u00e1c b\u1ed3n ch\u1ee9a x\u0103ng d\u1ea7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u01a1n m\u00e0u nh\u0169 tr\u1eafng s\u00e1ng m\u00e0 kh\u00f4ng s\u01a1n c\u00e1c m\u00e0u kh\u00e1c? Ch\u1ecdn c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang.","select":["A. \u0110\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 b\u1ee9c x\u1ea1 nhi\u1ec7t.","B. \u0110\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 d\u1eabn nhi\u1ec7t.","C. \u0110\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 \u0111\u1ed1i l\u01b0u.","D. \u0110\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 h\u1ea5p th\u1ee5 nhi\u1ec7t."],"hint":"","explain":"<span class='basic_left'>B\u1ed3n ch\u1ee9a x\u0103ng d\u1ea7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u01a1n m\u00e0u nh\u0169 tr\u1eafng s\u00e1ng \u0111\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 h\u1ea5p th\u1ee5 nhi\u1ec7t t\u1eeb \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi, tr\u00e1nh l\u00e0 cho x\u0103ng b\u1ecb n\u00f3ng, d\u1ec5 ch\u00e1y n\u1ed5. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2889},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"C\u00f3 hai que d\u00e0i b\u1eb1ng nhau, m\u1ed9t que b\u1eb1ng th\u1ee7y tinh, que kia b\u1eb1ng nh\u00f4m. L\u1ea7n l\u01b0\u1ee3t \u0111\u01b0a m\u1ed9t \u0111\u1ea7u c\u1ee7a m\u1ed7i que v\u00e0o ng\u1ecdn l\u1eeda, tay c\u1ea7m \u0111\u1ea7u kia.","select":["A. Khi d\u1eabn nhi\u1ec7t, v\u00f9ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao m\u1edf r\u1ed9ng ra d\u1ecdc theo que cho t\u1edbi tay c\u1ea7m.","B. \u0110\u1ed1i v\u1edbi c\u1ea3 hai que, m\u1ed9t l\u00fac sau tay c\u1ea7m m\u1edbi th\u1ea5y n\u00f3ng.","C. Khi \u0111\u01b0a \u0111\u1ea7u que nh\u00f4m v\u00e0o ng\u1ecdn l\u1eeda th\u00ec tay c\u1ea7m s\u1ebd th\u1ea5y n\u00f3ng ngay.","D. Nh\u00f4m d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n th\u1ee7y tinh."],"hint":"","explain":"<span class='basic_left'>Khi \u0111\u01b0a \u0111\u1ea7u que nh\u00f4m v\u00e0o ng\u1ecdn l\u1eeda th\u00ec tay c\u1ea7m s\u1ebd th\u1ea5y n\u00f3ng ngay c\u00f2n v\u1edbi th\u1ee7y tinh th\u00ec r\u1ea5t l\u00e2u sau m\u1edbi n\u00f3ng, do nh\u00f4m d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n th\u1ee7y tinh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2890},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Cho c\u00e1c ch\u1ea5t sau: g\u1ed7, n\u01b0\u1edbc, th\u00e9p, th\u1ee7y tinh, nh\u00f4m, b\u1ea1c. Th\u1ee9 t\u1ef1 s\u1eafp x\u1ebfp n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang v\u1edbi kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t theo quy lu\u1eadt gi\u1ea3m d\u1ea7n?","select":["A. B\u1ea1c - th\u1ee7y tinh - nh\u00f4m - th\u00e9p - n\u01b0\u1edbc - g\u1ed7.","B. B\u1ea1c - th\u00e9p - th\u1ee7y tinh - nh\u00f4m - n\u01b0\u1edbc - g\u1ed7.","C. B\u1ea1c - nh\u00f4m - th\u00e9p - th\u1ee7y tinh - n\u01b0\u1edbc - g\u1ed7.","D. B\u1ea1c - nh\u00f4m - g\u1ed7 - th\u00e9p - th\u1ee7y tinh - n\u01b0\u1edbc."],"hint":"","explain":"<span class='basic_left'>Kim lo\u1ea1i d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n c\u00e1c ch\u1ea5t kh\u00e1c, trong \u0111\u00f3 b\u1ea1c l\u00e0 ch\u1ea5t d\u1eabn nhi\u1ec7t t\u1ed1t nh\u1ea5t, v\u00e0 theo th\u1ee9 t\u1ef1 c\u1ee7a d\u00e3y, c\u00e1ch ch\u1ea5t c\u00e0ng v\u1ec1 cu\u1ed1i kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u00e0ng k\u00e9m.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2891},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Ch\u1ecdn c\u00e2u sai.","select":["A. Ch\u1ea5t kh\u00ed d\u1eabn nhi\u1ec7t c\u00f2n k\u00e9m h\u01a1n ch\u1ea5t l\u1ecfng.","B. Ch\u1ea5t r\u1eafn d\u1eabn nhi\u1ec7t t\u1ed1t.","C. Ch\u00e2n kh\u00f4ng d\u1eabn nhi\u1ec7t k\u00e9m nh\u1ea5t.","D. Ch\u1ea5t l\u1ecfng d\u1eabn nhi\u1ec7t k\u00e9m."],"hint":"","explain":"<span class='basic_left'>Ch\u00e2n kh\u00f4ng kh\u00f4ng d\u1eabn nhi\u1ec7t v\u00ec kh\u00f4ng c\u00f3 v\u1eadt ch\u1ea5t, kh\u00f4ng th\u1ec3 truy\u1ec1n dao \u0111\u1ed9ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2892},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Trong s\u1ef1 d\u1eabn nhi\u1ec7t, nhi\u1ec7t t\u1ef1 truy\u1ec1n:","select":["A. T\u1eeb v\u1eadt c\u00f3 nhi\u1ec7t n\u0103ng l\u1edbn h\u01a1n sang v\u1eadt c\u00f3 nhi\u1ec7t n\u0103ng nh\u1ecf h\u01a1n.","B. T\u1eeb v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn h\u01a1n sang v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng nh\u1ecf h\u01a1n.","C. T\u1eeb v\u1eadt c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n sang v\u1eadt c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n.","D. C\u1ea3 3 c\u00e2u tr\u1ea3 l\u1eddi tr\u00ean \u0111\u1ec1u \u0111\u00fang."],"hint":"","explain":"<span class='basic_left'>Trong s\u1ef1 d\u1eabn nhi\u1ec7t, nhi\u1ec7t t\u1ef1 truy\u1ec1n t\u1eeb v\u1eadt c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n sang v\u1eadt c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2893},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Trong c\u00e1c t\u00ednh hu\u1ed1ng sau \u0111\u00e2y, t\u00ednh hu\u1ed1ng n\u00e0o c\u1ed1c s\u1ebd b\u1ecb n\u1ee9t?","select":["A. R\u00f3t n\u01b0\u1edbc s\u00f4i t\u1eeb t\u1eeb v\u00e0o c\u1ed1c th\u1ee7y tinh c\u00f3 th\u00e0nh m\u1ecfng.","B. R\u00f3t n\u01b0\u1edbc s\u00f4i \u0111\u1ed9t ng\u1ed9t v\u00e0o m\u1ed9t c\u1ed1c b\u1eb1ng nh\u00f4m.","C. R\u00f3t n\u01b0\u1edbc s\u00f4i \u0111\u1ed9t ng\u1ed9t v\u00e0o c\u1ed1c th\u1ee7y tinh trong \u0111\u00f3 \u0111\u00e3 \u0111\u1ec3 s\u1eb5n m\u1ed9t th\u00eca b\u1eb1ng b\u1ea1c (ho\u1eb7c nh\u00f4m).","D. R\u00f3t n\u01b0\u1edbc s\u00f4i \u0111\u1ed9t ng\u1ed9t v\u00e0o c\u1ed1c th\u1ee7y tinh c\u00f3 th\u00e0nh d\u1ea7y."],"hint":"","explain":"<span class='basic_left'>R\u00f3t n\u01b0\u1edbc s\u00f4i \u0111\u1ed9t ng\u1ed9t v\u00e0o c\u1ed1c th\u1ee7y tinh c\u00f3 th\u00e0nh d\u1ea7y s\u1ebd l\u00e0m thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t nhi\u1ec7t \u0111\u1ed9 b\u00ean trong c\u1ed1c, d\u1eabn \u0111\u1ebfn l\u1edbp b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i c\u1ed1c c\u00f3 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t d\u1eabn \u0111\u1ebfn d\u00e3n n\u1edf nhi\u1ec7t kh\u00f4ng \u0111\u1ec1u l\u00e0m n\u1ee9t c\u1ed1c.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2894},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"V\u00ec l\u00ed do g\u00ec m\u00e0 khi \u0111un n\u01b0\u1edbc b\u1eb1ng \u1ea5m nh\u00f4m v\u00e0 b\u1eb1ng \u1ea5m \u0111\u1ea5t tr\u00ean c\u00f9ng m\u1ed9t b\u1ebfp l\u1eeda th\u00ec n\u01b0\u1edbc trong \u1ea5m nh\u00f4m ch\u00f3ng s\u00f4i h\u01a1n? ","select":["A. V\u00ec nh\u00f4m m\u1ecfng h\u01a1n.","B. V\u00ec nh\u00f4m c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng nh\u1ecf h\u01a1n.","C. V\u00ec nh\u00f4m c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang nh\u1ecf h\u01a1n.","D. V\u00ec nh\u00f4m c\u00f3 t\u00ednh d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n."],"hint":"","explain":"<span class='basic_left'>V\u00ec nh\u00f4m d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n \u0111\u1ea5t n\u00ean n\u01b0\u1edbc nhanh s\u00f4i h\u01a1n. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2895},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"B\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 d\u1eabn nhi\u1ec7t l\u00e0 g\u00ec?","select":["A. L\u00e0 s\u1ef1 thay \u0111\u1ed5i th\u1ebf n\u0103ng.","B. L\u00e0 s\u1ef1 truy\u1ec1n \u0111\u1ed9ng n\u0103ng c\u1ee7a c\u00e1c h\u1ea1t v\u1eadt ch\u1ea5t khi ch\u00fang va ch\u1ea1m v\u00e0o nhau.","C. L\u00e0 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.","D. L\u00e0 s\u1ef1 th\u1ef1c hi\u1ec7n c\u00f4ng."],"hint":"","explain":"<span class='basic_left'>B\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 d\u1eabn nhi\u1ec7t l\u00e0 s\u1ef1 truy\u1ec1n \u0111\u1ed9ng n\u0103ng c\u1ee7a c\u00e1c h\u1ea1t v\u1eadt ch\u1ea5t khi ch\u00fang va ch\u1ea1m v\u00e0o nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2896},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"M\u1ed9t b\u00e0n g\u1ed7 v\u00e0 m\u1ed9t b\u00e0n nh\u00f4m c\u00f9ng m\u1ed9t nhi\u1ec7t \u0111\u1ed9. Khi ta s\u1edd tay v\u00e0o m\u1eb7t b\u00e0n ta c\u1ea3m th\u1ea5y m\u1eb7t b\u00e0n nh\u00f4m l\u1ea1nh h\u01a1n m\u1eb7t b\u00e0n g\u1ed7. Gi\u1ea3i th\u00edch t\u1ea1i sao? ","select":["A. Nh\u00f4m d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n g\u1ed7 n\u00ean khi s\u1edd v\u00e0o b\u00e0n nh\u00f4m ta b\u1ecb m\u1ea5t nhi\u1ec7t n\u0103ng nhi\u1ec1u h\u01a1n khi ta s\u1edd b\u00e0n g\u1ed7.","B. Tay ta l\u00e0m nhi\u1ec7t \u0111\u1ed9 m\u1eb7t b\u00e0n nh\u00f4m gi\u1ea3m xu\u1ed1ng v\u00e0 l\u00e0m nhi\u1ec7t \u0111\u1ed9 m\u1eb7t b\u00e0n g\u1ed7 t\u0103ng l\u00ean.","C. Ta nh\u1eadn nhi\u1ec7t l\u01b0\u1ee3ng t\u1eeb b\u00e0n nh\u00f4m \u00edt h\u01a1n t\u1eeb b\u00e0n g\u1ed7.","D. Tay ta l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a hai b\u00e0n, nh\u01b0ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u00e0n nh\u00f4m t\u0103ng \u00edt h\u01a1n."],"hint":"","explain":"<span class='basic_left'>Nh\u00f4m d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n g\u1ed7 n\u00ean khi s\u1edd v\u00e0o b\u00e0n nh\u00f4m ta b\u1ecb m\u1ea5t nhi\u1ec7t n\u0103ng nhi\u1ec1u h\u01a1n khi ta s\u1edd b\u00e0n g\u1ed7. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2897},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"C\u00e1c ch\u1ea5t sau \u0111\u00e2y: g\u1ed7, n\u01b0\u1edbc \u0111\u00e1, b\u1ea1c, nh\u00f4m. Th\u1ee9 t\u1ef1 s\u1eafp x\u1ebfp n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang v\u1edbi kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t theo quy lu\u1eadt t\u0103ng d\u1ea7n?","select":["A. G\u1ed7, n\u01b0\u1edbc \u0111\u00e1, b\u1ea1c, nh\u00f4m.","B. G\u1ed7, n\u01b0\u1edbc \u0111\u00e1, nh\u00f4m, b\u1ea1c.","C. N\u01b0\u1edbc \u0111\u00e1, b\u1ea1c, nh\u00f4m, g\u1ed7.","D. B\u1ea1c, nh\u00f4m, n\u01b0\u1edbc \u0111\u00e1, g\u1ed7."],"hint":"","explain":"<span class='basic_left'>Kim lo\u1ea1i d\u1eabn nhi\u1ec7t t\u1ed1t nh\u1ea5t sau \u0111\u00f3 \u0111\u1ebfn n\u01b0\u1edbc \u0111\u00e1 v\u00e0 g\u1ed7. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2898},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Ch\u1ecdn c\u00e2u sai:","select":["A. Ch\u1ea5t kh\u00ed \u0111\u1eadm \u0111\u1eb7c d\u1eabn nhi\u1ec7t t\u1ed1t h\u01a1n ch\u1ea5t kh\u00ed lo\u00e3ng.","B. S\u1ef1 truy\u1ec1n nhi\u1ec7t b\u1eb1ng h\u00ecnh th\u1ee9c d\u1eabn nhi\u1ec7t ch\u1ee7 y\u1ebfu s\u1ea3y ra v\u1edbi ch\u1ea5t r\u1eafn.","C. B\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 truy\u1ec1n nhi\u1ec7t trong ch\u1ea5t l\u1ecfng, ch\u1ea5t r\u1eafn v\u00e0 ch\u1ea5t kh\u00ed n\u00f3i chung l\u00e0 gi\u1ed1ng nhau.","D. Kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a m\u1ecdi ch\u1ea5t r\u1eafn l\u00e0 nh\u01b0 nhau."],"hint":"","explain":"<span class='basic_left'>Kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a m\u1ecdi ch\u1ea5t r\u1eafn l\u00e0 kh\u00e1c nhau. V\u00ed d\u1ee5 nh\u01b0 nh\u00f4m v\u00e0 th\u1ee7y tinh c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t kh\u00e1c nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2899}],"lesson":{"save":0,"level":2}}