{"id":1173,"date":"2021-10-09T00:49:03","date_gmt":"2021-10-09T00:49:03","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=1173"},"modified":"2021-10-14T22:12:07","modified_gmt":"2021-10-14T15:12:07","slug":"hai-loai-dien-tich-la-gi-ban-co-biet-kien-thuc-ly-7-hay-nhat","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/hai-loai-dien-tich-la-gi-ban-co-biet-kien-thuc-ly-7-hay-nhat\/","title":{"rendered":"Hai lo\u1ea1i \u0111i\u1ec7n t\u00edch l\u00e0 g\u00ec b\u1ea1n c\u00f3 bi\u1ebft? Ki\u1ebfn th\u1ee9c l\u00fd 7 hay nh\u1ea5t"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi v\u1eadt l\u00fd h\u1ecdc, b\u1ea5t c\u1ee9 kh\u00e1i ni\u1ec7m g\u00ec \u0111\u01b0a ra \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111i k\u00e8m v\u1edbi th\u00ed nghi\u1ec7m. \u0110\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd trong ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc l\u1edbp 7, ch\u00fang r\u1ed9ng l\u1edbn nh\u01b0ng c\u0169ng r\u1ea5t g\u1ea7n g\u0169i. B\u00e0i h\u1ecdc h\u00f4m nay m\u00e0 ch\u00fang t\u00f4i mu\u1ed1n mang \u0111\u1ebfn cho b\u1ea1n \u0111\u1ecdc ch\u00ednh l\u00e0 ki\u1ebfn th\u1ee9c v\u1ec1 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch. \u0110\u00e2y l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c th\u00fa v\u1ecb nh\u01b0ng kh\u00f4ng h\u1ec1 d\u1ec5 d\u00e0ng, n\u00ean b\u1ea1n <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a> n\u00e0o c\u0169ng n\u00ean ch\u00fa \u00fd. Ch\u00fang t\u00f4i s\u1ebd \u0111\u01b0a ra th\u00ed nghi\u1ec7m, gi\u1ea3i th\u00edch v\u00e0 \u0111i \u0111\u1ebfn k\u1ebft lu\u1eadn d\u1ec5 hi\u1ec3u. Ngo\u00e0i ra gi\u00fap c\u00e1c b\u1ea1n gi\u1ea3i b\u00e0i t\u1eadp v\u1eadt l\u00fd 7 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch \u0111\u1ec3 b\u1ea1n tham kh\u1ea3o. C\u00f9ng b\u1eaft \u0111\u1ea7u th\u00f4i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chia s\u1ebb v\u1ec1 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00ed nghi\u1ec7m v\u1ec1 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea7u ti\u00ean, b\u1ea1n k\u1eb9p hai m\u1ea3nh nilon v\u00e0o th\u00e2n b\u00fat ch\u00ec, sau \u0111\u00f3 b\u1ea1n nh\u1ea5c l\u00ean. Khi \u0111\u00f3 b\u1ea1n th\u1ea5y r\u1eb1ng, hai m\u1ea3nh nilon n\u00e0y kh\u00f4ng \u0111\u1ea9y ho\u1eb7c h\u00fat nhau. Ch\u00fang kh\u00f4ng t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, b\u1ea1n h\u1ea3i hai m\u1ea3nh nilon n\u00e0y xu\u1ed1ng m\u1eb7t b\u00e0n. S\u1eed d\u1ee5ng m\u1ed9t mi\u1ebfng v\u1ea3i b\u1eb1ng len kh\u00f4, b\u1ea1n c\u1ecd x\u00e1t hai m\u1ea3nh n\u00e0y nhi\u1ec1u l\u1ea7n. Sau \u0111\u00f3, b\u1ea1n c\u1ea7m th\u00e2n b\u00fat ch\u00ec nh\u1ea5c l\u00ean. K\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c, hai mi\u1ebfng nilon \u0111\u1ea9y nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sang m\u1ed9t th\u00ed nghi\u1ec7m kh\u00e1c. B\u1ea1n s\u1eed d\u1ee5ng m\u1ea3nh v\u1ea3i kh\u00f4 c\u1ecd x\u00e1t hai thanh nh\u1ef1a gi\u1ed1ng nhau, s\u1eabm m\u00e0u. B\u1ea1n \u0111\u1eb7t m\u1ed9t trong hai thanh n\u00e0y l\u00ean tr\u00ean tr\u1ee5c nh\u1ecdn \u0111\u1ec3 n\u00f3 c\u00f3 th\u1ec3 quay d\u1ec5 h\u01a1n. \u0110\u01b0a c\u00e1c \u0111\u1ea7u kim lo\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ecd x\u00e1t g\u1ea7n v\u1edbi nhau h\u01a1n. L\u00fac n\u00e0y, b\u1ea1n s\u1ebd th\u1ea5y ch\u00fang \u0111\u1ea9y nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eadn x\u00e9t v\u1ec1 th\u00ed nghi\u1ec7m: Hai v\u1eadt gi\u1ed1ng nh\u01b0 nhau, \u0111\u01b0\u1ee3c c\u1ecd x\u00e1t nh\u01b0 nhau th\u00ec s\u1ebd mang \u0111i\u1ec7n t\u00edch c\u00f9ng lo\u1ea1i. Khi n\u00e0y, ch\u00fang s\u1ebd \u0111\u1ea9y nhau khi \u0111\u01b0\u1ee3c \u0111\u1eb7t g\u1ea7n v\u1edbi nhau. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf h\u00ecnh th\u00e0nh \u0111\u1ecbnh ngh\u0129a hai lo\u1ea1i \u0111i\u1ec7n t\u00edch ph\u00e1t tri\u1ec3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eady hai lo\u1ea1i \u0111i\u1ec7n t\u00edch l\u00e0 g\u00ec?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch. C\u00e1c v\u1eadt m\u00e0 \u0111\u01b0\u1ee3c mang \u0111i\u1ec7n t\u00edch c\u00f9ng d\u1ea5u th\u00ec ch\u00fang s\u1ebd \u0111\u1ea9y nhau. C\u00f2n c\u00e1c v\u1eadt m\u00e0 mang \u0111i\u1ec7n t\u00edch kh\u00e1c lo\u1ea1i th\u00ec ch\u00fang s\u1ebd h\u00fat nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quy \u01b0\u1edbc c\u1ee7a hai lo\u1ea1i \u0111i\u1ec7n t\u00edch n\u00e0y c\u0169ng v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n. \u0110\u1ed1i v\u1edbi \u0111i\u1ec7n t\u00edch c\u1ee7a thanh th\u1ee7y tinh c\u1ecd x\u00e1t v\u00e0o l\u1ee5a, ch\u00fang mang \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng (+). C\u00f2n \u0111\u1ed1i v\u1edbi \u0111i\u1ec7n t\u00edch c\u1ee7a thanh nh\u1ef1a s\u1eabm m\u00e0u khi \u0111\u01b0\u1ee3c c\u1ecd x\u00e1t v\u00e0o v\u1ea3i kh\u00f4, ch\u00fang mang \u0111i\u1ec7n t\u00edch \u00e2m (-).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u01a1 l\u01b0\u1ee3c th\u00f4ng tin c\u1ea5u t\u1ea1o nguy\u00ean t\u1eed<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi hai lo\u1ea1i \u0111i\u1ec7n t\u00edch l\u1edbp 7, \u1edf t\u00e2m c\u1ee7a nguy\u00ean t\u1eed s\u1ebd c\u00f3 m\u1ed9t h\u1ea1t nh\u00e2n. H\u1ea1t nh\u00e2n n\u00e0y mang \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Xung quanh h\u1ea1t nh\u00e2n s\u1ebd c\u00f3 c\u00e1c e mang \u0111i\u1ec7n t\u00edch \u00e2m. Ch\u00fang chuy\u1ec3n \u0111\u1ed9ng nhanh ch\u00f3ng, t\u1ea1o th\u00e0nh l\u1edbp v\u1ecf c\u1ee7a nguy\u00ean t\u1eed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed5ng c\u00e1c \u0111i\u1ec7n t\u00edch \u00e2m c\u1ee7a c\u00e1c e s\u1ebd c\u00f3 tr\u1ecb s\u1ed1 tuy\u1ec7t \u0111\u1ed1i, b\u1eb1ng v\u1edbi \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng c\u1ee7a h\u1ea1t nh\u00e2n. B\u1edfi v\u1eady, b\u00ecnh th\u01b0\u1eddng nguy\u00ean t\u1eed s\u1ebd trung h\u00f2a v\u1ec1 \u0111i\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c electron t\u1ef1 do c\u00f3 kh\u1ea3 n\u0103ng d\u1ecbch chuy\u1ec3n t\u1eeb ph\u00eda nguy\u00ean t\u1eed n\u00e0y sang \u0111\u1ebfn ph\u00eda nguy\u00ean t\u1eed kh\u00e1c. Ch\u00fang d\u1ecbch chuy\u1ec3n t\u1eeb v\u1eadt n\u00e0y sang v\u1eadt kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00ed nghi\u1ec7m v\u1ec1 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb \u0111\u00f3, ta \u0111i \u0111\u1ebfn k\u1ebft lu\u1eadn v\u1ec1 2 lo\u1ea1i \u0111i\u1ec7n t\u00edch sau: Nguy\u00ean t\u1eed bao g\u1ed3m h\u1ea1t nh\u00e2n mang \u0111i\u1ec7n d\u01b0\u01a1ng, c\u00e1c e mang \u0111i\u1ec7n \u00e2m v\u00e0 chuy\u1ec3n \u0111\u1ed9ng xung quanh h\u1ea1t nh\u00e2n. M\u1ed9t v\u1eadt \u0111\u01b0\u1ee3c coi l\u00e0 nhi\u1ec5m \u0111i\u1ec7n \u00e2m n\u1ebfu nh\u01b0 ch\u00fang nh\u1eadn th\u00eam electron. M\u1ed9t v\u1eadt \u0111\u01b0\u1ee3c coi l\u00e0 nhi\u1ec5m \u0111i\u1ec7n d\u01b0\u01a1ng n\u1ebfu ch\u00fang m\u1ea5t b\u1edbt electron.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed5ng k\u1ebft b\u00e0i h\u1ecdc hai lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 t\u1ed5ng k\u1ebft th\u00f4ng tin v\u1ec1 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch. Khuy\u1ebfn kh\u00edch c\u00e1c em ch\u00e9p l\u1ea1i ph\u1ea7n t\u00f3m t\u1eaft n\u00e0y theo d\u1ea1ng s\u01a1 \u0111\u1ed3 t\u01b0 duy \u0111\u1ec3 c\u00f3 th\u1ec3 hi\u1ec3u b\u00e0i t\u1eadp \u0111\u01b0\u1ee3c k\u1ef9 c\u00e0ng v\u00e0 s\u00e2u s\u1eafc h\u01a1n. \u0110\u00e2y l\u00e0 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">ph\u01b0\u01a1ng ph\u00e1p h\u1ecdc<\/a> t\u1eadp gi\u00fap c\u00e1c em h\u1ec7 th\u1ed1ng l\u1ea1i ki\u1ebfn th\u1ee9c t\u1ed1t nh\u1ea5t. Th\u1ebf n\u00ean \u0111\u1eebng ch\u1ee7 quan m\u00e0 b\u1ecf qua nh\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hai lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n t\u00edch \u00e2m<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n t\u00edch d\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u01b0\u01a1ng t\u00e1c gi\u1eefa hai lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f9ng lo\u1ea1i th\u00ec \u0111\u1ea9y nhau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c lo\u1ea1i th\u00ec h\u00fat nhau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u01a1 l\u01b0\u1ee3c c\u1ea5u t\u1ea1o nguy\u00ean t\u1eed<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 m\u1ed9t h\u1ea1t nh\u00e2n mang \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Xung quanh h\u1ea1t nh\u00e2n c\u00f3 c\u00e1c electron mang \u0111i\u1ec7n t\u00edch \u00e2m<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ecnh th\u01b0\u1eddng nguy\u00ean t\u1eed trung h\u00f2a v\u1ec1 \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eadt nhi\u1ec5m \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c2m n\u1ebfu nh\u1eadn th\u00eam electron<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u01a1ng n\u1ebfu nh\u01b0 m\u1ea5t b\u1edbt electron<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1edf r\u1ed9ng ki\u1ebfn th\u1ee9c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi ki\u1ebfn th\u1ee9c v\u1ec1 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch, nh\u1eefng th\u00f4ng tin m\u00e0 ch\u00fang t\u00f4i \u0111\u01b0a \u0111\u1ebfn b\u00ean tr\u00ean l\u00e0 \u0111\u00e3 \u0111\u1ee7. Th\u1ebf nh\u01b0ng n\u1ebfu b\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam nhi\u1ec1u h\u01a1n, m\u1ed9t s\u1ed1 th\u00f4ng tin d\u01b0\u1edbi \u0111\u00e2y c\u00f3 th\u1ec3 c\u1ea7n thi\u1ebft cho b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n t\u00edch l\u00e0 m\u1ed9t t\u00ednh ch\u1ea5t v\u00f4 c\u00f9ng c\u01a1 b\u1ea3n. Ch\u00fang c\u00f3 t\u00ednh ch\u1ea5t kh\u00f4ng \u0111\u1ed5i c\u1ee7a m\u1ed9t s\u1ed1 h\u1ea1t h\u1ea1 nguy\u00ean t\u1eed. \u0110\u00e2y l\u00e0 \u0111\u1eb7c tr\u01b0ng cho t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111i\u1ec7n t\u1eeb c\u1ee7a ch\u00fang. \u0110i\u1ec7n t\u00edch s\u1ebd t\u1ea1o ra tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb, ch\u1ecbu s\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb. Nh\u1eefng s\u1ef1 t\u01b0\u01a1ng t\u00e1c n\u00e0y l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra l\u1ef1c \u0111i\u1ec7n t\u1eeb. B\u1edfi v\u00ec n\u00f3 chuy\u1ec3n \u0111\u1ed9ng ho\u1eb7c \u0111\u1ee9ng y\u00ean so v\u1edbi tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb n\u00e0y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n t\u00edch c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c h\u1ea1t mang \u0111i\u1ec7n v\u00f4 c\u00f9ng nh\u1ecf. Ch\u00fang nh\u01b0 l\u00e0 m\u1ed9t ch\u1ea5t \u0111i\u1ec3m, th\u1ebf n\u00ean \u0111i\u1ec7n t\u00edch c\u00f2n c\u00f3 t\u00ean g\u1ecdi kh\u00e1c. \u0110\u00f3 l\u00e0 \u0111i\u1ec7n t\u00edch \u0111i\u1ec3m. Nh\u1eefng \u0111i\u1ec7n t\u00edch \u0111i\u1ec3m n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u00ean trong ph\u00f2ng th\u00ed nghi\u1ec7m. Ngo\u00e0i ra, ch\u00fang c\u00f3 th\u1ec3 l\u00e0 th\u00ed nghi\u1ec7m t\u01b0\u1edfng t\u01b0\u1ee3ng \u1edf tr\u00ean l\u00fd thuy\u1ebft. Ch\u00fang \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111i\u1ec7n t\u00edch th\u1eed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1eadt \u1edf xung quanh ch\u00fang ta th\u00f4ng th\u01b0\u1eddng \u0111\u1ec1u trung h\u00f2a v\u1ec1 \u0111i\u1ec7n. L\u00fd do l\u00e0 b\u1edfi m\u1ed7i nguy\u00ean t\u1eed khi \u1edf tr\u1ea1ng th\u00e1i t\u1ef1 nhi\u00ean, ch\u00fang c\u00f3 t\u1ed5ng s\u1ed1 electron b\u1eb1ng v\u1edbi t\u1ed5ng s\u1ed1 proton.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh ch\u1ea5t c\u1ee7a c\u00e1c lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i t\u1eadp v\u00e0 gi\u1ea3i b\u00e0i t\u1eadp hai lo\u1ea1i \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i t\u1eadp<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i 1: Tr\u01b0\u1edbc khi c\u1ecd x\u00e1t c\u00e1c v\u1eadt, c\u00f3 ph\u1ea3i v\u1eadt n\u00e0o c\u0169ng \u0111\u1ec1u c\u00f3 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch: \u0111i\u1ec7n t\u00edch \u00e2m v\u00e0 \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng kh\u00f4ng? N\u1ebfu c\u00f3, ch\u00fang t\u1ed3n t\u1ea1i \u1edf nh\u1eefng lo\u1ea1i h\u1ea1t n\u00e0o \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o n\u00ean v\u1eadt?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i 2: Trong ph\u00e2n x\u01b0\u1edfng d\u1ec7t, ng\u01b0\u1eddi ta hay treo c\u00e1c t\u1ea5m kim lo\u1ea1i nhi\u1ec5m \u0111i\u1ec7n tr\u00ean tr\u1ea7n cao. Vi\u1ec7c l\u00e0m n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A L\u00e0m cho c\u00f4ng nh\u00e2n trong qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c kh\u00f4ng b\u1ecb nhi\u1ec5m \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B L\u00e0m cho c\u0103n ph\u00f2ng tr\u1edf n\u00ean s\u00e1ng s\u1ee7a h\u01a1n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C C\u00f3 t\u00e1c d\u1ee5ng h\u00fat h\u1ebft c\u00e1c b\u1ee5i b\u00f4ng l\u00ean tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a t\u1ea5m kim lo\u1ea1i. T\u1eeb \u0111\u00f3 l\u00e0m cho kh\u00f4ng kh\u00ed \u1edf trong x\u01b0\u1edfng b\u1edbt b\u1ee5i b\u1eb7m h\u01a1n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D Gi\u00fap cho nhi\u1ec7t \u0111\u1ed9 b\u00ean trong ph\u00f2ng lu\u00f4n \u0111\u01b0\u1ee3c \u1ed5n \u0111\u1ecbnh<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i 3: Trong nh\u1eefng k\u1ebft lu\u1eadn sau \u0111\u00e2y, ch\u1ecdn k\u1ebft lu\u1eadn kh\u00f4ng \u0111\u00fang<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A C\u00e1c \u0111i\u1ec7n t\u00edch c\u00f9ng lo\u1ea1i th\u00ec ch\u00fang h\u00fat nhau, c\u00f2n kh\u00e1c lo\u1ea1i th\u00ec ch\u00fang \u0111\u1ea9y nhau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B C\u00f3 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch, \u0111\u00f3 l\u00e0 \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng (+) v\u00e0 \u0111i\u1ec7n t\u00edch \u00e2m (-)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C Thanh nh\u1ef1a v\u00e0 thanh th\u1ee7y tinh, n\u1ebfu c\u1ecd x\u00e1t b\u1eb1ng v\u1ea3i kh\u00f4, \u0111\u1eb7t g\u1ea7n nhau th\u00ec ch\u00fang h\u00fat nhau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D Hai m\u1ea3nh nilon n\u1ebfu \u0111\u01b0\u1ee3c c\u1ecd x\u00e1t b\u1eb1ng v\u1ea3i kh\u00f4, sau khi \u0111\u1eb7t g\u1ea7n nhau th\u00ec s\u1ebd \u0111\u1ea9y nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1eddi gi\u1ea3i \u0111\u00e1p<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 gi\u1ea3i b\u00e0i t\u1eadp v\u1eadt l\u00fd 7 b\u00e0i 18, c\u00e1c b\u1ea1n c\u00f9ng tham kh\u1ea3o ngay nh\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i 1: Tr\u01b0\u1edbc khi c\u1ecd x\u00e1t m\u1ed7i v\u1eadt \u0111\u1ec1u \u0111\u00e3 c\u00f3 s\u1eb5n hai lo\u1ea1i \u0111i\u1ec7n t\u00edch: \u0111i\u1ec7n t\u00edch \u00e2m v\u00e0 \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng. C\u00e1c \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng s\u1ebd \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i \u1edf d\u01b0\u1edbi d\u1ea1ng h\u1ea1t nh\u00e2n nguy\u00ean t\u1eed. C\u00f2n c\u00e1c \u0111i\u1ec7n t\u00edch \u00e2m s\u1ebd \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i \u1edf c\u00e1c electron, chuy\u1ec3n \u0111\u1ed9ng \u1edf xung quanh h\u1ea1t nh\u00e2n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i 2: \u0110\u00e1p \u00e1n C. Nh\u1eefng t\u1ea5m kim lo\u1ea1i nhi\u1ec5m \u0111i\u1ec7n \u1edf tr\u00ean cao c\u00f3 \u0111\u1eb7c t\u00ednh r\u1ea5t th\u00fa v\u1ecb. Ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng h\u00fat \u0111\u01b0\u1ee3c h\u1ebft nh\u1eefng b\u1ee5i b\u00f4ng \u0111\u1ec3 b\u00e1m tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a ch\u00fang. T\u1eeb \u0111\u00f3 l\u00e0m cho kh\u00f4ng kh\u00ed trong x\u01b0\u01a1ng tr\u1edf n\u00ean s\u1ea1ch, \u00edt g\u1eb7p b\u1ee5i b\u1ea9n h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i 3: \u0110\u00e1p \u00e1n A. C\u00e1c v\u1eadt mang \u0111i\u1ec7n t\u00edch kh\u00e1c lo\u1ea1i th\u00ec s\u1ebd h\u00fat nhau. C\u00f2n c\u00e1c v\u1eadt m\u00e0 mang \u0111i\u1ec7n t\u00edch c\u00f9ng lo\u1ea1i th\u00ec s\u1ebd \u0111\u1ea9y nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng tin v\u1ec1 c\u00e1c \u0111i\u1ec7n t\u00edch<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin m\u00e0 ch\u00fang t\u00f4i cung c\u1ea5p cho b\u1ea1n \u0111\u1ecdc v\u1ec1 hai lo\u1ea1i \u0111i\u1ec7n t\u00edch. \u0110\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin v\u00f4 c\u00f9ng th\u00fa v\u1ecb, b\u1ea1n \u0111\u1ecdc \u0111\u1eebng n\u00ean b\u1ecf qua nh\u00e9. H\u00e3y gi\u00fap ch\u00fang t\u00f4i chia s\u1ebb b\u00e0i vi\u1ebft r\u1ed9ng r\u00e3i \u0111\u1ec3 nhi\u1ec1u ng\u01b0\u1eddi y\u00eau v\u1eadt l\u00fd c\u00f3 th\u1ec3 h\u1ecdc h\u1ecfi ngay l\u00fac n\u00e0y. Ngo\u00e0i ra, ch\u00fang t\u00f4i gi\u1edbi thi\u1ec7u cho b\u1ea1n nh\u1eefng b\u00e0i vi\u1ebft ch\u1ea5t l\u01b0\u1ee3ng kh\u00e1c tr\u00ean website \u0111\u1ec3 b\u1ea1n tham kh\u1ea3o. \u0110\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin c\u1ef1c k\u1ef3 th\u00fa v\u1ecb v\u00e0 tin c\u1eady, \u0111\u1ee7 \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 h\u1ecdc h\u1ecfi theo. V\u00ed d\u1ee5 nh\u01b0 b\u00e0i vi\u1ebft v\u1ec1 s\u1ef1 nhi\u1ec5m \u0111i\u1ec7n<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn \u0110\u1ed1i v\u1edbi v\u1eadt l\u00fd h\u1ecdc, b\u1ea5t c\u1ee9 kh\u00e1i ni\u1ec7m g\u00ec \u0111\u01b0a ra \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111i k\u00e8m v\u1edbi th\u00ed nghi\u1ec7m. \u0110\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd trong ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc l\u1edbp 7, ch\u00fang r\u1ed9ng l\u1edbn nh\u01b0ng c\u0169ng r\u1ea5t g\u1ea7n g\u0169i. B\u00e0i h\u1ecdc h\u00f4m nay m\u00e0 ch\u00fang t\u00f4i mu\u1ed1n [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[4,7],"tags":[],"class_list":["post-1173","post","type-post","status-publish","format-standard","hentry","category-trung-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=1173"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1173\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}