{"id":15848,"date":"2021-11-27T19:06:19","date_gmt":"2021-11-27T12:06:19","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=15848"},"modified":"2021-11-27T19:06:20","modified_gmt":"2021-11-27T12:06:20","slug":"cat-do-dau-ma-co","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/cat-do-dau-ma-co\/","title":{"rendered":"C\u00e1t do \u0111\u00e2u m\u00e0 c\u00f3?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 &#8211; Arkady Leokum<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u0111\u00e1 c\u1ee9ng ph\u01a1i m\u00ecnh ngo\u00e0i gi\u00f3, m\u01b0a, b\u0103ng gi\u00e1, th\u00ec n\u00f3 s\u1ebd b\u1ecb b\u00e0o m\u00f2n hay l\u00e0m v\u1ee1 ra th\u00e0nh nh\u1eefng m\u1eabu nh\u1ecf h\u01a1n. N\u1ebfu m\u1eabu \u0111\u00e1 v\u1ee1 \u1ea5y nh\u1ecf \u0111\u1ebfn m\u1ee9c \u0111\u01b0\u1eddng k\u00ednh ch\u1ec9 t\u1eeb 0,05 mm \u0111\u1ebfn 2,5 mm th\u00ec n\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec c\u00e1t \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh b\u1edfi nh\u1eefng h\u1ea1t kho\u00e1ng ch\u1ea5t nh\u1ecf \u1edf trong \u0111\u00e1, n\u00ean b\u1ea5t c\u1ee9 m\u1ed9t kho\u00e1ng ch\u1ea5t n\u00e0o c\u0169ng c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y trong c\u00e1t. Kho\u00e1ng ch\u1ea5t ch\u00ednh t\u00ecm \u0111\u01b0\u1ee3c trong c\u00e1t l\u00e0 th\u1ea1ch anh v\u00ec th\u1ea1ch anh r\u1ea5t c\u1ee9ng v\u00e0 h\u00e0m l\u01b0\u1ee3ng nhi\u1ec1u. M\u1ed9t v\u00e0i lo\u1ea1i c\u00e1t c\u00f3 99% th\u1ea1ch anh nguy\u00ean ch\u1ea5t. Nh\u1eefng kho\u00e1ng ch\u1ea5t kh\u00e1c t\u00ecm th\u1ea5y trong c\u00e1t l\u00e0 tr\u01b0\u1eddng th\u1ea1ch, canxit, mica, qu\u1eb7ng s\u1eaft, v\u00e0 m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng nh\u1ecf silicat h\u1ed3ng, m\u00e3 n\u00e3o v\u00e0 ho\u00e0ng ng\u1ecdc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea5t c\u1ee9 \u1edf \u0111\u00e2u \u0111\u00e1 b\u1ecb ph\u01a1i ngo\u00e0i m\u01b0a n\u1eafng l\u00e0 c\u00f3 c\u00e1t. M\u1ed9t trong nh\u1eefng v\u00f9ng t\u1ea1o ra c\u00e1t l\u00e0 b\u1edd bi\u1ec3n. \u1ede \u0111\u1ea5y, \u0111\u00e1 b\u1ecb \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp c\u1ee7a th\u1ee7y tri\u1ec1u, s\u00f3ng tr\u00ean \u0111\u00e1, gi\u00f3 th\u1ed5i c\u00e1t c\u1ecd x\u00e1t v\u00e0o m\u1eb7t \u0111\u00e1 v\u00e0 n\u01b0\u1edbc bi\u1ec3n l\u00e0m h\u00f2a tan m\u1ed9t v\u00e0i kho\u00e1ng ch\u1ea5t trong \u0111\u00e1; t\u1ea5t c\u1ea3 nh\u1eefng y\u1ebfu t\u1ed1 tr\u00ean ph\u1ed1i h\u1ee3p l\u1ea1i \u0111\u1ec3 t\u1ea1o n\u00ean c\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1t l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u r\u1ea5t h\u1eefu \u00edch. Ng\u01b0\u1eddi ta d\u00f9ng c\u00e1t \u0111\u00fac b\u00ea t\u00f4ng, l\u00e0m k\u00ednh, th\u1ee7y tinh, l\u00e0m gi\u1ea5y nh\u00e1m v\u00e0 c\u0169ng d\u00f9ng c\u00e1t \u0111\u1ec3 l\u1ecdc n\u01b0\u1edbc cho trong.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 &#8211; Arkady Leokum Khi \u0111\u00e1 c\u1ee9ng ph\u01a1i m\u00ecnh ngo\u00e0i gi\u00f3, m\u01b0a, b\u0103ng gi\u00e1, th\u00ec n\u00f3 s\u1ebd b\u1ecb b\u00e0o m\u00f2n hay l\u00e0m v\u1ee1 ra th\u00e0nh nh\u1eefng m\u1eabu nh\u1ecf h\u01a1n. N\u1ebfu m\u1eabu \u0111\u00e1 v\u1ee1 \u1ea5y nh\u1ecf \u0111\u1ebfn m\u1ee9c \u0111\u01b0\u1eddng k\u00ednh ch\u1ec9 t\u1eeb 0,05 mm [&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":[15],"tags":[],"class_list":["post-15848","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15848","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=15848"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15848\/revisions"}],"predecessor-version":[{"id":15849,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15848\/revisions\/15849"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=15848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=15848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=15848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}