{"id":23406,"date":"2025-03-01T11:49:30","date_gmt":"2025-03-01T04:49:30","guid":{"rendered":"https:\/\/i-clc.edu.vn\/?p=23406"},"modified":"2025-03-01T11:50:41","modified_gmt":"2025-03-01T04:50:41","slug":"23406","status":"publish","type":"post","link":"https:\/\/i-clc.edu.vn\/en\/kien-thuc-toan-khoa-hoc-song-ngu\/23406\/","title":{"rendered":"Khoa h\u1ecdc song ng\u1eef: D\u1ea7u n\u1ed5i n\u01b0\u1edbc ch\u00ecm, v\u00ec sao nh\u1ec9?"},"content":{"rendered":"<p><span style=\"font-weight: 400\">Th\u00eam \u0111\u01b0\u1eddng, th\u00eam mu\u1ed1i v\u00e0o n\u01b0\u1edbc v\u00e0 khu\u1ea5y l\u00ean th\u00ec ch\u00fang h\u00f2a tan v\u00e0o nhau. Th\u1ebf t\u1ea1i sao th\u00eam d\u1ea7u \u0103n v\u00e0o th\u00ec n\u00f3 l\u1ea1i kh\u00f4ng th\u1ec3 h\u00f2a tan nh\u1ec9? Th\u1eadm ch\u00ed d\u1ea7u c\u00f2n n\u1ed5i ph\u00eda tr\u00ean m\u1eb7t n\u01b0\u1edbc ch\u1ee9 kh\u00f4ng n\u1eb1m \u1edf d\u01b0\u1edbi \u0111\u00e1y. B\u00e2y gi\u1edd, I-CLC s\u1ebd c\u00f9ng B\u00e9 gi\u1ea3i m\u00e3 c\u00e2u h\u1ecfi n\u00e0y nha.<\/span><\/p>\n<p><i><span style=\"font-weight: 400\">When you add sugar, salt into the water and stir them, make them dissolve. But why doesn\u2019t cooking oil dissolve in water? In fact, oil even floats on top instead of sinking to the bottom. Now, I-CLC will help you explore and solve this question together!<\/span><\/i><\/p>\n<p><b>D\u1ea7u ch\u00ecm n\u01b0\u1edbc n\u1ed5i<\/b><\/p>\n<p><b><i>Oil floats water sinks<\/i><\/b><\/p>\n<p><span style=\"font-weight: 400\">Nguy\u00ean nh\u00e2n hi\u1ec7n t\u01b0\u1ee3ng khi b\u1ecf d\u1ea7u v\u00e0 n\u01b0\u1edbc v\u00e0o chung m\u1ed9t ly th\u00ec ch\u00fang t\u00e1ch th\u00e0nh 2 l\u1edbp kh\u00e1c nhau c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch nh\u01b0 sau.<\/span><\/p>\n<p><i><span style=\"font-weight: 400\">The reason why oil and water separate into two distinct layers when we mix them in a glass can be explained as follows.<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400\">M\u1ed7i m\u1ed9t ch\u1ea5t l\u1ecfng c\u00f3 \u201c\u0111\u1ed9 n\u1eb7ng\u201d kh\u00e1c nhau, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang. N\u01b0\u1edbc c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 1 g\/cm<\/span><span style=\"font-weight: 400\">3<\/span><span style=\"font-weight: 400\">, d\u1ea7u \u0103n th\u00ec c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 0.8 g\/cm<\/span><span style=\"font-weight: 400\">3<\/span><span style=\"font-weight: 400\">. V\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u1edbn h\u01a1n d\u1ea7u, ch\u00ednh v\u00ec th\u1ebf d\u1ea7u s\u1ebd n\u1ed5i l\u00ean v\u00e0 n\u01b0\u1edbc s\u1ebd ch\u00ecm xu\u1ed1ng.<\/span><\/p>\n<p><i><span style=\"font-weight: 400\">Each liquid has different \u201cheaviness\u201d, which is called density. Water has a density of 1 g\/cm\u00b3, while cooking oil has a density of 0,8 g\/cm\u00b3. Since water has a higher density than oil, oil floats on top and the water sinks to the bottom.<\/span><\/i><\/p>\n<p><a href=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/2.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-23408 aligncenter\" src=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/2.jpg\" alt=\"\" width=\"540\" height=\"435\" srcset=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/2.jpg 540w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/2-300x242.jpg 300w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/2-15x12.jpg 15w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/><\/a><\/p>\n<p><b>D\u1ea7u v\u00e0 n\u01b0\u1edbc kh\u00f4ng th\u1ec3 h\u00f2a tan v\u00e0o nhau<\/b><\/p>\n<p><b><i>Oil and water can\u2019t dissolve into each other<\/i><\/b><\/p>\n<p><span style=\"font-weight: 400\">D\u1ea7u v\u00e0 n\u01b0\u1edbc c\u00f3 t\u00ednh ch\u1ea5t khoa h\u1ecdc kh\u00e1c nhau<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">N\u01b0\u1edbc l\u00e0 ch\u1ea5t ph\u00e2n c\u1ef1c, c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc c\u00f3 hai \u0111\u1ea7u mang \u0111i\u1ec7n t\u00edch: m\u1ed9t \u0111\u1ea7u \u0111i\u1ec7n t\u00edch \u00e2m v\u00e0 m\u1ed9t \u0111\u1ea7u \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">D\u1ea7u l\u00e0 ch\u1ea5t kh\u00f4ng ph\u00e2n c\u1ef1c, c\u00e1c ph\u00e2n t\u1eed d\u1ea7u kh\u00f4ng c\u00f3 \u0111i\u1ec7n t\u00edch \u1edf hai \u0111\u1ea7u<\/span><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">Oil and water have different scientific properties<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Water is a polar substance, its molecules have two charged ends: one with a negative charge and the other is positive charge.<\/span><\/i><\/li>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Oil is a non-polar substance, its molecules do not have charges at either end.<\/span><\/i><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">=&gt; Khi th\u1ef1c hi\u1ec7n \u0111\u1ed9ng t\u00e1c khu\u1ea5y th\u00ec sau khi d\u1eebng l\u1ea1i th\u00ec d\u1ea7u v\u00e0 n\u01b0\u1edbc v\u1eabn s\u1ebd t\u00e1ch th\u00e0nh hai l\u1edbp. V\u00ec c\u00e1c ch\u1ea5t ph\u00e2n c\u1ef1c ch\u1ec9 h\u00f2a tan v\u1edbi ch\u1ea5t ph\u00e2n c\u1ef1c, t\u01b0\u01a1ng t\u1ef1, c\u00e1c ch\u1ea5t kh\u00f4ng ph\u00e2n c\u1ef1c c\u0169ng ch\u1ec9 h\u00f2a tan v\u1edbi ch\u1ea5t kh\u00f4ng ph\u00e2n c\u1ef1c.<\/span><\/p>\n<p><i><span style=\"font-weight: 400\">When stirring, even after we stop it, oil and water continue to separate into layers. This happens because polar substances only dissolve in polar substances, and similar, non-polar substances only dissolve in non-polar substances.<\/span><\/i><\/p>\n<p><a href=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/3.jpg\"><img decoding=\"async\" class=\"size-full wp-image-23409 aligncenter\" src=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/3.jpg\" alt=\"\" width=\"800\" height=\"500\" srcset=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/3.jpg 800w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/3-300x188.jpg 300w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/3-768x480.jpg 768w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2025\/03\/3-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p><b>Tr\u1ed9n d\u1ea7u v\u00e0 n\u01b0\u1edbc, c\u00f3 \u0111\u01b0\u1ee3c kh\u00f4ng?<\/b><\/p>\n<p><b><i>Mixed oil and water, is it possible?<\/i><\/b><\/p>\n<p><span style=\"font-weight: 400\">Vi\u1ec7c tr\u1ed9n d\u1ea7u v\u00e0 n\u01b0\u1edbc v\u1edbi nhau, \u0111\u1eb7c bi\u1ec7t c\u00f3 th\u1ec3 h\u00f2a tan v\u00e0o nhau th\u00ec ho\u00e0n to\u00e0n c\u00f3 th\u1ec3. Tuy nhi\u00ean c\u1ea7n s\u1eed d\u1ee5ng th\u00eam ch\u1ea5t nh\u0169 h\u00f3a, c\u1ee5 th\u1ec3 l\u00e0 x\u00e0 ph\u00f2ng. V\u00ec hai \u0111\u1ea7u ph\u00e2n t\u1eed c\u1ee7a x\u00e0 ph\u00f2ng c\u00f3 m\u1ed9t \u0111\u1ea7u ph\u00e2n c\u1ef1c v\u00e0 m\u1ed9t \u0111\u1ea7u kh\u00f4ng ph\u00e2n c\u1ef1c gi\u00fap d\u1ea7u v\u00e0 n\u01b0\u1edbc h\u00f2a tr\u1ed9n v\u1edbi nhau. \u0110\u00e2y l\u00e0 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u01b0\u1edbc r\u1eeda ch\u00e9n, gi\u00fap d\u1ea7u m\u1ee1 c\u00f3 th\u1ec3 h\u00f2a tan v\u1edbi n\u01b0\u1edbc \u0111\u1ec3 d\u1ec5 d\u00e0ng r\u1eeda s\u1ea1ch.<\/span><\/p>\n<p><i><span style=\"font-weight: 400\">Mixing oil and water together, and even making them dissolve into each other is quite impossible. However, it requires the use of an emulsifier, specifically soap. This is because soap molecules have one polar end and one non-polar end, allowing oil and water to blend together. This is how dishwashing liquid works &#8211; it helps grease, oil dissolve in water, making it easier to wash away.<\/span><\/i><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400\">V\u1eady l\u00e0 B\u00e9 \u0111\u00e3 t\u00ecm \u0111\u01b0\u1ee3c c\u00e2u tr\u1ea3 l\u1eddi cho vi\u1ec7c \u201cd\u1ea7u n\u1ed5i n\u01b0\u1edbc ch\u00ecm\u201d r\u1ed3i \u0111\u00fang kh\u00f4ng n\u00e0o? V\u00e0 h\u00f3a ra hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y c\u00f3 th\u1ec3 n\u00f3i gi\u00fap con ng\u01b0\u1eddi ch\u00fang ta t\u00ecm c\u00e1ch r\u1eeda s\u1ea1ch \u0111i v\u1ebft d\u1ea7u v\u1ebft m\u1ee1 tr\u00ean d\u1ee5ng c\u1ee5 \u0103n u\u1ed1ng h\u00e0ng ng\u00e0y b\u1eb1ng vi\u1ec7c t\u1ea1o ra x\u00e0 ph\u00f2ng. B\u00ean c\u1ea1nh \u0111\u00f3, n\u1ebfu mu\u1ed1n ki\u1ec3m ch\u1ee9ng vi\u1ec7c d\u1ea7u c\u00f3 th\u1eadt s\u1ef1 n\u1ed5i tr\u00ean m\u1eb7t n\u01b0\u1edbc kh\u00f4ng th\u00ec B\u00e9 c\u00f3 th\u1ec3 b\u1ecf d\u1ea7u v\u00e0o m\u1ed9t ly n\u01b0\u1edbc nh\u1ecf \u0111\u1ec3 quan s\u00e1t nh\u00e9!<\/span><\/p>\n<p><i><span style=\"font-weight: 400\">So, you found the answer for \u201coil floats water sinks\u201d, right? And it turns out that this phenomenon helps humans find how to create soap as a way to remove grease and oil stains from everyday dishware. Besides, if you want to check if oil really floats on top of the water then you add some oil into water and see it for yourself.\u00a0<\/span><\/i><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400\">LANGUAGE CENTER INTERCONTINENTAL (I-CLC)<\/span><\/p>\n<p><span style=\"font-weight: 400\">CN HCM: 46 Road 65, KDC Tan Quy Dong, P. Tan Phong, District 7<\/span><\/p>\n<p><span style=\"font-weight: 400\">CN Nha Trang: Plot no. 12, Road B2, Urban Area, Vinh Diem Trung, Vinh Hiep, ho chi minh City, Nha Trang<\/span><\/p>\n<p><span style=\"font-weight: 400\">0917729932<\/span><\/p>\n<p><span style=\"font-weight: 400\">#ICLC #tienganhtieuhoc #tienganhtreem #IELTS<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Th\u00eam \u0111\u01b0\u1eddng, th\u00eam mu\u1ed1i v\u00e0o n\u01b0\u1edbc v\u00e0 khu\u1ea5y l\u00ean th\u00ec ch\u00fang h\u00f2a tan v\u00e0o nhau. Th\u1ebf t\u1ea1i sao th\u00eam d\u1ea7u \u0103n v\u00e0o th\u00ec n\u00f3 l\u1ea1i kh\u00f4ng th\u1ec3 h\u00f2a tan nh\u1ec9? Th\u1eadm ch\u00ed d\u1ea7u c\u00f2n n\u1ed5i ph\u00eda tr\u00ean m\u1eb7t n\u01b0\u1edbc ch\u1ee9 kh\u00f4ng n\u1eb1m \u1edf d\u01b0\u1edbi \u0111\u00e1y. B\u00e2y gi\u1edd, I-CLC s\u1ebd c\u00f9ng B\u00e9 gi\u1ea3i m\u00e3 c\u00e2u h\u1ecfi &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/i-clc.edu.vn\/en\/kien-thuc-toan-khoa-hoc-song-ngu\/23406\/\"> <span class=\"screen-reader-text\">Khoa h\u1ecdc song ng\u1eef: D\u1ea7u n\u1ed5i n\u01b0\u1edbc ch\u00ecm, v\u00ec sao nh\u1ec9?<\/span> Read More &raquo;<\/a><\/p>","protected":false},"author":427,"featured_media":23407,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[188],"tags":[],"class_list":["post-23406","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc-toan-khoa-hoc-song-ngu"],"acf":[],"_links":{"self":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/23406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/comments?post=23406"}],"version-history":[{"count":2,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/23406\/revisions"}],"predecessor-version":[{"id":23411,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/23406\/revisions\/23411"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/media\/23407"}],"wp:attachment":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/media?parent=23406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/categories?post=23406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/tags?post=23406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}