{"id":424,"date":"2015-03-05T03:44:14","date_gmt":"2015-03-05T03:44:14","guid":{"rendered":"http:\/\/paksc.org\/pk\/?p=424"},"modified":"2018-01-14T15:03:12","modified_gmt":"2018-01-14T15:03:12","slug":"234-semi-permeable-membrane-and-osmotic-pressur-biology-experiment","status":"publish","type":"post","link":"https:\/\/paksc.org\/pk\/science-experiments\/biology-experiments\/234-semi-permeable-membrane-and-osmotic-pressur-biology-experiment\/","title":{"rendered":"Experiment about Semi-permeable Membrane and Osmotic Pressure"},"content":{"rendered":"
\n

Semi-permeable membrane and osmotic pressure<\/h3>\n

Level Elementary<\/h4>\n

Concept<\/h3>\n

Cells that make the body of the living thing are covered with semi-permeable membrane. There are so many tiny holes in \"\"semi-permeable membrane. A big molecule like sugar is not passed though semi-permeable membrane, but a small molecule like water can be passed. Only water moves to the salt solution when water and the salt solution are partitioned with semi-permeable membrane. This phenomenon is called osmosis. Moreover, the pressure takes at this time is called an osmotic pressure. The phenomenon of osmosis is confirmed by using familiar foods.<\/p>\n

Experiment 1<\/h3>\n

Materials<\/h4>\n

sugar, salt, cabbage, and kitchen bowl (2)<\/p>\n

Procedure<\/h3>\n

The cabbage is shredded. Put it in two kitchen bowls dividing into the half. Rub it by the hand without putting anything. It is confirmed whether there is a change or not. The salt is put to the cabbage and the sugar is put in another cabbage. They are often rubbed by the hand. Either confirms whether a lot of water has come out. A lot of water comes out when the osmotic pressure is high. The osmotic pressure of the salt is higher than that of sugar.<\/p>\n

\"\"<\/h4>\n

Science<\/h3>\n

The osmotic pressure rises when a lot of solutes are dissolved. The osmotic pressure becomes about 7times of atmospheric pressure by the salt solution of 1%.<\/p>\n

\"\"<\/p>\n

\u00a0 Semi-permeable membrane and osmotic pressure \" Biology Experiment 2<\/h3>\n
\n

\"\"\"\"<\/p>\n

\"\"<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Semi-permeable membrane and osmotic pressure Level Elementary Concept Cells that make the body of the living thing are covered with semi-permeable membrane. There are so many tiny holes in semi-permeable membrane. A big molecule like sugar is not passed though semi-permeable membrane, but a small molecule like water can be passed. Only water moves to…<\/p>\n","protected":false},"author":9,"featured_media":427,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[28],"tags":[6,11],"class_list":["post-424","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biology-experiments","tag-class-7th-to-8th","tag-life-science"],"yoast_head":"\nExperiment about Semi-permeable Membrane and Osmotic Pressure -<\/title>\n<meta name=\"description\" content=\"Experiment about Semi-permeable Membrane and Osmotic Pressure Experiment about Semi-permeable Membrane and Osmotic Pressure\" \/>\n<meta name=\"robots\" content=\"index, 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