{"id":762,"date":"2010-04-17T22:38:58","date_gmt":"2010-04-17T09:38:58","guid":{"rendered":"http:\/\/science4all.blogtown.co.nz\/?p=762"},"modified":"2010-04-17T23:05:27","modified_gmt":"2010-04-17T10:05:27","slug":"chemical-changes","status":"publish","type":"post","link":"https:\/\/science4all.blogtown.co.nz\/?p=762","title":{"rendered":"Chemical changes"},"content":{"rendered":"<h3><strong><span style=\"color: #ff6600\"><span style=\"text-decoration: underline\">Chemical changes<\/span><\/span><\/strong> involve changes in the connections between substances. A chemical reaction can form a new substance. However, a chemical change involves the formation of a new substance, requires energy and cannot be reversed.<\/h3>\n<h3><\/h3>\n<p style=\"text-align: center\"><span style=\"font-weight: normal\"><span style=\"color: #333399\">Chemical Change = Irreversible change = cannot be changed back<\/span><\/span><\/p>\n<h3 style=\"text-align: center\"><\/h3>\n<h3><span style=\"font-weight: normal;font-size: 13px\">Cooking can cause an irreversible change. For example: an egg can be heated and cannot be returned to its previous state.<\/span><\/h3>\n<ul>\n<li>Burning materials, such as wood, paper, natural gas, causes an irreversible change.<\/li>\n<li>Irreversible changes can form new materials that can be useful e.g. plaster of Paris and water.<\/li>\n<li>Dead plants and animals decay and some metals rust. These chemical changes are permanent.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Chemical changes involve changes in the connections between substances. A chemical reaction can form a new substance. However, a chemical change involves the formation of a new substance, requires energy and cannot be reversed. Chemical Change = Irreversible change = cannot be changed back Cooking can cause an irreversible change. For example: an egg can &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/science4all.blogtown.co.nz\/?p=762\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Chemical changes&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1509,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"Chemical changes - science4all","description":"Chemical changes involve changes in the connections between substances. A chemical reaction can form a new substance. However, a chemical change involves the fo"},"footnotes":""},"categories":[6328,6307],"tags":[],"class_list":["post-762","post","type-post","status-publish","format-standard","hentry","category-year-6-8-science","category-year9-science"],"_links":{"self":[{"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/users\/1509"}],"replies":[{"embeddable":true,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=762"}],"version-history":[{"count":2,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/762\/revisions"}],"predecessor-version":[{"id":785,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/762\/revisions\/785"}],"wp:attachment":[{"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}