{"id":767,"date":"2010-04-17T22:45:09","date_gmt":"2010-04-17T09:45:09","guid":{"rendered":"http:\/\/science4all.blogtown.co.nz\/?p=767"},"modified":"2010-04-17T22:45:09","modified_gmt":"2010-04-17T09:45:09","slug":"elements-compounds-and-mixtures","status":"publish","type":"post","link":"https:\/\/science4all.blogtown.co.nz\/?p=767","title":{"rendered":"Elements, compounds and mixtures"},"content":{"rendered":"<h3 style=\"text-align: center\"><strong><span style=\"color: #339966\">Elements, compounds and mixtures<\/span><\/strong><\/h3>\n<p>Chemical substances <strong>consist<\/strong> of either elements in their pure form or <strong>combinations<\/strong> of elements. An element cannot be physically broken down into <strong>simpler<\/strong> substances. Different elements have different properties. Elements <strong>comprise<\/strong> metals and non-metals. Iron is an <strong>example<\/strong> of metal. Non-metals <strong>include<\/strong> hydrogen and oxygen. Elements <strong>combine<\/strong> to form compounds or mixtures. Compounds are <strong>combinations<\/strong> of elements joined chemically, in fixed proportion. Compounds can not be physically separated into their elements. A mixture can be separated into their elements. Mixtures are separated by processes such as filtration, sieving and evaporation. All of these involve a physical change. We can determine whether a substance is pure or not by trying to separate it physically.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Elements, compounds and mixtures Chemical substances consist of either elements in their pure form or combinations of elements. An element cannot be physically broken down into simpler substances. Different elements have different properties. Elements comprise metals and non-metals. Iron is an example of metal. Non-metals include hydrogen and oxygen. Elements combine to form compounds or &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/science4all.blogtown.co.nz\/?p=767\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Elements, compounds and mixtures&#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":"Elements, compounds and mixtures - science4all","description":"Elements, compounds and mixtures Chemical substances consist of either elements in their pure form or combinations of elements. An element cannot be physically"},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-767","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/767","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=767"}],"version-history":[{"count":1,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/767\/revisions"}],"predecessor-version":[{"id":768,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=\/wp\/v2\/posts\/767\/revisions\/768"}],"wp:attachment":[{"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science4all.blogtown.co.nz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}