{"id":38,"date":"2014-10-15T17:52:44","date_gmt":"2014-10-15T17:52:44","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/chemical-reactions-revision\/"},"modified":"2014-10-23T09:19:09","modified_gmt":"2014-10-23T09:19:09","slug":"chemical-reactions-revision","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/chemical-reactions-revision\/","title":{"rendered":"Chemical Reactions Revision"},"content":{"rendered":"

\"\"<\/a>\u00a0Chemical Reactions Summary<\/span><\/span><\/h1>\n

\u00a0<\/p>\n

    \n
  1. In a chemical reaction, new substance(s) are always formed.<\/li>\n<\/ol>\n

    \u00a0<\/p>\n

    2.A chemical reaction can be detected when one or more of the following occur;<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 COLOUR CHANGE<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SOLID FORMED [PRECIPITATE]\"\"<\/a><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 GAS GIVEN OFF<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 HEAT GIVEN OUT<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 HEAT TAKEN IN<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 LIGHT GIVEN OUT<\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SOUND GIVEN OUT<\/p>\n

      \n
    1. An ELEMENT <\/span><\/strong>is a substance which cannot be broken down into anything simpler. An element is made of the same type of ATOM.<\/li>\n<\/ol>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Elements are listed in the PERIODIC TABLE.<\/p>\n

      \u00a0\u00a0\u00a0\u00a0 There are approximately 100 elements.<\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Eg. Chlorine [symbol is Cl]<\/p>\n

        \n
      1. A COMPOUND<\/span><\/strong> is formed when 2 or more elements chemically join.<\/li>\n<\/ol>\n

        \u00a0<\/p>\n

          \n
        1. A MIXTURE<\/span><\/strong> is formed when 2 or more substances are simply mixed together.<\/li>\n<\/ol>\n

          \u00a0<\/p>\n

            \n
          1. Electricity is needed to break up a compound. This process is called ELECTROLYSIS.<\/li>\n<\/ol>\n

            \u00a0<\/p>\n

              \n
            1. GAS TESTS<\/span><\/strong><\/li>\n<\/ol>\n

              \u00a0<\/p>\n

              \u00a0\u00a0\"\"<\/a> HYDROGEN; burns with a pop.<\/p>\n

              \u00a0\u00a0 OXYGEN; relights a glowing taper.<\/p>\n

              \u00a0\u00a0 CARBON DIOXIDE; turns limewater milky.<\/p>\n

                \n
              1. SPEED OF REACTIONS<\/span><\/strong><\/li>\n<\/ol>\n

                \u00a0\u00a0 PARTICLE SIZE; the smaller the particle size the faster the \u00a0\u00a0\u00a0reaction.<\/p>\n

                \u00a0\u00a0 CONCENTRATION; the higher the concentration the faster the reaction.<\/p>\n

                  \n
                1. CHEMICAL CHANGES;<\/span><\/strong> new substance(s) are formed.<\/li>\n<\/ol>\n

                  \u00a0<\/p>\n

                  \u00a0\u00a0 \u00a0\u00a0PHYSICAL CHANGES;<\/span><\/strong> new substance(s) are NOT formed!<\/p>\n

                  \u00a0\u00a0\u00a0\u00a0 Eg. Water turning to ice or water turning to steam are CHANGES OF STATE!<\/p>\n

                    \n
                  1. WORD EQUATIONS<\/span><\/strong><\/li>\n<\/ol>\n

                    \u00a0\u00a0\u00a0 These are used to represent a chemical reaction.<\/p>\n

                    \u00a0\u00a0\u00a0\u00a0 Eg. When magnesium metal reacts with oxygen a white powder called magnesium oxide forms.<\/p>\n

                    \u00a0\u00a0 Magnesium\u00a0 + Oxygen\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Magnesium oxide<\/p>\n

                    Magnesium and oxygen are the REACTANTS and magnesium oxide is the PRODUCT.<\/p>\n","protected":false},"excerpt":{"rendered":"

                    \u00a0Chemical Reactions Summary \u00a0 In a chemical reaction, new substance(s) are always formed. \u00a0 2.A chemical reaction can be detected when one or more of the following occur; \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 COLOUR CHANGE \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SOLID FORMED [PRECIPITATE] \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 GAS GIVEN OFF \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 HEAT GIVEN OUT \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 HEAT TAKEN IN \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 LIGHT GIVEN OUT \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SOUND GIVEN OUT … Continue reading “Chemical Reactions Revision”<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-38","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/pages\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/comments?post=38"}],"version-history":[{"count":4,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/pages\/38\/revisions"}],"predecessor-version":[{"id":87,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/pages\/38\/revisions\/87"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1revision\/wp-json\/wp\/v2\/media?parent=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}