cross and dot diagrams (chemistry)
My teacher has said that there will be "dot and cross diagrams" on the mock exam tomorrow. I have been told that they are a GSCE topic but I never covered them. HELP!!!! (a link to a concise explanation would be nice).
http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/atomic/ionicrev5.shtml
There should be loads online or perhaps in your GCSE textbooks and there are also videos online as well
There should be loads online or perhaps in your GCSE textbooks and there are also videos online as well
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