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Grade 7 Chemistry All Class Assessment and Revision of Examination

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  Grade 7 Chemistry All Class Assessment and Revision of Examination  1.       ---------------------- is a natural rock a)      Element b)      Ore c)       Atom 2.       The metal in ores are chemically bonded to other ------------------ d)      Element e)      Ore f)        Atom 3.       The least reactive ones are at the ----------------- g)      tope h)      middle i)         bottom 4.       Ores are rocks from which it is economical to extract metals that they contain. A)      True B)      False 5.       The least reactive ones are at the top A)      True B)    ...