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  1. Simple put the iron nail into a cup of copper (II) sulfate solution. You may observe that the color of the solution will change from blue to green gradually. The iron from the nail displaces copper (II). ...

    分類:科學及數學 > 化學 2011年07月20日

  2. ...of the solutions. Iron(II) sulphate: A pale green precipitate (iron(II) hydroxide) is formed. Iron(III...

    分類:科學及數學 > 化學 2011年03月06日

  3. ... with white papers, you have a mixture of green and white papers. You can tell them apart...separate them apart. For example: You put sugar into your coffee. The sugar now becomes...

    分類:科學及數學 > 化學 2009年03月24日

  4. ...pale yellow in colour, while chlorine, bromine and iodine are in yellowish- green , brown and dark black in colour respectively. Therefore, their...

    分類:科學及數學 > 化學 2007年04月09日

  5. ...color becomes lighter when lemon juice is put into a tea. Red cabbage juice turns blue in an... change their colours (usually from green to yellow) when they ripe. This is because the...

    分類:科學及數學 > 化學 2008年06月18日

  6. ...to place test tubes and boiling tubes Heat-proof mat -- Put under a Bunsen burner when used Tripod -- placed over...

    分類:科學及數學 > 化學 2009年02月12日

  7. ... are manufactured . Simply put , pollution prevention is waste prevention. Pollution...away. The last three steps listed on the green chart show the best ways for garbage to be ...

    分類:科學及數學 > 化學 2008年02月13日