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Inks, Food Colors and Papers Booklet

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Stock #: 652488

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    Models in Technology and Science by Bernie Zubrowski.

    Water based pens are tested with water and then other kinds of liquids by placing these liquids on marks made on paper. Chromatography is used to refine these observations. A similar process is carried out with permanent pens. These experiences are used to introduce the concept of solubility and physical change. Bleaching of the inks and the changing of the inks of special pens is used as a context for introducing chemical change.

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