How To Make A Volcano Model
<p>Creating a volcano model and making it erupt is a funny science experiment that teaches children about chemical reactions. There are several variants of this experiment. You can make a volcano of dough, foam or paper mache. The eruption of the volcano can be made with the help of soda and soda water.</p>
<p>1. Buy 2 liters of soda water.</p>
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<p>2. Make a tray of cardboard and cut out the hole in it with the size of a two-liter bottle.</p>
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<ul><li> Take a thick cardboard to make the tray.</li><li>You can also add up a few pieces of carton together for a stronger foundation.</li></ul>
<p>3. Put the bottle in the carton. Cover the bottle with aluminum foil on top.</p>
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<p>4. Buy a bottle of insulating foam against cracks. The spray which solidifies after application will be the best variant.</p>
<ul><li> You can try «Great Stuff Insulating Foam Sealant».</li></ul>
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<p>5. Apply the spray around the bottle to make a mountain. Once you build up a base, let it dry.</p>
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<p>6. Paint the dried foam when it hardens.</p>
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<p>7. Unscrew the cap of the bottle with soda water. Place a small piece of paper on top.</p>
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<p>8. Make a cylinder from another sheet of paper. Put there 4 «Mentos» candy dots.</p>
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<p>9 Prepare your viewers for the eruption. Quickly remove the paper from the neck of the bottle. The candy dots will drop into the bottle, and the eruption begins.</p>
<ul><li>Porous surface of «Mentos» cause the rapid formation of carbon dioxide. This chemical reaction produces foam.</li><li>Remove the bottle from the bottom, insert a new bottle and repeat the experiment.</li></ul>
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Категория:Hobbies
