Science Experiments for Kids

Chemistry

Try This: Foaming at the Mouth by Tom Robinson

You put something in your mouth every day that has the ability to produce bubbles in a similar fashion to the previous experiment. However, this doesn't involve any acids, just toothpaste and a can of soda.

QUESTION

How can I make myself foam at the mouth?

MATERIALS

Baking soda toothpaste	Carbonated soda or water
Toothbrush	Sink

</h2> <p><emphasis role="Bolditalic">carbonated soda:</emphasis> a soft drink that has carbon dioxide gas in it, making it fizzy.</p> </div> <h2>PROCEDURE</h2> <ul> <li><p>Brush your teeth with the toothpaste as you normally would.</p></li> <li><p>Instead of spitting when you are done, open your mouth and take a sip of the carbonated soda or water. You should feel fizzing in your mouth.</p></li> <li><p>Open your mouth and let the foam come rolling out!</p></li> </ul> <p>CAUTION: This should be performed only under adult supervision. Also, make sure you have a place for the foam to flow into. Never try to swallow it or keep it in your mouth. You could get very sick from swallowing too much of this mixture.</p> <div class="npsb"> <h2>Fun Facts</h2> <p><B>New dental cleaning techniques involve using baking soda as an abrasive in place of scraping</B>.</p> <p><B>Baking soda toothpaste is an effective way of removing crayon marks from walls</B>.</p> </div> <h2>WHAT'S HAPPENING</h2> <p>The ingredients of baking soda toothpaste are designed to make some bubbles, as you've probably noticed during your normal brushing routine. Adding the carbonated beverage, which has carbon dioxide gas, produces a reaction that will keep the bubbles coming and coming.</p> <div class="npmo"><img src="http://0.tqn.com/d/np/kids-science-experiments/emc.jpg" format="JPG"></div> <h2>KIDS' LABS LESSONS</h2> <p><B>QUESTION</B> What makes things fizzy?</p> <p><B>EXPERIMENT OVERVIEW</B> In this experiment, you will produce different combinations of mixtures that react to form fizzy solutions. You'll start with a baking soda/vinegar mixture, and then move on to make your own safe-to-drink, though not particularly tasty, lemon soda.</p> <p><B>SCIENCE CONCEPT</B> Certain materials, when brought into contact with other materials, react in a way that forms bubbles. Acids and bases often combine to form carbon dioxide, which, as a gas, is what makes carbonated soda fizzy. You'll be experimenting with several common ingredients to determine which react in this way.</p> <p><B>MATERIALS</B></p> <table frame="none" width="100%"> <h2> <tgroup cols="2"> <colspec colname="col1" colnum="1" colwidth="50%" colsep="0" rowsep="0" align="left"/> <colspec colname="col2" colnum="2" colwidth="50%" colsep="0" rowsep="0" align="left"/> <thead> <tr> <td><p>Part I</p></td> <td><p>Part II</p></td> </tr> </thead> <tbody> <tr> <td><p>½ cup vinegar</p></td> <td><p>Food coloring</p></td> </tr> <tr> <td><p>20-ounce glass bottle</p></td> <td><p>A pitcher of water</p></td> </tr> <tr> <td><p>2 tablespoons baking soda</p></td> <td><p>3 teaspoons baking soda</p></td> </tr> <tr> <td><p>¼ cup water</p></td> <td><p>2 tablespoons sugar</p></td> </tr> <tr> <entry/> <td><p>2 tablespoons lemon juice</p></td> </tr> </tbody> </tgroup> </table> <p><B>Part III</B></p> <p>Large glass filled with water</p> <p>Small (¼ pound at the largest) piece of dry ice (available at many grocery stores or fish markets — you may need an adult to buy and handle it for you)</p> <p><B>PROCEDURE</B></p> <p><emphasis role="Bolditalic">Part I</emphasis></p> <ul> <li><p>Pour vinegar into the bottle.</p></li> <li><p>Dissolve baking soda in water and pour the mixture into the bottle.</p></li> <li><p>Watch what happens.</p></li> </ul> <div class="npsb"> <title></h2> <p><emphasis role="Bolditalic">solution:</emphasis> a mixture of two or more liquids.</p> </div> <p><emphasis role="Bolditalic">Part II</emphasis></p> <ul> <li><p>With the food coloring, color the water in your pitcher any color you like. This is just for looks, but you will be able to drink your concoction when you are done, so pick a color you would like to drink.</p></li> <li><p>Stir in baking soda and sugar. Mix until they dissolve.</p></li> <li><p>Add lemon juice and watch your drink become carbonated!</p></li> </ul> <div class="npmo"><img src="http://0.tqn.com/d/np/kids-science-experiments/p39-001.jpg" format="JPG"></div> <p><emphasis role="Bolditalic">Part III</emphasis></p> <ul> <li><p>Place the dry ice in the water and watch what happens. CAUTION: Dry ice is very cold and should be handled only with gloves with close adult supervision.</p></li> </ul> <p><B>QUESTIONS FOR THE SCIENTIST</B></p> <ul> <li><p>What kinds of materials reacted to make bubbles?____________________________</p></li> <li><p>How did your soda taste? Can you think of any ingredients you could add to improve the taste?______________________________________________</p></li> <li><p>Would your lemon drink work with any other fruit's juice? 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