<h1>How to Make Slime</h1><br />
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<p><em>Introduce your kids to a little chemistry with this recipe for fun.</em></p><br />
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<h3>Materials</h3><br />
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• 1 tsp Borax powder<br />
• 1 1/2 cup water<br />
• 1/2 cup white glue<br />
• measuring spoons, measuring cups and 2 bowls<br />
• Food colouring (optional)<br />
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<h3>Directions</h3><br />
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• Pour 1/2 cup of glue into a bowl. Add 1/2 cup of water to the glue and stir.<br />
• If desired, add food colouring. Otherwise, the slime will be an opaque white.<br />
• In a separate bowl, mix 1 cup of water and 1 tsp borax powder.<br />
• Slowly stir the glue mixture into the bowl of Borax solution.<br />
• Take the slime that forms into your hands and knead until it feels dry and firm. (Don't worry about the excess water remaining in the bowl.) You have made slime! Have fun!<br />
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<h3>Tips</h3><br />
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• It will start out as a highly flexible polymer (lots of oozing) but over time it will become stiffer and more like putty.<br />
• Store your slime in a zipper bag in the fridge.<br />
• Use white glue, such as Elmer's brand. Most "school glues" do not have the correct composition.<br />
• Do not eat the slime and do not leave on surfaces that could be stained with food colouring.<br />
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<p><em>Photo by Luis Albuquerque</em></p>
<h1>Singing Cake</h1><br />
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<p><em>Even the food you eat benefits from science; whether it is in the right mix of ingredients or in cooking, science can make a tasty treat. Try this recipe for a singing cake-yes it whistles while cooking! As the ingredients mix and heat up, gas generated inside the batter expands and escapes.</em></p><br />
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<h3>Ingredients</h3><br />
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• 1 cup butter<br />
• 2 cups brown sugar<br />
• 3 eggs, separated<br />
• 2 squares of bitter chocolate<br />
• 1 cup raisins<br />
• 1 cup nuts<br />
• 2 tsp cinnamon<br />
• 1 tsp cloves<br />
• 1 cup strawberry jam<br />
• 4 cups sifted flour<br />
• 2 tsp baking powder<br />
• 1 cup buttermilk<br />
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<h3>Directions</h3><br />
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• Melt two squares of chocolate and set aside.<br />
• Beat the egg whites until stiff and set aside.<br />
• Cream the butter and sugar; add egg yolks. Stir in the melted chocolate, then the raisins.<br />
• Add in cinnamon, cloves, flour, nuts and jam.<br />
• Now add baking powder to the buttermilk and quickly stir into cake mixture.<br />
• Add beaten egg whites and pour into an angel food cake pan. Cook at 350°F for about 45 minutes. Listen up!<br />
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<p></em>Photo by qwrrty, via Flickr (CC)</em></p>
<h1>Seltzer Rockets</h1><br />
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<p><em>These rockets are propelled by pressure built up inside the film canister due to the mixing of Alka-Seltzer and water. The carbon dioxide gas applies a force to both the canister and the lid. Eventually, enough pressure builds to blow apart the canister and lid in opposite directions.</em></p><br />
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<h3>Building the Rocket</h3><br />
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• Wrap a sheet of 8.5x11 paper around a film canister with a lid that snaps inside (ask your local camera store), with the opening of the canister fully accessible. <br />
• Tape the paper (A) securely to the canister, making sure to leave room at the bottom so you can get the lid off and on. Trace out a circle onto another sheet of paper. Cut it out and remove a slice about 1/4 of the area of the circle (B). Roll the paper circle into a cone shape (C). Tape the cone to the top of the rocket.<br />
• Using another sheet of paper, draw and cut out some fins for the rocket. Tape there onto the rocket body.<br />
• You may want to decorate your rocket before launching it.<br />
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<h3>Launching the Rocket</h3><br />
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• Put on safety glasses<br />
• Fill the canister 1/4 full of water.<br />
• Drop in 1/4 of an antacid tablet.<br />
• Snap the lid back on.<br />
• Stand the rocket in a large basin and stand back.<br />
