Matt Rogers gives you some fun ideas!
Materials for a Sandbox Volcano
- Sandbox with sand
- Baking soda
- Food coloring
HOW DOES THE SANDBOX VOLCANO WORK?
- You fill the water bottle about a third full. you add 5 teaspoons of baking soda. Put the cap on until you’re ready. once you’ve built a sand mountain around the bottle, uncap it. Pour a good amount of vinegar into the bottle and get out of the way!
- The reason you’re getting this reaction comes down to volume. It’s the reaction you get when you mix baking soda, vinegar and water! This is called an acid-base reaction and one of the main products this creates is carbon dioxide, which is the main cause of the explosion.
THE COLOR CHANGING ROSESMaterials Needed:
- White flowers
- Food coloring
- Glasses or vases
HOW TO MAKE THE COLOR CHANGING ROSES?
- Begin by trimming the flowers down so that they fit nicely in whatever vases or glasses you are using. Giving the flowers a fresh cut also helps them to absorb the colored water more quickly. Fill your vases with the desired amount of water and then have kids add a few drops of food coloring and a flower to each vase.
- As you probably noticed, most plants have a "drinking" problem. Okay, in this case it's a good problem. Most plants "drink" water from the ground through their roots. The water travels up the stem of the plant into the leaves and flowers where it makes food. When a flower is cut, it no longer has its roots, but the stem of the flower still "drinks" up the water and provides it to the leaves and flowers.
- Water evaporating from the leaves, buds, and petals pulls water up the stem of the plant. This works in the same way as sucking on a straw. water that evaporates from the leaves "pulls" other water behind it up to fill the space left by the evaporating water, but instead of your mouth providing the suction (as with a straw) the movement is due to evaporating water.
DIET COKE GEYSER
Here’s how it works: a Diet Coke and mentos eruption is a reaction between the carbonation of the soda and Mentos mints that causes the beverage to spray out of its container. The gas released by the candies pushes all of the liquid up and out of the bottle. This reaction causes carbon dioxide bubbles to form, really quickly.
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