Fun Science Experiments For Kids
Make An Egg Float In Salt Water
An egg sinks to the bottom if you drop it into a glass of ordinary drinking water but what happens if you add salt? The results are very interesting and can teach you some fun facts about density.
What you'll need:
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One egg
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Water
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Salt
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A tall drinking glass
Instructions:
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Pour water into the glass until it is about half full.
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Stir in lots of salt (about 6 tablespoons).
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Carefully pour in plain water until the glass is nearly full (be careful to not disturb or mix the salty water with the plain water).
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Gently lower the egg into the water and watch what happens.
What's happening?
Salt water is denser than ordinary tap water, the denser the liquid the easier it is for an object to float in it. When you lower the egg into the liquid it drops through the normal tap water until it reaches the salty water, at this point the water is dense enough for the egg to float. If you were careful when you added the tap water to the salt water, they will not have mixed, enabling the egg to amazingly float in the middle of the glass
Make A Vinegar Volcano
Use baking soda and vinegar to create an awesome chemical reaction! Watch as it rapidly fizzes over the container and make sure you've got some towels ready to clean up.
What you'll need:
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Baking Soda (make sure it's not baking powder)
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Vinegar
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A container to hold everything and avoid a big mess!
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Paper towels or a cloth (just in case)
Instructions:
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Place some of the baking soda into your container.
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Pour in some of the vinegar
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Watch as the reaction takes place!
What's happening?
The baking soda (sodium bicarbonate) is a base while the vinegar (acetic acid) is an acid. When they react together they form carbonic acid which is very unstable, it instantly breaks apart into water and carbon dioxide, which creates all the fizzing as it escapes the solution.
For extra effect you can make a realistic looking volcano. It takes some craft skills but it will make your vinegar and baking soda eruptions will look even more impressive!
