Easy at home science experiments for kids

baking soda, vinegar, science experiment
Fizzy Explosion!

With so much time at home right now, I am always looking for activities to do with my kids where I can use materials which don’t require me to go to the store. Here are a couple of easy kid’s science experiments I have been doing at home with my kids. These simple experiments never seem to get old, and my kids love to do them over and over again:

Fizzy Explosion

Materials Required:

  • Baking Soda
  • Food Coloring (optional)
  • White Vinegar
  • Clear Plastic cup

Instructions:

Put 1-2 tablespoons of baking soda in your plastic cup. Then add 2-3 drops of food coloring. Then add vinegar 3-4 tablespoons. It will only take seconds for the bubbling explosion to begin.

Why does this happen? Baking soda and vinegar have chemistry, and these two substances react with each other because of an acid-base reaction.  Baking soda is bicarbonate or a base and vinegar is acetic acid . The reaction of the two together creates is carbon dioxide, which makes the bubbles.

Homemade Lava Lamp

Materials Required:

  • Alka Seltzer Tabs
  • Food Coloring
  • Cooking Oil
  • Water
  • Empty water bottle

Instructions:

First, fill the empty water bottle about 2/3 full with vegetable oil. Then, fill the rest with water, leaving a little of space at the top. Now, add the food coloring. I don’t recommend shaking the mixture because this will cause bubbles to form making the lava less effective.  When you are ready for the fun, break an Alka-seltzer tablet into four pieces.  Have your child drop in one piece at a time.

What makes the bubbles rise? The oil floats on top of the water because it is less dense or lighter than water. The food coloring has the same density as the water so it sink through the oil and mixes with the water. When you add the tablet it sinks to the bottom then starts to dissolve. The alka-seltzer reacts with the water to produce carbon dioxide gas bubbles. These stick to the water droplets. The water/gas combo makes less dense or lighter than the oil, so they rise to the top of the flask.

I hope your kids enjoy these science experiments as much as my kids do!

Hallie

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