Humorous Quick Reads About Families With Kids

10 Simple Science Experiments For Kids to Do

Published September 13, 2020 in Kids Activities - 2 Comments
simple science experiments for kids

Simple science experiments encourage kids to like science because they are easy and fun. Scientific principles make sense to children when they can see the rainbow in a straw or feel the shower from the Coke and Mentos.

simple science experiments for kids

1. Rainbow in a Straw

How can you see the density of different fluids? Create a rainbow in a straw. Because each glass of water contains a different amount of sugar, the densities are different.

Supplies required: 5 clear glasses, water, food colors, sugar, and clear straw

First, fill five glasses 3/4 full of water. Next, add a different food color to each glass so that you have: red, orange, yellow, green, and blue.  Then add sugar to the glasses in the following quantities: red – none, orange – 1 tablespoon (T), yellow – 2 T, green – 3 T, blue – 4 T.

Insert clear straw 1/2 inch into red water. Put your finger on top of the straw. Pull straw out of glass and you will see red water in bottom of straw.

Repeat process with other water colors getting about 1/2 inch of each color in the straw. When you finish, you will have a rainbow in a straw.

Why don’t the different colors mix in the straw?

Because of the sugar you dissolved in each glass, they have different densities. The red has no sugar, thus a lower density. So, it stays on top. The blue has the most sugar, thus the highest density. Therefore, it stays on the bottom.

2. Coke and Mentos

We conducted a cool science experiment for this one! Have you ever seen what happens when you mix Coke and Mentos? If you try it, stand back! You might get wet.

In this activity, we experimented with dropping a package of Mentos candies into a 2 liter bottle of diet cola. Grammy and the boys took turns shaking the Mentos into the Coke.  Read Cool Science Experiment – Coke and Mentos to find out how to do it.

3. Blow Up Balloon

For this experiment, all you need is vinegar and baking soda. Pour vinegar into a clear bottle. Use a recycled water bottle or salad dressing bottle. Scoop baking soda into a balloon. Once the baking soda is in, stretch the balloon opening over the neck of the bottle. Lift up the balloon and dump the baking soda into the bottle. The baking soda reacts with the vinegar and forms a gas that inflates the balloon.

For more information, see Science Experiments for Kids – QWK Week 7.

4. Color with Vinegar and Baking Soda

This experiment doesn’t pop or explode, but it provides a more hands-on experience for the child.

Pour an entire box of baking soda into a baking dish. This becomes the palette. Pour vinegar into several small containers.  Add a different food color to each container.

Provide child with a transfer tool. The reference video 14 Science Experiments for Kids recommended pipettes. I didn’t have any so I used soda straws cut in half.

Show child how to insert straw in vinegar, put his finger on top, move to baking soda pan and remove finger to release colored vinegar. My 4 yo grandson struggled with the straw, but after about five minutes, could transfer successfully.

For more information, see Science Experiments for Kids – QWK Week 7.

5. Balloon Racer

This science experiment challenged our mechanical abilities. Initial attempts failed miserably.

The project involves taping a straw to a balloon. Run a ribbon through the straw and tie one end to the door and one to the chair. Blow up the balloon and let it go. The balloon races down the ribbon to the other end.

Finally, I realized my mistake in trimming the straw. The short straw twisted on the ribbon and prevented the balloon from traveling. I replaced the mini straw with a full sized one. The balloon now sped down the string. This project comes from 10 Easy Science Experiments That Will Amaze Kids.

Be sure to watch the end of the video to see our hilarious failed attempts.

To read about what else we did that week, see How Does Reopening Affect Kids?

6. Balloon Light Switch

My granddaughter assisted in this experiment and her full head of blonde hair aided in generating static electricity.

We had the needed supplies on hand: balloon, fluorescent light bulb, and of course lots of hair. I inflated the balloon and rubbed it in my granddaughter’s hair for 30 seconds. Next, I held the balloon up to the bulb, which lit up. We transferred to the closet so we could see the illumination.

This experiment also came from The Dad Lab: 50 Awesome Science Projects for Parents and Kids by Sergei Urban.

Read about this experiment in 3 Easy Science Experiments.

7. Dancing Raisins

Take two glasses and fill the first one 3/4 full of water. Fill the second glass 3/4 full of ginger ale. Drop a few raisins into the water glass and notice how they rest on the bottom of the glass. Next drop a few raisins into the ginger ale glass. Notice that the raisins initially go to the bottom, but quickly rise to the top.

Bubbles from the carbonation attach to the raisins and cause them to float for a minute. Once the bubbles pop, the raisins sink again. Keep watching and you will notice that more bubbles attach to the raisins at the bottom and they rise again.

See Quarantine Activities – QWK Day 3.

8. Ketchup Diver

If you are looking for an easy science experiment for kids, this is the easiest. Supplies consist of an empty 2 liter bottle, a ketchup packet, and water. Drop the ketchup packet in the bottle, fill the bottle with water and screw on the top. Squeezing the water-filled bottle (this is the hardest part) changes the density of the air bubble in the ketchup packet and causes it to sink.

The ketchup diver demonstrates changes in density and buoyancy in a very visual way.

Read about this experiment in 3 Easy Science Experiments.

9. Oil and Water Color

Pour some oil into a glass. Next drop generous amounts (10 drops or so) of several different food colors. Mix well. The colors will not dissolve into the oil, but mix until you see a fine suspension of color in the oil.

Next, pour the oil into a glass of water. Now comes the fun part. Watch for several minutes as the components separate. First, the oil and water form different layers. Then the colors come out of suspension in the oil and streak through the water creating ever changing lines of color.

Read about this experiment in 3 Easy Science Experiments.

10. Leak Proof Bag – Simple Science Experiment

How can you poke a hole in a bag of water without it leaking? Anytime you create a hole in a container holding water, it springs a leak, right? Not if the container is self-sealing.

Fill plastic bag with water and zip closed. Hold bag over a pan or bowl. Insert pencil into one side of bag and out the other. It doesn’t leak! Try it again with a couple more pencils.

Why doesn’t the bag leak?

Read Fun Science Experiments for Preschoolers to find out why.

Many of these experiments came from  Two Weeks Worth of Fun and Easy Science Experiments  and  10 Easy Science Experiments that Amaze Kids.

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Delia Rose Reply

Wow! Such fun with science & the kids/Grandkids! These all look like fun & make me want to do them as well. Also this seems to make learning Science into a great experimental activity.

Btw, Love the Bloopers! Those are some of your best videos. Especially liked the dancing balloon on a string~! Keep up the great work! We love that you are sharing these with us.

    Nikki Reply

    Thanks! The experiments were a lot of fun. We never know what is going to happen!

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