10 Easy At-Home Science Experiments for Kids: Connect and Compete

Science can be one of the most fascinating subjects for kids, especially when they get the chance to explore it hands-on. At-home science experiments are an excellent way for children to engage with the world around them, develop problem-solving skills, and spark curiosity. Science becomes not just something to study, but something to do, and that makes all the difference.

The beauty of at-home experiments is that they are simple, engaging, and often use materials you already have. Not only do these activities make science fun, but they also allow families to connect through learning.

And with the “Connect and Compete” theme, families can make science even more exciting by seeing who can create the best results or get the most accurate outcomes.

This article presents 10 easy, exciting science experiments for kids to do at home, complete with step-by-step instructions and explanations of the scientific principles behind each experiment. Let’s dive in!

1. Volcano Eruption with Baking Soda and Vinegar

One of the most iconic and fun science experiments is creating a homemade volcano. This experiment uses a simple chemical reaction to simulate an eruption, making it both educational and exciting for kids.

Scientific Principle

This experiment demonstrates an acid-base reaction. Baking soda (a base) reacts with vinegar (an acid) to produce carbon dioxide gas, which creates the foamy eruption.

Materials Needed:

•  Baking soda
•  Vinegar
•  Dish soap (optional for more foam)
•  Red food coloring (to mimic lava)
•  A small plastic bottle or papermâché volcano structure

StepbyStep Instructions:

1. Place a plastic bottle in the middle of a tray or construct a papermâché volcano around it.
2. Add 23 tablespoons of baking soda into the bottle.
3. If you want extra foam, add a squirt of dish soap and a few drops of red food coloring for a lava effect.
4. Pour vinegar into the bottle and watch the eruption! The reaction between the vinegar and baking soda will create foam that spills out of the bottle like lava from a volcano.

Learning Outcome  

Children will learn about chemical reactions, particularly how gases like carbon dioxide are produced during the interaction between an acid and a base.

Compete Challenge

Challenge each other to create the most creative volcano structures. Use materials like cardboard, clay, or even Legos to design an imaginative volcano.

2. Walking Water Experiment

The walking water experiment is a simple and colorful way to demonstrate how water moves through materials, just like how water travels up a plant’s roots.

Scientific Principle 

This experiment shows capillary action, which is how liquids can move through small spaces without the assistance of gravity. This is the same process that allows plants to absorb water from their roots and transport it to the rest of the plant.

Materials Needed:

•  6 clear cups
•  Water
•  Food coloring (variety of colors)
•  Paper towels

StepbyStep Instructions:

1. Arrange 6 clear cups in a row. Fill the 1st, 3rd, and 5th cups halfway with water. Leave the 2nd, 4th, and 6th cups empty.
2. Add a few drops of different food coloring into the cups with water.
3. Fold paper towels into strips and place one end in the colored water and the other end into the empty cup next to it.
4. Watch as the water “walks” up the paper towels and into the empty cups, eventually mixing colors and creating a rainbow effect.

Learning Outcome  

This experiment demonstrates how water moves through materials by capillary action. It’s an excellent introduction to how plants absorb water through their roots and how different colors combine to form new ones.

Compete Challenge  

Compete by predicting which color combinations will form in the empty cups. Who can guess the final color outcome the most accurately?

3. Egg in a Bottle

In this classic experiment, you’ll show how differences in air pressure can cause an egg to be pulled into a bottle, all without being touched.

Scientific Principle 

This experiment demonstrates air pressure in action. Heating the air inside the bottle causes it to expand. When the flame goes out and the air cools, the pressure inside the bottle drops. The higher pressure outside the bottle pushes the egg inside.

Materials Needed:

•  A hardboiled egg (peeled)
•  A glass bottle with an opening slightly smaller than the egg
•  Matches or a small piece of burning paper

StepbyStep Instructions:

1. Light a match or small piece of paper and drop it into the bottle.
2. Quickly place the egg on top of the bottle’s opening
3. As the air inside cools, the egg will be sucked into the bottle.

Learning Outcome 

This experiment demonstrates the concept of air pressure and how changes in temperature affect air movement.

Compete Challenge  

Time how long it takes for the egg to be pulled into the bottle. See who can get the egg inside the bottle the fastest!

4. DIY Lava Lamp

This fun experiment mimics the look of a lava lamp using simple household ingredients. Kids will love watching the colorful bubbles float and sink, just like a real lava lamp!

Scientific Principle  

Oil and water have different densities, which causes them to separate. When you add a fizzy tablet like AlkaSeltzer, it reacts with the water, creating bubbles of carbon dioxide that rise through the oil.

Materials Needed:

•  Clear bottle or jar
•  Water
•  Vegetable oil
•  Food coloring
•  AlkaSeltzer or baking soda with vinegar

StepbyStep Instructions:

1. Fill a clear bottle halfway with water and add a few drops of food coloring.
2. Fill the rest of the bottle with vegetable oil, leaving some space at the top.
3. Break an AlkaSeltzer tablet into pieces and drop it into the bottle.
4. Watch as the bubbles rise and fall, creating a lavalamplike effect.

Learning Outcome  

This experiment teaches kids about liquid density and chemical reactions. They’ll learn why oil and water don’t mix and how gas bubbles form in a liquid.

Compete Challenge  

Try different color combinations and see who can make the most vibrant lava lamp!

5. Magic Milk Experiment

The magic milk experiment is a colorful demonstration of surface tension in liquids. Kids will be amazed by how the colors swirl and dance in the milk when soap is added.

Scientific Principle  

This experiment demonstrates how soap interacts with fat molecules in milk, breaking the surface tension and causing the food coloring to move and mix.

Materials Needed:

•  A shallow dish
•  Milk (whole milk works best)
•  Food coloring
•  Dish soap
•  Cotton swab

StepbyStep Instructions:

1. Pour milk into the shallow dish.
2. Add a few drops of different food coloring around the surface of the milk.
3. Dip a cotton swab into dish soap and gently touch it to the surface of the milk.
4. Watch the colors move and swirl as the soap breaks the surface tension.

Learning Outcome

Kids will learn about surface tension and how soap breaks it, causing fat molecules in the milk to move and create a colorful display.

Compete Challenge  

See who can create the most beautiful, swirling designs in their milk!

6. Homemade Slime

Making slime is a favorite activity for kids, and it also teaches them about chemical reactions and polymers. With a few simple ingredients, you can create stretchy, moldable slime at home.

Scientific Principle  

Slime is made from polymers—long chains of molecules that give the slime its stretchy, gooey properties. When you mix glue and borax, you create a new substance that behaves like a solid and a liquid.

Materials Needed:

•  White school glue
•  Borax (or contact lens solution with boric acid)
•  Water
•  Food coloring or glitter (optional)

StepbyStep Instructions:

1. In a bowl, mix equal parts white glue and water.
2. In a separate container, dissolve 1 teaspoon of borax in warm water.
3. Slowly add the borax solution to the glue mixture, stirring until the slime forms.
4. Add food coloring or glitter to customize your slime.

Learning Outcome  

This experiment teaches kids about the properties of polymers and how combining certain chemicals changes the texture of a substance.

Compete Challenge 

Who can create the most unique slime by adding different textures or colors?

7. Dancing Raisins Experiment

This easy experiment will make raisins appear to “dance” in a glass of carbonated water, thanks to the power of carbonation and buoyancy.

Scientific Principle  

The carbon dioxide bubbles in carbonated water attach to the raisins, making them buoyant. Once the bubbles pop, the raisins sink, creating a “dancing” effect as they rise and fall.

Materials Needed:

•  Clear glass
•  Carbonated water (or any fizzy drink)
•  Raisins

StepbyStep Instructions:

1. Pour carbonated water into a clear glass.
2. Drop a few raisins into the glass.
3. As the bubbles lift, watch as they rise and fall.

Learning Outcome  

Kids will learn about buoyancy and how gas bubbles in a liquid can make objects rise and sink.

Compete Challenge  

See who can get the most raisins “dancing” in their glass!

8. Static Electricity Balloon Experiment

This fun and easy experiment will demonstrate the power of static electricity. Kids will love how they can make paper jump or their hair stand on end just by rubbing a balloon.

Scientific Principle  

Static electricity occurs when certain materials become electrically charged through friction. When you rub a balloon on your hair or a sweater, you create a charge that can attract or repel objects.

Materials Needed:

•  Balloon
•  Hair or wool sweater
•  Paper or small lightweight objects

StepbyStep Instructions:

1. Blow up a balloon.
2. Rub the balloon against your hair or a wool sweater for 1020 seconds.
3. Hold the balloon near small pieces of paper or watch as it makes your hair stand up.

Learning Outcome  

Kids will learn about static electricity and how it works, as well as how objects can be attracted or repelled based on electric charge.

Compete Challenge 

See who can pick up the most paper pieces using only static electricity!

9. The Bouncing Egg Experiment

In this experiment, kids will see how an egg can be transformed into a rubbery, bouncing ball by dissolving its shell in vinegar.

Scientific Principle  

The acetic acid in vinegar reacts with the calcium carbonate in an eggshell, dissolving it and leaving the inner membrane intact, making the egg bouncy.

Materials Needed:

•  A raw egg
•  Vinegar
•  A jar

StepbyStep Instructions:

1. Place a raw egg in a jar and cover it with vinegar.
2. Let the egg sit in the vinegar for 2448 hours.
3. Remove the egg and rinse it under water. The shell should be gone, and the egg will feel rubbery.
4. Gently bounce the egg to test its elasticity.

Learning Outcome 

This experiment shows how acids react with calcium carbonate and introduces kids to the concept of chemical reactions.

Compete Challenge 

See how high you can bounce the egg without breaking it!

10. Balloon Rocket Experiment

Kids will love launching a balloon rocket across the room using string and a straw. This experiment demonstrates the power of air pressure and motion.

Scientific Principle  

This experiment is a fun way to demonstrate Newton’s third law of motion: For every action, there is an equal and opposite reaction. The air escaping from the balloon pushes it forward along the string.

Materials Needed:

•  Balloon
•  String
•  Straw
•  Tape

StepbyStep Instructions:

1. Attach a long piece of string to two stationary objects (like chairs).
2. Thread a straw onto the string and tape an inflated balloon to the straw (don’t tie the balloon).
3. Release the balloon and watch it zoom along the string.

Learning Outcome  

Kids will learn about Newton’s laws of motion and how the release of air from the balloon creates a reaction that propels it forward.

Compete Challenge

Who can launch the balloon rocket the farthest or fastest?

Conclusion

Science experiments are an amazing way to bring learning into the home, fostering curiosity and creativity in children. By exploring these 10 easy science experiments, kids can gain a better understanding of the world around them while developing critical thinking skills. 

By incorporating a competitive element, families can connect through learning and make each experiment more exciting. Challenge one another to see who can get the best results, make the most accurate predictions, or come up with the most creative designs. 

Whether you’re building a volcano or making a bouncing egg, these experiments offer endless fun and educational value for kids of all ages.

Science is all about discovery, so keep experimenting, exploring, and enjoying the process of learning!