10 of the BEST Science Experiments for Kids

Here at Science Sparks we’ve tried a lot of science experiments over the years, some have been brilliant first go, some have taken a LOT of tweaking and some have been a complete disaster! Most have been great fun, whatever the outcome. To save you the disasters I’ve put together a list of the BEST science experiments for kids!

The BEST Science Experiments for Kids

1. Mini Baking Soda Rocket

Up first is my mini baking soda powered rocket. A fun way to do this activity is to split it into two parts.

Design the Rocket

It needs to stand up with a gap between where the cork fits and the floor. Remember not to add too many decorations or it will be too heavy.

Launch the Rocket

Experiment with different amounts of baking soda and vinegar to find the best rocket fuel!

Baking Soda Rocket

2. Skittles Experiment

If you haven’t tried the good old skittles experiment where HAVE you been?

Simply pour water over skittles on a plate and watch as the colours dissolves from the candy into the water.

Investigate with different temperatures of water and even different types of sweets. If you have any skittles left over at the end, another idea is to try some candy chromatography.

Skittles Experiment - skittles in water, showing the colours spreading out into the water
Skittles in Water – Science Experiment

3. Elephants Toothpaste

Babble Dabble Do has the most amazing version of this explosive science activity. Elephants toothpaste is always fun!

Elephants Toothpaste from Babble Dabble Do

4. Colour Changing Potions

Everyone loves a fizzy potion, but if you can get it to change colour it’s even better!

If you use red cabbage indicator juice as the basic liquid for a traditional baking soda and vinegar potion it will change colour as it reacts.

colour changing potions
Colour changing potions

5. Chromatography

Chromatography is a fun way to separate the different dyes in inks. All you need is some non washable felt tip pens, filter paper and water. It’s a brilliant colourful science investigation for kids.

A fun twist on this activity is to use candy instead of felt tip pens. Watch as the candy colours separate as they travel up the filter paper.

Candy chromatography experiment

6. Create a Chain Reaction or Rube Goldberg Machine

A Rube Goldberg machine uses the principle of a chain reaction to achieve an end goal. Such as popping a balloon, or delivering an item to someone.

Chain Reaction set up with dominoes and a half pipe
Part of a chain reaction

7. Lolly Stick Explosion

A craft stick or lolly stick explosion is a fantastic group activity or science demonstration.

They take a bit of time to set up, but are definitely worth the effort.

craft stick chain reaction - cool science for kids
Lolly stick chain reaction

8. Oobleck

Oobleck is made from cornflour and water. It’s called a Non Newtonian liquid as it feels solid when you squish it between your fingers, but turns back into a liquid when you release the pressure.

how to make oobleck
Oobleck running through a sieve

9. Absorbing with Sugar Cubes

This activity uses sugar cubes to learn about absorption and properties of materials, especially whether they are waterproof or not.

The idea is to build a tower of sugar cubes and test different materials to see which can save the higher cubes. It’s a lovely visual, hands-on experiment.

sugar cubes experiment - waterproof materials
Absorbing with sugar cubes

10. Bouncy Egg

Do you know how to make an egg bounce?

First you need to remove the shell with vinegar. This leaves just the membrane behind.

bouncy egg with no shell coloured
Bouncy Egg

What do you think? Have I missed any? What would you add to the list? Perhaps a mento geyser?

The best science experiments for kids

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