Free Science Experiments

Here is a huge assortment of fun and educational science experiments that you can perform at home.  Best of all, they are free and simple, and most only require basic household items.

  1. Chocolate Leaves

    Chocolate Leaves

    Chocolate leaves

    Make some stunning chocolate leaves as a novel and delicious way to learn about the changing states of matter.

    Suitable for kids aged 5+ with parental supervision

    CAUTIONThis science activity involves the use of boiling water. Hot water must only be handled by an adult.
    You Need:
    • Metal or heat resistant bowl
    • Saucepan
    • Wooden spoon or similar
    • Chocolate
    • Large non-poisonous leaves (rose, ivy, mample or lemon leaves work well)
    • Boiling water
    • Clean paintbrush
    What to do:
    1. Wash the leaves and dry them gently, careful not to damage
    Read more »
  2. Glowing Water

    Glowing Water

    Glowing Water

    Make water glow eerily under a black light using the fluorescent dye found in highlighters. Glowing water can create some exciting special effects when used in fountains, or use it to transfer glow to bubbles, ice and slime.

    Suitable for kids aged 8 + with parental supervision

    CAUTIONThis science activity involves the use of a sharp knife to cut open a highlighter pen and the ink-soaked felt inside the highlighter. This must only be done by an adult.
    You Need:
    • Yellow highlighter felt pen
    • UV light, or black light
    • Gloves
    • Clear glass or container
    • Water
    What to do:
    Read more »
  3. Elephant Toothpaste

    Elephant Toothpaste

    This COOL chemical reaction spews froth and foam everywhere. Just like a gigantic tube of toothpaste fit for an elephant.

    Suitable for kids aged 5+ with parental supervision.

    You Need:
    • An empty soft drink bottle (600mL size works best)
    • cup of 6% hydrogen peroxide solution (purchased from a hairdresser/beauty supply store or chemist)
    • Squirt of dishwashing liquid
    • 4 drops of food colouring
    • 1 teaspoon of dry bakers yeast dissolved in approximately 2 tablespoons of warm/hot water
    • Funnel
    • Safety goggles
    • Lab smock (optional)
    • Tray or foil cake tin to contain mess (optional)
    NOTEThe best part of this
    Read more »
  4. Chip Bag Shrinkies

    Chip Bag Shrinkies

    Chip Bag Shrinkies

    Shrink your chip bags to less than half their size, then use them as a bookmark or keychain. Polymer chemistry fun!

    Suitable for kids aged 10+ with parental supervision

    CAUTIONThis activity strictly requires supervision by an adult. It involves the use of a hot oven and handling hot plastic. Ensure that the room is well ventilated, so all fumes given off by the heated plastic chip bag dissipate as quickly as possible.
    You Need:
    • Empty bag of chips (plastic outside, aluminium inside)
    • Baking tray x 2 (or oven proof plates)
    • Sheets of baking paper x 2 (bigger than the chip bag)
    • Towel
    • Oven mitts
    • Oven
    Read more »
  5. Milk Plastic

    Milk Plastic

    Milk Plastic

    Make plastic from milk easily using vinegar. Then mould your milk plastic into fun shapes!

    Suitable for kids aged 6+ with parental supervision

    CAUTIONThis activity involves heating milk in a microwave or on a stove top, and requires adult supervision.
    You Need:
    • One cup of milk
    • 4 teaspoons of white vinegar
    • A microwave safe bowl
    • A strainer fine sieve or cloth
    • Spoon
    • Microwave oven
    What to do:
    1. With an adults help, heat the milk in a microwave for a minute or so. It needs to be hot, but not boiling. If you have a liquid thermometer, a good temperature
    Read more »
  6. Grow Your Own Crystal Snow Flake

    Grow Your Own Crystal Snow Flake

    Use borax solution to easily grow a delicate crystal snowflake

    Grow a crystal snowflake as a pretty Christmas decoration... A great hands-on chemistry project for the festive season.

    Suitable for kids aged 4+

    You Need:
    • A Wide Mouth Jar
    • Pipe Cleaner (white, silver or blue are good choices)
    • Borax (available from the supermarket laundry aisle)
    • Boiling Water
    • Tablespoon
    • String
    • Scissors
    • Pencil
    • Food Colouring (optional)
    What to do:
    1. Using scissors, cut a pipe cleaner into three equal sections.
    2. Twist the pipe cleaner sections together
    Read more »
  7. Magnetic Slime

    Magnetic Slime

    Get Totally Messy With Gooey, Magnetic SLIME!

    Why make simple slime when you can make super gooey and magnetic slime??

    Suitable for kids aged 5+

    You just need three main ingredients for this slime - too easy!
    You Need:
    • PVA Glue (Elmers glue works best)
    • Liquid starch (Borax Solution could also be used)
    • Iron Filings or Iron Oxide powder
    • Mixing Bowl and Spoon
    • Magnets
    • Disposable gloves

    What to do:
    1. Pour
    Read more »
  8. Waterproof Sand

    Waterproof Sand

    Play with magic sand that never gets wet!

    Why play with ordinary sand when you can make hydrophobic sand that is literally scared of water?

    Suitable for kids aged 5+

    Two ingredients = Too easy!
    You Need:
    • Regular or coloured sand
    • Waterproofing Spray (eg. Scotchgard or other fabric protector)
    • Baking Tray
    For more details watch video below.

    What to do:
    1. Spread the sand evenly on the baking tray.
    2. Spray the sand with the fabric protector.
    3. Mix
    Read more »
  9. Make your own Bath bomb

    Make your own Bath bomb

    Bring chemistry into the bathroom. Make bath time fun!

    Make your own bath bomb from household ingredients and marvel over the fizzy, colourful chemistry happening around you.

    Suitable for kids aged 6+
    You Need:
    • Food colouring
    • Sweet Almond oil (use different oil if allergic to nuts)
    • 10 tablespoons of bicarbonate soda
    • 3 tablespoons of citric acid
    • 2 large mixing bowls
    • 1 large muffin tray
    • 1 small glass jar
    • Rubber gloves
    • Spoons
    • Scented oil, glitter or flower petals
    • Spoons
    Read more »
  10. Tornado In A Bottle

    Tornado In A Bottle

    Tornado In A Bottle

    Tame the destructive force of a tornado by creating a mini one in a bottle. It's fun and easy!

    Suitable for kids aged 4+

    You Need:
    • Empty plastic bottle with lid. Any size, 500ml works well
    • Two drops of liquid detergent (clear detergent works best)
    • Teaspoon of glitter (optional)
    • Food colouring (optional)
    What to do:
    1. Almost fill the plastic bottle with cold tap water.
    2. Add the liquid detergent.
    3. Add glitter to the bottle.
    4. Screw on the cap tightly.
    5. Hold the bottle by the neck and turn it upside down.
    Read more »