Monthly Archives: July 2017

  1. Rubber Egg

    Rubber Egg

    Rubber Egg

    Soak a hard-boiled egg in vinegar to transform it into a rubbery egg that can bounce like a ball

    Suitable for kids aged 4+ with parental supervision

    You Need:
    • Hard-boiled egg
    • Glass or jar, big enough to hold the egg
    • Vinegar
    What to do:
    1. Place the hard-boiled egg in the glass or jar.
    2. Pour enough vinegar into the jar to completely cover the egg. Look closely, what do you see? Can you see some tiny bubbles start to form on the shell? Why?
    3. When the shell has completely dissolved, after about 3 days or so, remove the egg from the jar and gently rinse it with tap water
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  2. Disappearing Ghost Crystals

    Disappearing Ghost Crystals

    Disappearing Ghost Crystals

    Watch these hard crystals swell and grow into jelly-like pieces with water. Then amaze your friends when they disappear in water, or add some food colouring for cool effects. Welcome to the amazing world of superabsorbent polyemers!

    Suitable for kids aged 5+ with parental supervision.

    CAUTION
    Ghost crystals are generally considered non-toxic and are safe for use around young children unless ingested. If ghost crystals are swallowed do not give liquids. Seek medical advice.

    You Need:
    • Water absorbing crystals (available from your local nursery or garden supply centre)
    • Transparent cup, beaker or glass
    • Water
    • Food colouring
    Read more »
  3. Lava Lamp

    Lava Lamp

    Make your own hypnotic lava lamp with oil and water and a secret ingredient that makes it fizz and bubble.

    Suitable for kids aged 5+ with parental supervision.

    CAUTION
    Remember Alka-Seltzer tablets are a medicine, do not ingest. Read the packet instructions for more information.

    You Need:
    • An empty soft drink bottle with cap, or clear jar/container with a lid
    • Vegetable oil
    • Alka-Seltzer tablets (from the supermarket)
    • Food colouring
    • Water
    What to do:
    1. Fill the bottle (or container) about full with vegetable oil.
    2. Carefully fill the rest of the bottle/container with water (nearly
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  4. Ink Chromatography

    Ink Chromatography

    Ink Chromatography Is black really black?

    Separate out all the colours that make up a black felt pen using a special technique called chromatography.

    Suitable for kids aged 7+

    You Need:
    • Filter or blotting paper (a coffee filter works well) cut into strips (approx. 1.5cm wide and just short of the length of the cup)
    • Transparent glass or plastic cup
    • Icy pole stick
    • 2 x black felt pens
    • Water
    What to do:
    1. Take a pen and draw a horizontal line near the bottom of two strips of filter paper. Use a different pen for each strip. You can test more than two pens on other strips if
    Read more »
  5. Gas Candle Detection

    Gas Candle Detection

    Gas Flame Detection

    Detect Carbon Dioxide gas with a candle flame. Will the flame get smaller, bigger, snuff out, change colour? How the flame behaves tells you the type of invisible gas present.

    Suitable for kids aged 10+ with parental supervision

    CAUTIONThis experiment requires use of an open candle flame. Please exercise caution, and only perform under adult supervision. It also requires the use of a knife to cut a candle. This task should only be undertaken by an adult.
    You Need:
    • 2-3cm candle piece with wick (have an adult cut the piece using a knife from an ordinary household candle)
    • Aluminium foil patty pan
    • Piece of wire about 40cm in length
    • Chop Stick o
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  6. Make A Gelatin Disc

    Make A Gelatin Disc

    Make A Gelatin Disc

    Best known for making jelly, gelatin is a fascinating substance that is used as a gelling agent not just in food, but in many other things. Heres how to make your very own gelatin product that can be used in further experiments or in some very cool artwork.

    Suitable for kids aged 5 +

    CAUTION This experiment requires the use of a small amount of hot water. This should be handled with care under the supervision of an adult.
    You Need:
    • Small round mould (the underside of a jar lid works well)
    • 3 x teaspoons of gelatin
    • Cup or glass
    • Spoon or icy pole stick
    • Food dye
    • 40mls of hot water
    Read more »
  7. 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
    Read more »
  8. 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 »
  9. 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
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  10. 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 »
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