Grow your own pretty crystal ornaments to hang with a solution of Borax.
Got a dinosaur enthusiast at your place? Make a dinosaur egg they can hatch with a chemical reaction!
A packet of Sodium Bicarbonate (baking soda, from the supermarket)
Some food colouring
Small dinosaur figurines (or other animals that hatch out of eggs, such as lizards or birds)
Baking tray with a sheet of baking paper or foil to line it
Vinegar in a small cup or bowl
Pipette (eye dropper) or small spoon
What To Do:
Pour the sodium bicarbonate into the mixing bowl. Put on the gloves, then add a little water and a few drops of food colouring. Mix with a spoon or your hands to form a mouldable paste, adding more water if necessary.
Take a handful of the paste and mould it into a small bowl that you can place a figurine inside. Place more paste on top of the figurine and mould into an egg shape, ma
This activity is perfect for keeping young dinosaur enthusiasts cool on a hot day.
Some small dinosaur figurines (or other animals that hatch out of eggs, such as lizards or birds)
Some round balloons (not water balloons)
Some toy tools, or other safe objects for breaking or melting ice
What To Do:
Stretch a balloon carefully around the figurine, taking extra care not to puncture it with any spikes or claws. (Water balloons are too thin and can break at this point).
Place the opening of the balloon over the end of a tap. Turn the tap on gently and fill the balloon with enough water to surround the figurine.
Seal the balloon and place it gently in the freezer overnight.
When your ‘ice egg’ is completely frozen, use the scissors to remove the balloon.
Place the egg in a tray with appropriate tools, and invite your young dino-e
If you suck on a candy cane long enough, it will dissolve in your mouth. In this experiment you can observe the process up close, and also find out which liquid will dissolve a candy cane the fastest. It is easy to set up with household materials and substances (and a packet of candy canes), and a great opportunity for developing the science skills of hypothesising, observation, measurement, fair testing, comparison and analysis. It also a great way to use up your left over candy canes at Christmas!
- 6 candy canes, any plastic wrapping removed
- 6 clear glasses or jars
- A stopwatch
- 6 different liquids such as cold water, hot water, salty water, water with food colouring, vinegar, oil, juice, milk etc.
What To Do
- Pour different liquids into each glass or jar, then label
If you thought vinegar and bicarb were only good for making messy, oozy volcanoes, think again! Turn an empty cream container into an exciting, explosive rocket with this classic acid/base reaction.Suitable for ages 13 +, best used as a demonstration because of the speed and danger of the projectile
- ¼ cup of vinegar
- 600ml empty, clean cream container
- 1 tablespoon of bicarb powder
What to do:
- Add approximately ¼ cup of vinegar (acid) to a 600ml empty, clean cream container.
- Then, add one heaped tablespoon of bicarb (base).
- Quickly push the cream lid on, and point the container away
Soak a hard-boiled egg in vinegar to transform it into a rubbery egg that can bounce like a ballSuitable for kids aged 4+ with parental supervisionYou Need:
What to do:
- Hard-boiled egg
- Glass or jar, big enough to hold the egg
- Place the hard-boiled egg in the glass or jar.
- 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?
- 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.
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
- Food colouring
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:
What to do:
- An empty soft drink bottle with cap, or clear jar/container with a lid
- Vegetable oil
- Alka-Seltzer tablets (from the supermarket)
- Food colouring
- Fill the bottle (or container) about full with vegetable oil.
- Carefully fill the rest of the bottle/container with water (nearly to
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:
What to do:
- 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
- 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 you
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 supervisionCAUTIONThis 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 or