Chemistry
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Posted: July 26, 2017Categories: Chemistry
Read more »Colourful Chemicals
Use cabbage water to change kitchen chemicals different colours.
Suitable for kids aged 4+ with parental supervisionCAUTIONThe cabbage water must strictly be prepared by an adult as it involves the use of boiling water.You Need:- Small amount of red cabbage
- Pot of boiling water (to be handled only by an adult)
- Large container to drain cabbage water
- Baking soda
- Citric acid
- Plastic spoons
- Small plastic containers (labelled citric acid, baking soda, cabbage water)
What to do:- Important: have an adult chop half a red cabbage and
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Posted: July 26, 2017Categories: Chemistry
Read more »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 supervisionYou Need:- Hard-boiled egg
- Glass or jar, big enough to hold the egg
- Vinegar
What to do:- 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
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Nappy Bag
How much water can a disposable nappy soak up? Find out with this experiment, and learn about the amazing world of superabsorbent polymers at the same time!
Suitable for kids aged 4+
You Need:- Zip lock bag
- Small piece of a disposal nappy (cut about a 3x3cm square)
- Water
- Food colouring (optional)
What to do:- Put the nappy square into a zip lock bag and add some water (about enough to half cover the nappy square at the bottom of the bag). What happens?
- Add some more water. How does the nappy respond? How much water can you add before
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Posted: July 26, 2017Categories: Chemistry
Read more »The Super Cold Bag
Watch a zip lock bag blow up and become super-cold from a chemical reaction. Youll love this one!
Suitable for kids aged 4+
You Need:
- Citric Acid
- Baking Soda
- Tap Water
- Zip lock bag (15cm x 10cm)
- Measuring cup
- Plastic spoons
- Teaspoon
Perform this experiment over a kitchen sink. There is a small chance the zip lock bag will burst making a wet mess! Zip lock bags of different sizes can be used, but the quantity of chemicals added will vary. Trial and error will uncover the correct amount to use to blow the bag up fully.
What to do:
- Put one level teaspoon of citric acid in a zip lock bag.
- Put one teaspoon of baking soda in the same zip lock bag. And shake the bag gently to mix the two chemicals.
- Fill up the measuring cup with cold tap water (about 30ml).
- Here's where you have to be quick!
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Posted: July 26, 2017Categories: Chemistry
Read more »Get Totally Messy With Gooey SLIME!
Make simple cornflour slime
Suitable for kids aged 4+ You just need two main ingredients for this slime - too easy!You Need:
- Cornflour
- Water
- Food Colouring
- Mixing Bowl and Spoon
What to do:
- Tip some cornflour into a mixing bowl.
- Pour in water, a little at a time, and stir until it becomes a thick paste.
It is easy to add too much water so your slime becomes thin, add more cornflour if this happens. - Stir in 6 to 10 drops of food colouring to make colourful slime.
- Let the slime ooze through your fingers. Is it a liquid? If you punch a heaped pile, hard and fast, it feels like a solid. Is it?
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Energy Stick
Completely safe to touch and handle, simply complete the circuit by touching both electrodes at the end of the stick simultaneously.
