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December 2016 FREE 4 ALL Holiday Edition 23 What’s happening The dishwashing liquid does not mix with the milk. Instead, it floats on top and spreads over the surface. As it spreads, it grabs the food colouring. Soap is a ‘degreaser’, so the molecules in it are attacking the fat in the milk, causing motion. This creates the swirling of the colours. Where the colours meet, they combine and form new colours. Perfect for the ‘quizzy’ learners from Grade 8 -12 Contact details: [email protected] www.nkazisciences.co.za Bathabile: 082 301 6726 Roderick: 082 923 5946 Discover the world of science through YOUR OWN SAFE MINI-LAB! INSIDE YOUR KIT: Everything for 52 exciting experiments All laboratory apparatus All Chemicals Unleash the Scientist in YOU! Nkazimulo Applied Sciences Get hands-on-experience with the all fun of science. You will need • Milk (must be either full cream or 2%) • Food colouring (the more colours the better) • Dishwashing liquid • Shallow dish or bowl What to do • Pour some milk into a shallow dish or bowl until the milk covers the bottom. • Add some drops of food colouring to the milk. You can use a variety of colours, just be sure to add 3-4 drops of each colour. • Add a small drop of dishwashing liquid into the centre of the liquid. • Watch in amazement as the colours dance across the surface of the liquid. What’s happening You have just created an acid-based reaction in your mouth. When you combine an acid (the citric acid) and an alkaline (the bicarbonate of soda) with saliva they mix together to create a gas in the form of many tiny bubbles. This is called an acid-based reaction and it’s what gives sherbet its fizz. You are actually feeling the sensation of carbon dioxide bubbles on your tongue. SCIENCE FUN You will need • 5 ml citric acid • 5 ml bicarbonate of soda • 50 ml castor sugar • 25 ml flavoured jelly powder • Small ziplock bags or jars for storage What to do • Mix all the ingredients together in a bowl. • Taste the fizz! • Use different flavoured jelly for variety. • If it is too bitter you may want to add a little more sugar. • If it is not fizzy enough you may need to add a little more citric acid. THE SCIENCE BEHIND IT THE SCIENCE BEHIND IT RAINBOW MILK FIZZY SHERBET : : : :

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Page 1: FUN SCIENCE - free4all.co.za · its fi zz. You are actually feeling the sensation of carbon dioxide bubbles on your tongue. SCIENCE FUN You will need • 5 ml citric acid • 5 ml

December 2016 FREE 4 ALL Holiday Edition 23

What’s happeningThe dishwashing liquid does not mix with the milk. Instead, it

fl oats on top and spreads over the surface. As it spreads,it grabs the food colouring. Soap is a ‘degreaser’, so the

molecules in it are attacking the fat in the milk, causing motion. This creates the swirling of the colours. Where the colours meet,

they combine and form new colours.

Perfect for the ‘quizzy’ learners from Grade 8-12

Contact details:[email protected]

Bathabile: 082 301 6726Roderick: 082 923 5946

December 2016

info@nkazisciences.co.zawww.nkazisciences.co.zawww.nkazisciences.co.za

Bathabile: 082 301 6726Bathabile: 082 301 6726Roderick: 082 923 5946Roderick: 082 923 5946Roderick: 082 923 5946

Discover the world of science throughYOUR OWN SAFE MINI-LAB!

INSIDE YOUR KIT:Everything for 52 exciting experiments

All laboratory apparatusAll Chemicals

Unleash the Scientist in YOU!

Nkazimulo Applied Sciences

Get hands-on-experience with the all fun of science.

You will need• Milk (must be either full cream or 2%)• Food colouring (the more colours the better)• Dishwashing liquid• Shallow dish or bowl

What to do• Pour some milk into a shallow dish or bowl until the milk covers the bottom. • Add some drops of food colouring to the milk. You can use a variety of colours, just be sure to add 3-4 drops of each colour.• Add a small drop of dishwashing liquid into the centre of the liquid.• Watch in amazement as the colours dance across the surface of the liquid.

What’s happeningYou have just created an acid-based reaction in your mouth. When you combine an acid (the citric acid) and an alkaline (the bicarbonate of soda) with saliva they mix together to create a gas in the form of many tiny bubbles. This iscalled an acid-based reaction and it’s what gives sherbet its fi zz. You are actually feeling the sensation of carbon dioxide bubbleson your tongue.

SCIENCEFUN

You will need• 5 ml citric acid• 5 ml bicarbonate of soda• 50 ml castor sugar• 25 ml fl avoured jelly powder• Small ziplock bags or jars for storage

What to do• Mix all the ingredients together in a bowl.• Taste the fi zz!

• Use different fl avoured jelly for variety.

• If it is too bitter you maywant to add a little more sugar.

• If it is not fi zzy enough you may need to add a little more citric acid.

THE SCIENCE BEHIND IT

THE SCIENCE BEHIND IT

RAINBOW MILK

FIZZY SHERBET:

:

:

:

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FUN SCIENCE - FREE 4 ALL · its fi zz. You are actually feeling the sensation of carbon dioxide bubbles on your tongue. SCIENCE FUN You will need • 5 ml citric acid • 5 ml bicarbonate

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