Kitchen Science!

Colour Changing Milk!

Today we had great fun making amazing and beautiful patterns with milk, food colouring and dish liquid. Have a read and look at some of the cool photos (and soon videos) of our experiment.

Instructions:
1. In a shallow bowl or plate we poured in a layer of milk, enough to cover the bottom of the plate.
2. On the surface of the milk we dropped in a few drops of food colouring.
3. In the middle of the plate we placed a drop of dish liquid and WOW! the milk and food colouring started moving!

Here are some cool photos!

Here are some links to some great websites with more instructions, pictures, videos and great explanations about the science behind this experiment.

http://www.stevespanglerscience.com/lab/experiments/milk-color-explosion/

http://www.coolscience.org/CoolScience/KidScientists/tiedyemilk.htm

http://www.flashbangscience.co.uk/funstuff/experiments/milk.htm

https://www.youtube.com/watch?v=rqQSlEViNpk

HOKEY POKEY

HOKEY POKEY!!
This week we started our kitchen science topic and made delicious Hokey Pokey!

If you want to make Hokey Pokey at home check out the recipe below. 

Recipe:

2 Tablespoons of Golden Syrup

5 Tablespoons of White Sugar

1 Teaspoon of Baking Soda

Method:

1. Line a baking tray with tinfoil and grease.
2. Place the sugar and golden syrup into a pot.
3. On a low-medium heat, heat until all sugar and syrup is melted and runny.
4. The sugar should no longer be in crystals.
5. Turn up the heat until the runny mixture boils.
6. Carefully add the Baking soda and mix quickly!
7. As soon as the mixture is combined, quickly pour into a greased tray to cool.

Science:

We had to melt the sugar and golden syrup on a low-medium heat until all of the sugar crystals were dissolved. Once they have dissolved we had to stop stirring the mixture as this can make them form again. When we added the baking soda we saw that the mixture started to expand and bubble in the pot! This is the chemical reaction!

The heat causes the baking soda to release carbon dioxide, this makes the mixture bubble and expand. As the mixture cools and sets the air bubbles get trapped and make the light and holey hokey pokey!

Here is a picture to show the the air bubbles inside Connor, Lewis, Logan, Seth and Blake's hokey pokey.