What is that white powder?

Aim: To learn about the makeup of different white powders.

There are  a number of different white powders in our everyday life. Some of these are harmful and others are not. Test the four white powders listed to see which one has been found at the airport.

Here are some examples of everyday kitchen white powders.

Flour

Cornflour

Sugar

Salt

Baking Soda

Baking Powder

Icing Sugar

Tartaric Acid

Citric Acid

Gluten Free flour

Materials

1.  Black paper
2.  Magnifier glasses
3.  Sugar
4.  Salt
5.  Cornflour
6.  Baking soda


Upload a photo of each powder.

1.  Cornflour 
2.  Baking Soda
3.  Salt
4. Sugar 

On the black cardboard using a microscope you need to record what you see. You will be given a small amount of 4 white powders on your cardboard. Look at them under your microscope and record what you see. 
Do not mix the powders or taste the powders.

Findings:

	Sugar	Salt	Baking Soda	Cornflour
Appearance	it looked like it was burnt toffee.	it looked like green crumbly eggs.	It just looked like a egg because of the white out side and the orange brown in the middle.	The cornflower looked like it was really dry.
Texture	It was very crumbly, crunchy and very liquid.	very dry and crusty. it felt like dry sand.	It was really wet and it felt like it was wet sand but it was sifted.	The cornflower turned into oobleck.
Smell	All the sugar sort of smells like rotten fish.	the smell was really strong and it smelt like it was rotten.	The baking soda didn't really smell like anything.	It smelt like it was nothing.
Iodine	It turned black brown ish like toffee.	it turned into a green ish like wet sand colour.	It was a very yucky yellow green type color.	It was a very yucky colour it looked like it was actually rotten.
Water	stayed the same.	stayed the same.	stayed the same.	stayed the same.
Vinegar	stayed the same.	stayed the same.	stayed the same.	stayed the same.

Write a paragraph about your findings.

Some of the ingredients stayed the same but some of them changed specially with the Iodine.