white powder.

Today you will be a Forensic Chemist. 

A bag of white powder has been confiscated by airport customs.  You need to find out what white powder it is?

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

You will be given a small amount of 4 white powders on your cardboard. On the black cardboard using a magnifying glass look at the powders.

Look at them under your magnifying glass and record what you see. 

These are the four powders we will be using. Upload a photo of each powder. 


Before you add the iodine, vinegar or water you will need to divide each powder into 3.

Materials

1.  iodine
2.  vinegar
3.  water
4.  sugar
5.  cornflour
6.   baking soda
7. salt
8.cardbord
9.pipet

Steps

1. get a piece of cardboard and put the 4 white powders in the corners.
2. put the powder in the corners in thirds.
3. but all the three liquids in a third of a corner.
4. only but three drops.
5. watch and learn.
6. look and see what happens.

	Sugar	Salt	Baking Soda	Cornflour
Appearance	white	white	white	white
Texture	large grans	medium grans.	small grans.	very small
Smell	lemon	like the sea	nothing	nothing
Iodine	obzobing and gets darker.	it goes more yellow and does	makes it hard and absorbs it.	sits on the top
Water	melt	sits	melts	absorbs
Vinegar	melt	absorbs	bubbles	sits

Write a paragraph about your findings.

All the appearance were white powders. The sugar had large grains. The salt was medium grains. The baking soda has small grains And the cornflour had very small grains. All of the white powders smell like nothing. The Iodine made the powders change colour and to go hard. The water made the powders melt and sit for all of them.  finally, the vinegar did lots of things, it made them melt, absorb, bubbles and sits on the top.