mystery white powder

Today you will be a Forensic Chemist. 

A bag of white powder has been confiscated by the 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. 

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

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

Materials

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Steps

1. get cardboard
2. get 4 powders and put them on the cardboard
3.get three liquids and put them on the powders
4. see what happens
5. 
6. the result

Findings:

its baking soda

	Sugar	Salt	Baking Soda	Cornflour
Appearance	white	white	white	white
Texture	small	small	medium	large
Smell	no smell	no smell	no smell	tangy smell
Iodine	turned brown	turned brown	turned brown	rolled off
Water	turns grey	turns gray	turns grey	rolled off
Vinegar	turns gray	turned gray	bubbled	rolls off

Write a paragraph about your findings.