Hurumanu:What is that 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.

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

1. Magnifying Glass
2. Card board Paper
3. Corn flower
4. Salt
5. Baking Soda
6. Sugar
7. Lodine
8. Water
9. Vinegar

Steps

1. 
2. 
3. 
4. 
5. 
6. 
7

Findings:

Words to use: Absorbed, spread, frothed, fizzed, melted, blob,

	Sugar	Salt	Baking Soda	Cornflour
Appearance (White)	White	White	White	White
Grains (small, medium large)	medium	small	large	large
Smell (Strong, none)	none	strong	none	strong
Iodine	turned dark brown	turned light	some dark brown and some light orange	did not absorb and the lodine
Water
Vinegar

Picture of the experiment...