Science 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.

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.  sugar 
2.  salt
3.  baking soda corn flour 
4.  vinegar 
5.  secret powder
6.  iodide 
7. magnifier glass 
8. 
9.

Steps

1. you put vinegar
2. you put iodide
3. and you need a magnifier glass to see whats happening

Findings:

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

	Sugar	Salt	Baking Soda	Cornflour
Appearance (White)
Grains (small, medium large)
Smell (Strong, none)
Iodine
Water
Vinegar

Write a conclusion about your findings. ( 4 plus sentences)
Use the Hexagon activity to give you some more ideas.

The sugar......
The salt.....
The Baking Soda......
The cornflour.....




Do all the same experiments on the mystery white powder. What is it?

Sherbet

Using the following recipe to make sherbet.

Recipe: 

1 tsp of powdered drink crystals (eg refresh)
1/4 tsp citric acid
1/2 tsp icing sugar
1/4 tsp -baking soda.
Put all ingredients into a zip lock bag, stir, and enjoy.

Materials:

1.  

2.  

3.  

4.  

5.  

Steps

1.
2. 
3. 
4. 
5. 
6. 

Findings:

Sherbet
Taste
Colour

Conclusion