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

Materials

1.  Salt
2.  Sugar
3.  Cornflour
4.  Baking Soda
5.  Pipette
6.   Magnifying glass
7.  Paper
8. Pen

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	the iodine as turn the sugar dark brown.	the salt has obscured the iodine.	NO REACTION	Cornflour is all clumped up
Texture	Grain feeling	Grain feeling	Smooth powder feeling	Grain feeling
Smell	gas	strong gas	chlorine	gas
Iodine	Obscured the sugar	turned grainy	NO REATION	grainy
Water	obscured the sugar	NO REATION	Obscured the baking soda	make ublick
Vinegar	it crystallised  the sugar	obscured the salt	fizzed up	Clumpy

Write a paragraph about your findings.

Most of the item crystallised  and also went grainy.
Some of the had no reaction.
The water and the vinegar also the iodine crystallised the sugar.

The water and the vinegar also the iodine made the salt grainy.

The water and the vinegar also the iodine made the baking soda had hardly any reaction except the vinegar fizzed it up.

The water and the vinegar also the iodine made the cornflour clumpy.

Making Sherbet

Using the following recipe you need to make sherbet.

Sherbet recipe

Recipe: 

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

Materials:

1.  Tactic acid

2.  citrus acid 

3.  icing sugar

4.  spoon

5.  raro
6. zip lock bag

Findings:
It fizzs up in your mouth. 
The baking soda makes it fizz up more.
Then citris acid makes it sour.
the raro and the icing sugar sweet.

Sherbet
Taste	like candy floss
Colour	light pink