Science (Forensic science)

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 lives. 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.  Cornflour

2.  Sugar

3.  Baking soda

4.  salt

5.  Water

6.  Vinegar

7. Magnifier

8. cardboard paper

9.

Steps

1. Get cardboard paper and magnifier 

2. Fold the paper into four

3. write the name sugar, cornflour, baking soda, and salt in each square

4.  Put in the ingredients that you wrote

5.  Use the magnifier to look at the ingredients6. 

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	small
Smell (Strong, none)	none	strong	none	none
Iodine	absorbed	absorbed	fizzed	absorbed
Water	absorbed	absorbed	absorbed	bonce off
Vinegar	absorbed	absorbed	made baking soda big	bonce off

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

The sugar It was small like when we add the liquids it would just absorb it.

The salt was the same as the sugar but instead, the liquids would go to the bottom of the salt

The Baking Soda the liquids would stay where you put it

The cornflour the liquids would bounce off the cornflour




Do all the same experiments on the mystery white powder. What is it?
Baking soda it's because the things we did to the mystery powder happened to the baking soda that's how we figured out that it was baking soda