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. 6
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.
1. Magnifying glass
2. sugar
3. salt
4. cornflower
5. baking soda
6. cardboard paper
7. pipette
8. iodine
9. water
10. Vinegar
Steps
1. make four squares on your cardboard paper
2. name each square...Sugar, cornflour, Salt and Baking soda
3. then place a teaspoon of each ingredient in the correct square
4. then separate the ingredients with a pencil but try to keep it in the square.
5. get a pipette and put some water in it and put a very little bit of water in each square
6. then get the iodine and pour a little bit of iodine in each square as well and look at the colors
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
| Changes color to brown | changes color to yellow | changes color to orange | changes color to black |
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?
Pictures of our work...
Hi Kaedun
ReplyDeleteI like this post the about powder it look's fun to do what was the powder in the end? I like how you put in some photos in the post it makes it look nice to pessent to people. was i fun to do?
Hi Kaedun, I like how you explained or told us how and what you are doing. It looks fun because I did it too and I know you loved it as same as me. I liked how you told us what kind of reaction it made to each white powder with different liquid. The reaction for each powder was interesting, well done Kaedun. Keep up the great work.
ReplyDelete