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
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.
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. cardboard
2. sugar
3. salt
4. cornflower
5. baking soda
6. pen
7. magnifying glass
Steps
1. Get a piece of card
2. spilt it into four groups
3.put all four ingredients on card
4. Look at with magnifying glass
5. experiment with
6. DONE!
Sugar
|
Salt
|
Baking Soda
|
Cornflour
| |
Appearance
| grains | grains | bits | bits |
Texture
| block | blocks | soft | soft |
Smell
| sweet | gross | disgusting | noting |
Iodine
| turned brown and speared | turned brown and spread | went solid | turned purple |
Water
| wet | wet | soggy | gross |
Vinegar
| wet | wet | fizzed | dissolved |
Write a paragraph about your findings. when you put water in the baking soda got soggy but vinegar did different reaction vinegar fizzed up but when you sugar it would to same thing.But it was different for cornflour for water it went gross then for vinegar it dissolved.
Making Sherbet
Once you have completed your blog and cleaned up all your equipment you can make sherbet.
Using the following recipe you can make sherbet.
Sherbet recipe
Recipe:
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. baking soda
2. powdered drink
3. citric acid
4. icing sugar
Steps
1.Get snap bag lock the bag
2. add citric acid
3. add icing sugar
4. add crystals
5. add baking soda
6. SHAKE!
Findings:I found that the sherbet had wired taste but fizzed in your mouth
Sherbet
| |
Taste
| weird |
Colour
| red |
Kia ora Saia
ReplyDeleteThis looks really great! You have worked hard on this write up. Under the chart for the white powders it asks you to write up about your findings in a paragraph. Please add this in so you can earn your science badge point!
- Miss Birtch