White Powder Test

White Powder Test

Aim: To demonstrate how different powders feel, look and react to other substances.

Equipment:

Baking Soda

Cornflour

Sugar

Salt

Iodine

Vinigar

Magnifying Glass

Eyedrop

Black card

Teaspoon/Stick

Method: 

1. Place one-fourth teaspoon (1 ml) of the four white powders on a sheet of black construction paper. Label the powders with your pen.
2. Study the powders with the magnifying glass. Examine what each powder looks like. How would you describe the powder's shape. Does it have large or small grains? Your observations should be written in the appearance column of the chart.
3. Examine the powders further by rubbing each powder between your fingers. Describe how each powder feels in the Texture column of the chart.
4. Determine if there is a smell to any of the powders. Record your findings in the Smell column of the chart.
5. Take the eyedropper and place a drop of water on each individual powder. Examine what happens? Do the powders dissolve? Is there a reaction? Write your observations in the Reaction to Water column.
6. Place one-half teaspoon (2ml) of each powder in a separate jar. Add 2 drops of iodine to each jar using the eyedropper. Record what happens in the Reaction to Iodine column. Iodine should b

	Mixing Iodine into white powders
A	Baking Soda turns a light yellow/orange and liqudy
B	Cornflour turns black and turn into a hard texture known as oobleck
C	Salt turns brownish orange absorbing and into a think grainy texture
D	Sugar same look as salt but dissolves more into the liquid

When the powders where analysed they were found to have different properties Powder D had the largest granuals and powder B turned a hard sticky gooey texture and none of them had scents or smell