Chemical Test for Starch
Two drops of Iodine Solution added to the food solution. If starch is present then the solution will go black/blue.
Chemical test for glucose
A few drops of Benedict's solution to the food solution. Put the solution in a tub of heated water. If the solution precipitates orange red colour then glucose is present in the food
Chemical test for Fats
Add 2cm cubed of ethanol to the food solution. shake it.
Add 2 cubed cm of water and shake again.
When fat is present the solution will turn cloudy
Chemical test for Protein
Add weak Copper Sulphate to the food solution.
Add a few drops of Sodium hydroxide to the solution.
If protein is present the solution will gradually turn purple
Test for Carbon Dioxide
The is for Carbon Dioxide is limewater. The limewater turns cloudy
The test for Water Vapour