Final answer:
In the diffusion of starch test, a characteristic blue-violet color is observed when iodine solution is added to a starch solution, indicating the presence of starch due to the formation of an amylose-iodine complex. Safety measures including wearing goggles are emphasized during laboratory tests. This test is part of identifying carbohydrates in starches.
Step-by-step explanation:
The final conditions of the diffusion of starch test in a laboratory setup, known as Test 1, would involve the observation of color changes due to a reaction between starch and iodine. Initially, when the iodine solution is added to the starch solution in a test tube, a characteristic blue-violet color will develop indicating the presence of starch. This color change results from the formation of an amylose-iodine complex, where the iodine fits into the coiled structure of amylose, a linear polymer that comprises part of starch along with amylopectin.
During this experiment, it's important to adhere to safety protocols, such as wearing goggles when handling the chemicals and using safe lab techniques when heating substances. The result recorded, typically the color change mentioned, is an integral part of identifying carbohydrates in the starches test. If you perform a similar test for glucose by heating the sugar solution with Benedict's solution, you might observe color changes to green, yellow, or brick-red, depending on the amount of glucose present.