Question

Describe the initial conditions of the diffusion of starch test (Test 1)

Answer 1

The initial conditions of the diffusion of the starch test involve adding starch solution to a test tube and adding iodine solution to detect the presence of starch.

Step-by-step explanation:

The initial conditions of the diffusion of the starch test (Test 1) involve adding 2 milliliters of starch solution into a test tube. Then, a few drops of iodine solution are added to the test tube. The results are recorded on a table. This test is used to detect the presence of starch in a solution, as the characteristic blue-violet color that appears when starch is treated with iodine is due to the formation of the amylose-iodine complex.

Answer 2

The initial conditions of the diffusion of starch test (Test 1) involve placing a starch solution in a dialysis bag immersed in water.

Step-by-step explanation:

In the initial conditions of the diffusion of starch test, a starch solution is typically placed inside a semipermeable dialysis bag. The dialysis bag is then submerged in water. At this stage, the starch molecules are present only within the dialysis bag, and the water outside the bag is free of starch. The semipermeable membrane of the dialysis bag allows the passage of water molecules but restricts the movement of larger molecules like starch.

This experimental setup is designed to observe the process of diffusion, where solute molecules (starch) move from an area of higher concentration (inside the bag) to an area of lower concentration (outside the bag) through the semipermeable membrane. As the test progresses, the diffusion of starch into the surrounding water can be monitored and analyzed.