A chemistry class is experimenting with iodine to see which common white powder items will react and make the iodine change color. Which item listed will have a chemical reaction with iodine?
I don't see any listings!
Starch is the one you want to pick.
To determine which item listed will have a chemical reaction with iodine, we need to know the list of items provided. Please provide the list of items, and I will guide you step-by-step to determine which one will react with iodine.
To determine which item will have a chemical reaction with iodine, you need to know the chemical properties of iodine and the substances you are testing. Generally, iodine is known to react with substances that contain reducing agents or easily oxidizable compounds.
In this case, the common white powder items would need to be tested individually for their reactivity with iodine. Here is a step-by-step process to determine the item that will have a chemical reaction with iodine:
1. Take a small amount of each white powder item, for example, baking soda, salt, sugar, and cornstarch.
2. Create a test setup for each item by placing a small amount of the powder on a clean surface or in separate small containers.
3. Add a few drops of iodine solution onto the powder of the first item (e.g., baking soda) and observe any changes in color or the occurrence of a chemical reaction. For best results, make sure to use a controlled environment and consistent amounts of iodine solution.
4. Repeat the process for the remaining items (salt, sugar, cornstarch), using fresh iodine solution for each.
5. Record your observations for each item.
6. Analyze the results: If you observe a visible color change, such as the iodine turning brown or purple, or any strong reaction between the iodine and the item, it suggests a chemical reaction occurred.
Based on the results of your observations, you can determine which item had a chemical reaction with iodine. Remember, the presence of a reaction indicates the substance has properties that can react with iodine, resulting in a change in color or other noticeable changes.