0
Why did each of the solutions turn iodine blueblack at the start of the experiments?
Wiki User
∙ 15y ago
Iodine is famous for testing of the presence of starch. I would assume starch is present in the solution, therefore iodine would turn blue. Originally, the colour of iodine solution is brown.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Is Iodine hexafluoride an ionic or molecular compound?
It is Molecular Compound. You can tell because it starts with a nonmetal and molecular compounds typically start with nonmetals.
What happens when you burn an iodine crystal?
when iodine crysatals are heated, they turn from a solid into a gas (vapour). They start a black colour and as they gradually turn into a gas, they turn to a purple colour. At the end, there are no crystals left.
What is the Halogen Triad?
This refers to an old "history of science " topic around the work done prior to mendeleevs on periodic table. Elements were put in triads with similar properties. The halogen triad was chlorine, bromine and iodine. Pretty useless idea long term but a good start for people who came later.
Discuss the depleting fossil fuel reserve and potential solutions to this problem?
Fossil fuel is deplating fast and the only soulutions i see is to stop driving and to walk or ride a bike. We also could all buy electric cars. We might even all start car pooling everywhere we go or to catch the bus and or cab.
What elements does not occur as a diatomic molecule?
Many elements do not exist as diatomic molecules. Metals, like iron, copper, silver, lead, etc. Even some nonmetals, helium, argon, sulfur, etc. Only a few do exist as diatomic molecules, hydrogen, oxygen, nitrogen, chlorine, fluorine, bromine, and maybe astatine.
When did people start doing proper experiments?
since they did
How do you make a vitamin c indicator?
Iodine makes a good indicator. The iodine will blend into the surrounding color. Once their is no more vitamin c then the iodine will start to chemically combine with any starches
What items in the bathroom start with the letter i?
Items found in the bathroom include Ivory soap and iodine.
Where to send ideas for experiments about time travels?
You might start by making some simple experiments on your own, to confirm or disprove your assumptions.
What is the motto of Environmental Waste Solutions?
The motto of Environmental Waste Solutions is 'Start a green business, today.'.
What element starts with a I?
The elements that start with the letter "I" are Indium (In), Iodine, (I), Iridium (Ir), and Iron (Fe).
What di i eat to cure i had a goiter?
a lack of iodine is the most common cause. salt in almost all 1st world countries is fortified with iodine, so start putting salt on your food.
What are some fun science experiments to do with children?
Simple experiments to do with children can start with static electricity. Such as rubbing a balloon on hair and seeing the hair stand on end and seeing the balloon stick to an object.
When did fracking start?
In the late 1940 Standard Oil began early experiments with Fracking in Oklahoma and Texas.
What happens if you add iodine drops to a non-starch?
If you add iodine to starch the start will turn to a dark color blue/blk because of the enzyne Amylase (in starch), so if it is non starch there will not be a reaction and it will be clear.
What Household items that start with the letter i?
Ivory Soap and iodine are items found in a house. They begin with the letter i.
How do you make a 3-d iodine atom model?
To makea model of iodine you'll need lots of spheres the same size. Join them together in pairs to represent the iodine molecule I2. The bond you are making here is a covalent bond and won't break if your iodine becomes a gas. You need a whole collection of iodine molecules and sit them down together as close as you can get them to represent solid iodine. The forces holding them together are an example of van der Waals forces. These forces are strong enough to make iodine be a solid at room temperature.... but if you give them some energy by shaking your model, they should start to leap about as you solid iodine becomes a gas. This change is called sublimation.
