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Why did each of the solutions turn iodine blue black at the start of the experiment?
The solutions turned iodine blue-black at the start of the experiment due to the formation of a complex between iodine and starch. Iodine interacts with the helical structure of starch molecules, resulting in a color change that indicates the presence of starch in the solution. This reaction is a classic test for starch, demonstrating its presence through the formation of the blue-black complex.
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What happens if you add iodine drops to a non-starch?
If you add iodine drops to a non-starch substance, such as sugar or protein, there will be no color change. Iodine is used to detect the presence of starch by turning blue-black in the presence of starch molecules. Non-starch substances will not produce this color change.
What group of halogens on the periodic table what letter do they start with?
Halogens belong to group 17. The elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At).
How does a hypothesis start?
A hypothesis typically starts with posing a question or making an educated guess about the relationship between variables. It is a testable statement that predicts the outcome of an experiment or research study.
When did black Friday start?
Black Friday originated in the United States in the early 20th century, but the exact beginnings are unclear. It became more widely recognized as the unofficial start of the holiday shopping season in the 1950s and has since evolved into a major retail event with significant discounts and promotions offered by retailers.
Did black Saturday start in 2009?
Yes. The Black Saturday fires began on 7 February 2009, and continued for almost five weeks.
Why did each of the solutions turn iodine blueblack at the start of the experiments?
The presence of starch in the solutions caused them to turn iodine blue-black at the start of the experiments. Iodine forms a dark blue-black complex when it interacts with starch molecules, making it a commonly used indicator to detect the presence of starch in solutions.
The first step of an experiment is called?
Any experiment should start with a hypothesis.
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.
What happens if you add iodine drops to a non-starch?
If you add iodine drops to a non-starch substance, such as sugar or protein, there will be no color change. Iodine is used to detect the presence of starch by turning blue-black in the presence of starch molecules. Non-starch substances will not produce this color change.
What is the difference between experiment and hypothesis?
An experiment is the thing that you perform, and a hypothesis is the guess you make at the start (before the experiment) to determin what's going to happen.
What is initial temperature mean?
It is the temperature at the start of the experiment.
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).
How do you make a pure sample of Iodine?
To make a pure sample of iodine, you can start with a mixture containing iodine and other substances, then use a process like sublimation to separate the iodine from the other components. Sublimation involves heating the mixture to allow the iodine to vaporize and then cooling it to condense the iodine back into solid form. This process helps to obtain a pure sample of iodine.
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.
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.
