0
When using iodine on a potato or corn the iodine turns black What is this evidence of?
Wiki User
∙ 12y ago
Presence of starch.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the reason paper turns black when iodine touches it?
When iodine touches starch it turns black. The paper may contain starch.
What turns blue black when stained with iodine?
Starches turn blue-black when stained with iodine (which usually stains things a reddish-brown or amber color).Iodine turns blue black when starch is present
Which white powder turns black when it touches iodine?
starch
What is iodine in the presence of when it turns black?
Starch, alpha-carbohydrate
What happen when starch add to iodine?
It turns blue-black
What do you observe when you observe a potato stained with iodine?
If the iodine on/in the potato turns dark blue/purple/black, it means the iodine has reacted to the starch in the potato and has changed color.
What result is yield when iodine place in potato juice?
When iodine is placed in potato juice it turns dark purple to black. It's the starch in potatoes that reacts with the iodine.
What happens when iodine solution turns blue-black what substance is present?
Starch is present. Check a potato with iodine.
Is it tru that iodine reacts with starch to give a red color?
No when you but iodine with sarch for example a potato the starch reacrs with the iodine and it turns black
How do you test for starch in potato extract?
Use concentrated Iodine, If parts of the potato turn blue-black, there is starch present.=Be careful - iodine is an irritant.==OBVIOUSLY, Don't eat the potato afterwards!=
What is the reason paper turns black when iodine touches it?
When iodine touches starch it turns black. The paper may contain starch.
What turns blue black when stained with iodine?
Starches turn blue-black when stained with iodine (which usually stains things a reddish-brown or amber color).Iodine turns blue black when starch is present
What is the iodine test for potato juice?
So that you can see the cells in the potato if your talking in Science terms
What happens when iodine is added to protein?
It turns black!
What is starch tested for?
Iodine solution turns blue/black
Which white powder turns black when it touches iodine?
starch
What is iodine in the presence of when it turns black?
Starch, alpha-carbohydrate
