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Why does the solid iodine only stick to fingerprints when its heated?
Wiki User
∙ 13y ago
because the iodine needs to make contact with the fingerprint so when it's a solid it can't do that. However when it is heated it turns in to gas (sublimation) it rises up and as it make contact with a coooler surface (the fingerprint) it crystallizes and makes it visable.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoFingerprints often leave residues of oils in the shape of the friction ridges. Iodine, and many other fingerprinting materials such as chalk, graphite, charcoal, aluminum powder and calcium oxide stick to these residues.
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Why does solid iodine only stick to fingerprints when they are heated?
because when they are heated they are sticky and they only fix to fingers
Why can gas iodine stick to fingerprints?
The gas iodine will stick to the fingerprints because they will crystallize when they come into contact with a cool surface. When heated, iodine directly changes into vapor.
Why doesn't solid iodine stick to finger prints?
solid iodine does not stick to fingerprints because it is a solid however when it is transferred into a gas it is
Why does solid iodine not stick to fingerprint when heated?
that is because of iodine is solid and when it heated it mulicules moves faster after that your finger prints will not be seen and even did not stick from:bloodboilz_15@yahoo.com pake add me
Explain why the solid iodine did not stick to the finger prints but it could when it was heated?
because it was a solid particle and it turned in to a liquid form when heated.
Why does solid iodine not stick to fingerprints?
iodine is a covalent compound and no ionic properties. there are no free electrons on it. so it can not conduct electricity.
Why are fingerprints left on things you touch?
The oils and dirt on your skin stick to items that you touch. This causes fingerprints to form on most items.
Is a glue stick a solid liquid or gas?
A glue stick is a solid .
Why is tar heated and not cooled before applied to a roof?
Tar is heated so it can stick to what ever it is going on. If it was cooled it would not stick right.
Is iodine in lady speed stick gel?
No. The active ingredient in Lady Speed Stick gel is Aluminum.
Why does your ferret stick out his tong?
because is over heated
Does cocoa powder stick to fingerprints?
Yes. It may be used in order to make a fingerprint more visible.
