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Why doesn't solid iodine stick to finger prints?
Solid iodine sublimes, meaning it transitions directly from a solid to a gas without becoming a liquid. This property makes it difficult for iodine to leave residue on fingers when touched, which is why it doesn't stick to fingerprints.
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 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.
Explain why the solid iodine did not stick to the finger prints but it could when it was heated?
Solid iodine sublimes at room temperature, meaning it goes directly from a solid to a gas without melting. As a result, it does not stick to surfaces like fingerprints because it does not become liquid when in contact with the skin. When heated, the iodine turns into a gas, which can then interact with the oils and sweat in the fingerprint, making it visible.
Why does the solid iodine only stick to fingerprints when its heated?
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.
How does iodine show up the fingerprints?
dont now
Why does iodine work when using to find fingerprints?
probably because iodine sticks to the oil from your fingers
Is there a better technique than iodine to search for fingerprints?
It is simple
Is there a better substance then iodine to detect fingerprints?
no there is not a better substance
Is there a better method to finding fingerprints than iodine?
yes,yes there is
Is there a better technique to detect fingerprints other than iodine?
my head
What does iodine do to fingerprints?
It has been used as a method to develop latent fingerprints on items of evidence. The fingerprints must be photographed as their visibility does not last. Iodine has been used when the evidence must not appear to have been examined, such as mail fraud cases where the fingerprints are developed and then the mail continues on it's way to allow authorities to trap the accomplice.
