Forensics Summary

Answer the following questions in your books:

1. Explain what happens to particles during diffusion. - http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/behaviour_of_matter/revise4.shtml
2. Name one gas that could have poisoned the gaurd.  Where does this gas come from? - http://www.netdoctor.co.uk/health_advice/facts/carbonmonoxide.htm
3. What was chloroform used for by Doctors and Dentists? - http://www.chloroform.co.uk/
4. What does insoluble mean? - http://chemistry.about.com/od/chemistryglossary/a/insolubledef.htm
5. List 2 things that influence how fast things diffuse - http://www.austincc.edu/~emeyerth/diffuse2.htm

Extension: What does the iodine do before it sticks to the fingerprint? - http://sciencefair.math.iit.edu/projects/fingerprints/

Try these once you're finished - http://www.sheppardsoftware.com/Elementsgames.htm ,
http://www.creative-chemistry.org.uk/ , http://investigation.discovery.com/interactives/fingerprint-memory/easy.html , http://www.nist.gov/public_affairs/licweb/suspect.htm ,