Introduction
This unit begins with the study of the chemistry of the oceans. Here we revisit water as a solvent to many ionic compounds and also to molecular gases. We look closely at corrosion processes as redox reactions and try to make sense of how the conditions in the sea affect corrosion. This leads us to discuss how ancient artifacts can be chemically treated and conditioned to preserve them and keep them from deteriorating further once they have been removed from their watery graves. Links
Introduction
This unit begins with the study of the chemistry of the oceans. Here we revisit water as a solvent to many ionic compounds and also to molecular gases. We look closely at corrosion processes as redox reactions and try to make sense of how the conditions in the sea affect corrosion. This leads us to discuss how ancient artifacts can be chemically treated and conditioned to preserve them and keep them from deteriorating further once they have been removed from their watery graves.
Links
Chemistry of corrosion
Redox reactions and Electrochemistry
Conservation of artefacts
SS Xantho restoration
Jeopardy - The History of Electrochemistry
Resources
steels as alloys animation
Videos
DiscoveryEducation - Electrolysis video (comparing electrochemical cells with electrolytic cells)
More electrolysis;
http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/ions/electrolysisact.shtml
Electrolysis of molten salts
Electroplating of silver;
http://dl.clackamas.cc.or.us/ch105-09/electrop.htm
Focus Idea #4
An introductory lecture
Nuts & Bolts of Fishing & Boating
Animation showing the flow of electrons
Rusticle - Titanic
Titanic - inside the cabins and hallways
Explain why this works!?
Rust removing by electrolysis
Tarnish - silver sulfide
HMS Pandora