CHEM 181 Lecture Notes - Lecture 6: Calcium Bicarbonate, Salt, Seiko Epson

• School: McGill University
• Department: Chemistry
• Course: CHEM 181
• Professor: David Noble Harpp, Ariel Fenster, Joseph A Schwarcz

Document Summary

Galapagos islands 3. 8% of mineral/salt material. Dead sea: 32% - easy to float because of the amount of salt. Salts (sodium, potassium, magnesium, chlorine or chloride ion) Calcium (2+), magnesium (2+), sodium (1+: have electrons that can be removed, combined with negatively charged species. Dolomite: source of magnesium & calcium (pill: pill from stone, cimibar: typical of minorities can be present & toxic, contains: calcium: 158. 3mg, magnesium: 75mg, iron: 2. 81mg (small, dolomite: may contain mercury, lead, aluminum as trace elements. If small, its not always necessary to show amounts/include them in labels. Vertical column of periodic table: tend to have similar properties: e. g. fluorine, chlorine, bromine, iodine all can easily gain electrons and become a negatively charged species. Across (row): changing atomic number, boron is very different from carbon, from nitrogen, from oxygen etc. Vertical: tend to be materials, elements with somewhat similar properties.