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General chemistry WebCT exam/quiz questions. The Atoms, Molecules, and Ions topic covers the basics of the composition of atoms, including subatomic particles, elements, allotropes, and isotopes. Periodic placement and...
This Lunar and Planetary Science article provides information about cryptoendolithic life (microbes living within rocks on the Earth's surface) in Antarctic sandstones. The purpose of the study was to use chemical and...
This case study examines the carbon cycle: from carbon becoming carbon dioxide, to carbohydrate, to animals, then back to carbon dioxide again. Chemistry topics like atomic structures, carbon isotopes, radiocarbon...
This National Institute of Standards and Technology (NIST)) site contains atomic spectroscopic reference data. Information can be accessed through a variety of means, such as an interactive periodic table and dropdown...
This teacher's guide with exercises is intended to help teach the topics of radioactive decay and its use to determine age. It identifies four main concepts that students are likely to struggle with: spontaneity...
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