CHE 2A- Final Exam Guide - Comprehensive Notes for the exam ( 27 pages long!)
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CHE 2A Full Course Notes
Verified Note
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Che 2a - lecture #1 - atoms & molecules. Synthesize medicines, increase crop yields, & synthesize new building materials. Chemical waste, acid rain, global warming, & diseases. The design of chemical products & processes that decrease or sometimes eliminate the use or creation of hazardous substances. Total mass of reactants = total mass of products. All samples of a given chemical compound have the same elemental composition by mass. When two elements combine to form more than one compound, the weights of one element that combine with a fixed weight of the other, are in a ratio of small whole numbers. Ex: 1. 0g hydrogen + 8. 0g oxygen = water. Mass of nucleus is almost 100% of the atom because it is so incredibly dense. Che 2a - lecture #2 - counting and weighing atoms and molecules. Elements are organized into the periodic table into vertical columns of groups and horizontal rows called periods.
