CHEM 1420 Chapter Notes - Chapter 1: Stoichiometry, Significant Figures, Chemical Substance
30 Oct 2014
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Chapter 1: doing science: a general chemistry course designed for both arts and science and engineering. Chapter 1: doing science test hypothesis (the web comic xkcd www. xkcd. com) Matter: occupies space and has mass: for course syllabus, lecture slides, old tests, other information, and grades: 151 students: https://toolkit. itc. virginia. edu/2008_fall_chem151-3: for mastering chemistry homework (everyone): http://www. masteringchemistry. com. Review sessions: monday and tuesday evenings, 6:00 to 7:00 p. m. , room 402 (chemistry auditorium) A pure chemical substance is a material that can not be separated by physical means into two or more materials with different properties. An element can not be decomposed into two or more simpler substances by any chemical means. A compound contains two or more chemical elements combined in fixed proportions. Compounds can be separated into pure elements by chemical means. Mixtures: two or more pure chemical substances combined in varying proportions. A homogeneous mixture is one that is uniform in composition down to the molecular (or ionic) scale.
