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Lecture 3

CHEM 107 Lecture 3: CHEM 107 - Lecture 3

4 Pages

Course Code
CHEM 107
Mallory Monique Mentele

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Fundamentals of Chemistry Matter Chemistry is the study of matter, its properties, the change that matter undergoes, and the energy associated with those changes. Statue of Liberty Made of copper (matter) Copper is shiny; yellowish color (property) Matter anything that has mass and takes up space Classification of Matter Matter Pure Substance Mixture Element Compound Homogenous Heterogenous Contains only one type Composed of two or of atom more different elements that are chemically combined Atoms Atoms building blocks of matter Elements Element composed of only one kind of atom; cannot be decomposed into a simpler substance Diatomic Elements Diatomic elements naturally exist as molecules of two atoms bound together Molecule two or more atoms chemically bound together Diatomic elements cannot exist with only one molecule of the element, must be a pair 7 diatomic elements: hydrogen, oxygen, nitrogen, fluorine, chlorine, bromine, iodine Compounds Compound made up of two or more different elements; connected together Molecules vs. Compounds A compound is considered a molecule if it is covalently bonded (more on this later)
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