chem chap. 1 - Neutronsmost massiveNUCLEUS Protonmiddle...

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Chapter 1 Chemistry—the study of the composition, structure, and properties of matter and the changes it undergoes Branches of Chemistry • Organic Chemistry—the study of most CARBON containing compounds • Inorganic Chemistry—the study of all substances not classified as organic…NO CARBON • Physical Matter—the study of the properties of matter in relation to their energy • Chemical—any substance with a definite composition Important Key Terms • Mass—a measure of the amount of matter • Volume—the amount of 3-D space an object occupies • Matter—anything that has mass and takes up space • Compound—a substance that is made from the atoms of 2 or more elements that are chemically bonded • Mixture—a blend of 2 or more kinds of matter. Each retains its own identity and property • Solubility—ability to dissolve something temperature dependant Building Blocks of Matter • Atom—the smallest unit of an element that maintains the properties of the element • Element—pure substance made of only one kind of atom
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Unformatted text preview: Neutronsmost massiveNUCLEUS Protonmiddle massiveNUCLEUS Electronsleast massiveOUTSIDE OF NUCLEUS Cations: Positive IONS o Lose Electrons Anions: negative IONS o Gain Electrons Properties and Changes in Matter Extensive Propertiesdepend on the amount of matter that is present Intensive Propertiesdo not depend on the amount of matter present Attractive Forces Solidsgreatest attractive forces Liquidcan slide past each other Gasesattractive forces are the lowest Symbols Atomic # = # protons in nucleus Atomic Mass Atomic # = # of Neutrons Atomic Mass = Protons + Neutrons # Protons = # Electrons Periodic Table Vertical ColumnsGROUPS Horizontal RowsPERIODS Group 17HALOGENmost reactive non metals Group 1ALKALIreactive metals Noble Gases Elements in Group 18 (Gases at room temperature) Un-reactive Stable...
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This note was uploaded on 02/25/2012 for the course CHEM 2142 taught by Professor Roberts during the Fall '10 term at Texas State.

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chem chap. 1 - Neutronsmost massiveNUCLEUS Protonmiddle...

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