Chapter 1 - Chemistry 8/30/06 Vocabulary Science attempt to...

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Chemistry 8/30/06 Vocabulary Science – attempt to organize and understand our observations of nature; the systematic study of matter and its surrounding Chemisty – branch of science that studies the properties and interactions of matter’ the study of changes in matter Hypothesis – a testable guess; a proposed general principal Theory – unifying principle that explains a collection of facts Physical Property – observable property of a substance (color, texture, density) Chemical Property – property that has to do with a substance’s potential to change its chemical make-up Atom – fundamental unit of a chemical substance Molecule 0 combination of two or more atoms held together by attractive forces Element – substance that contains only one type of atom Compound – combination of two or more different atoms held together by attractive forces Chemical Formula – notation of the type and number of each element present in one unit of the substance Metals – elements which exhibit metallic properties such as solidity at room temperature, good conduction of electricity, and can be pounded into shapes (left side of table) Metalloids – elements which exhibit some metallic and some non-metallic characteristics there are 6 metalloids (border the ‘staircase’) Non-metals – elements which do not exhibit metallic properties (right side of staircase)
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This note was uploaded on 04/12/2008 for the course CHE 103 taught by Professor Moran during the Fall '07 term at West Chester.

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Chapter 1 - Chemistry 8/30/06 Vocabulary Science attempt to...

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