Dottoressa Di Filosofia

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Chapter 1: Matter and Energy Spring 2013 Topics 2 Chapter 1 Topics  Matter and its Classification  Physical and Chemical Changes and Properties of Matter  Energy and Energy Changes (skip)  Scientific Inquiry Chapter 1 Math Toolboxes  Scientific Notation (exponential notation)  Significant Figures  Units and Conversions Chem 100 Spring 2014 Classification of Matter  Chemistry is a branch of physical science, concerned with the study of the composition, properties and behavior of matter.  Matter is anything that occupies space and has mass.  Forms of energy are NOT matter. Heat and light, for example, do not occupy space and have no mass.  Consider the different forms of matter and energy in this picture. 3…show more content…
 What are the macroscopic properties of each?  How do the atoms and molecules of solids, liquids, and gases behave differently? 20 Chem 100 Spring 2014 Symbols used in Chemistry  Elemental symbols  are a shorthand version of an element’s longer name  can be 1-2 letters and can be derived from the Latin or Greek name [ex. Ag]  Chemical formulas  describe the composition of a compound  use the symbols for the elements in that compound [ex. H2O and CO2] 21 Chem 100 Spring 2014 Symbols used in Chemistry 22  Symbols for physical states  are found in parenthesis by the elemental symbol or chemical formula  designate the physical state [ex. solid, liquid, gas, aqueous] Chem 100 Spring 2014 Properties of Matter  A physical property is a characteristic that we can observe without changing the composition of a substance.  Examples       Color qualitative properties Odor Mass Volume quantitative properties Density Temperature 23 Chem 100 Spring 2014 Mass  A measure of the quantity of matter present  is essentially the same physical quantity as weight, with the exception that weight is bound by gravity, mass is not  common units are grams (g) 24 Chem 100 Spring 2014 Volume  Volume:  amount of space a substance occupies  can be calculated by measuring the sides of a cube or rectangular side, then multiplying them 25 Volume = length  width 

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