Dottoressa Di Filosofia

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Chapter 1: Matter and Energy
Spring 2013



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.

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 What are the macroscopic properties of each?  How do the atoms and molecules of solids, liquids, and gases behave differently?


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]


Chem 100 Spring 2014

Symbols used in Chemistry


 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


Chem 100 Spring 2014

 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)


Chem 100 Spring 2014

 Volume:
 amount of space a substance occupies  can be calculated by measuring the sides of a cube or rectangular side, then multiplying them


Volume = length  width 

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