Ch. 8 - Solids, Liquids, & Gases

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Presentation transcript:

Ch. 8 - Solids, Liquids, & Gases MATTER Ch. 8 - Solids, Liquids, & Gases III. Behavior of Gases (p.228-231) Pressure Boyle’s Law Charles’ Law

A. Pressure Which shoes create the most pressure?

A. Pressure Key Units at Sea Level 101.325 kPa (kilopascal) 1 atm 760 mm Hg 14.7 psi

A. Pressure Barometer Manometer Atmospheric Pressure Contained Pressure

A. Pressure Effect on Boiling Point When atmospheric pressure increases, the boiling point of a liquid increases. EX: high altitude cooking, boiling cold water

B. Boyle’s Law When the volume of a gas decreases, its pressure increases (at constant temp). PV = k P V INVERSE

B. Boyle’s Law

C. Charles’ Law When the temperature of a gas increases, its volume also increases (at constant pressure). V T DIRECT

C. Charles’ Law

C. Charles’ Law -273°C or 0 K Absolute Zero - Temp at which... the volume of a gas would equal zero. all particle motion would stop. -273°C or 0 K