Module 1f

Module 1f - Heat vs. Temp Heat is the amount of energy that...

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Common Chemical Measurements SI vs. English Inch = 2.54 cm Liter 1 L = 1000cm3 Density = Mass/volume Energy is conserved – changes type: chemical kinetic electrical heat potential radiant Einstein found a loophole for conversion of mass to energy E=mc2 Energy in motion Energy can neither be created nor destroyed Kinetic energy derived from motion Potential energy represents stored energy e.g. gasoline in a car fuel tank Motion of atoms and molecules counts In terms of temp the higher the temp the faster the motion
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Unformatted text preview: Heat vs. Temp Heat is the amount of energy that flows from a hot object to a cooler object Temp is a measure of microscopic motion Temperature scales 100C = 373K Liquid water in equilibrium with steam 0C = 273K liquid water in equilibrium with ice Absolute zero nothing colder Temperature conversions K= c + 273 K 273 = C Although the SI unit of hear is a joule, chemists like to use calorie 1 cal = 4.184 J Dietary calorie is actually a kilocalorie...
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