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Related Flashcards
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Cards In This Set
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What is energy
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The capacity to do work or transfer heat
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What is the equation for kinetic energy
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Ekinetic = 1/2mu^2 where m is the mass in kilograms and u is the velocity
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What is thermal energy?
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Energy associated with random motion of atoms and molecules
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What is potential energy
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The energy associated with an object by virtue of its position
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What is chemical energy
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Energy stored within the structural units of chemical substances
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What is electrostatic energy and what is its equation?
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Potential energy that results from the interaction of charged particles. Q1Q2/d where Q1 and Q2 are the product of the 2 charges and d is the distance between them.
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How do you know if E(electrostatic) is positive or negative? What are the implications of a positive/negative value?
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Is Q1 and Q2 are opposite charges, E(electrostatic) is negative. if Q1 and Q2 are like charges, E(electrostatic) is positive. negative values indicate attraction, while positive values indicate repulsion.
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What is the system
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The specific part of the universe that is of interest to us
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What is the surroundings
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The rest of the universe outside the system
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What is heat
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The transfer of thermal energy
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What is exothermic
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Any process that gives off heat/transfers energy from the system to the surroundings
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What is endothermic
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Any chemical reaction in which heat/energy must be supplied to the system from the surroundings in order for the reaction to take place
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In endothermic and exothermic reactions, are the products or the reactants higher in energy?
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Exothermic: products have a lower energy than the reactants
endothermic: products have a higher energy than the reactants |
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What is the SI unit for energy
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The Joule
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How many grams are in 1 amu?
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1.661 x 10^-24 g
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