Card Set Information

2010-04-13 10:29:23

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  1. temprature
    a measure of the average kinetic energy of all the particles within an object
  2. thermometer
    a device that measures temprature
  3. absolute zero
    the temprature at which an objects energy is minimal
  4. heat
    the transfer of energy from the particles of one objectto those of another object due to a temprature difference between the two objects
  5. conduction
    the transfer of energy a heat between particles as they collide within a substance or between two objects in contact
  6. convection
    the transfer of energy by the movement of fluids with different tempratures
  7. convection current
    the flow of a fluid do to heated expansion followed by cooling and contraction
  8. radiation
    the transfer of energy by electromagnetic waves
  9. conductor
    a material through which energy can be easily transferred as heat
  10. insulator
    a material that is a poor energy conductor
  11. specific heat
    the amount of energy transferred as heat that will raise the temprature of 1kg of a substance by 1k
  12. heating system
    any device or process that transfers energy to a substance to raise the temprature of the substance
  13. cooling system
    a device that transfers energy as heat out of an object to lower its temprature
  14. refrigerant
    a substance that used in coolong systems that transfers large amounts of energy as it changes state
  15. reactant
    a substance that undergoes a chemical change
  16. product
    a substance that is the result of a chemical change
  17. chemical energy
    the energy stored within atoms amd molecules that can be released when a substance reacts
  18. exothermic reaction
    a reaction that transfers energy from the reactants to the surroundings usually as heat
  19. endothermic reaction
    a eaction in which energy is transferred to the reactants usually as heat from the surroundings
  20. synthesis reaction
    a reaction of at least two substances that forms a new, more complex compound
  21. decomposition reaction
    a reaction in which one compound breaks into at least two products
  22. electrolysis
    the decomposition of a compound by an electric current
  23. combustion reaction
    a reaction in which a compound and oxygen burn
  24. single-displacement reaction
    a reaction in which atoms of one element take the place of atoms of another element in a compound
  25. double-displacement reaction
    a reaction in which a gas, a solid precipitate, or a molecular compound is formed from the apparent exchange of ions between two compounds
  26. reduction/oxidation (redox) reaction
    a reaction that occurs when electrons are transferred from one reactant to another
  27. radicals
    the fragments of molecules that have at least one electron available for bonding
  28. chemical equation
    an equation that uses chemical formulas and symbols to show the reactants and products in a chemical reaction
  29. catalyst
    a substance that changes the rate of chemical reactions without being consumed
  30. enzyme
    a protein that speeds up a specific biochemical reaction
  31. substrate
    the specific substance affected by an enzyme
  32. equilibrium
    the state in which a chemical reaction and its reverse occur at the same time and at the same rate