Chapter 2 - Energy From Fuels Flashcards
chemical reaction
occur when particles collide and are rearranged to form new particles
chemical energy
stored in bonds between atoms and molecules.
sum of chemical potential energy and kinetic energy
law of conservation of energy
energy cannot be created or destroyed
system
chemical reaction
surroundings
everything else.
walls of container, water in solution
chemiluminescence
light emitted by a chemical reaction that doesn’t produce significant amounts of heat.
e.g. glow sticks
chemiluminescent
emitting light as a result of a chemical reaction
bioluminescence
light emitted by a chemical reaction within a living organism.
e.g. glow worms
exothermic
reaction releases energy into surroundings.
total energy of products less than reactants.
heat given off
endothermic
reaction absorbs energy from surroundings.
total energy of products greater than reactants.
require constant input of energy
heat of reaction / enthalpy change
difference in the total enthalpy of the products and the total enthalpy of reactants
activation energy
minimum energy required to break bonds of reactants for a reaction to occur
oxidation reaction
combustion reaction where a reactant combines with oxygen to produce oxides
complete combustion
oxygen is plentiful with carbon dioxide and water as the only products
incomplete combustion
oxygen is limited with carbon monoxide and water as the products
