Joey Creus - Academia.edu (original) (raw)
I'm not the real author, I just share my Reviewers. So Credits to the Owner(s).
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Waves-any disturbance that propagates and transfers energy from one region to another Types of wa... more Waves-any disturbance that propagates and transfers energy from one region to another Types of waves: 1. Mechanical waves-require a medium in order to propagate a. Transverse waves-the oscillations are perpendicular to the direction in which the wave travels Example: Waves on a string Parts of a transverse wave: Crest-highest point in a wave Trough-lowest point in a wave b. Longitudinal waves-the oscillations are parallel to or along the line of travel. Composed of compressions and rarefactions Example: Sound waves Parts of a longitudinal wave: Compression-a region in a longitudinal wave where the particles are closest together Rarefaction-a region in a longitudinal wave where the particles are furthest apart Periodic motion-the motion of the medium is periodic with the frequency (f) and period (T) Frequency (f)-number of cycles per second; measured in Hertz (Hz) Period (T)-time needed to complete one cycle amplitude (A)-maximum displacement of a particle in the medium relative to the equilibrium level wavelength (λ)-the distance over which the wave pattern repeats or distance between two adjacent peaks wave velocity (v)-the rate at which one wavelength travels over a period of time
Chemical Equilibrium-the process where opposing reactions occur simultaneously at the same rate S... more Chemical Equilibrium-the process where opposing reactions occur simultaneously at the same rate Static/Mechanical/State Equilibrium-exists when the given system is not changing in motion-when balances forces act on an object Dynamic Equilibrium-when opposing states occur at the same rate and no overall change occurs Thermal Equilibrium-occurs when heat is transferred from higher temperature to a lower temperature Chemical Equilibrium-a system that satisfies conditions such as the rate of the product formed is equal to the rate of reverse reaction Microscopically Dynamic-no observable changes can be seen in a system in equilibrium even though constant formation and dissolution occur How do we know if a system already achieved equilibrium? • If chemical reactions are still proceeding • Color change, gas formation, precipitate formation, and change in the temperature of the system indicate that chemical reactions are still proceeding REVERSIBLE REACTIONS Claude Louis Berthollet-a French chemist who first discovered the concept of reversible reaction Complete Reaction-a reaction where no reactants remain in the mixture and the reverse reaction does not occur Reversible Reaction-a reaction that proceeds but not completely EQUILIBRIUM-CONSTANT EXPRESSION Law of Mass Action-this law states that the composition of a reaction mixture can vary according to the quantities of components that are present Cato Maximilian Guldberg and Peter Waage-they proposed the law of mass action Heterogenous reaction-equilibrium reactions involving components in more than one phase Homogenous reaction-all components in the same phase
Waves-any disturbance that propagates and transfers energy from one region to another Types of wa... more Waves-any disturbance that propagates and transfers energy from one region to another Types of waves: 1. Mechanical waves-require a medium in order to propagate a. Transverse waves-the oscillations are perpendicular to the direction in which the wave travels Example: Waves on a string Parts of a transverse wave: Crest-highest point in a wave Trough-lowest point in a wave b. Longitudinal waves-the oscillations are parallel to or along the line of travel. Composed of compressions and rarefactions Example: Sound waves Parts of a longitudinal wave: Compression-a region in a longitudinal wave where the particles are closest together Rarefaction-a region in a longitudinal wave where the particles are furthest apart Periodic motion-the motion of the medium is periodic with the frequency (f) and period (T) Frequency (f)-number of cycles per second; measured in Hertz (Hz) Period (T)-time needed to complete one cycle amplitude (A)-maximum displacement of a particle in the medium relative to the equilibrium level wavelength (λ)-the distance over which the wave pattern repeats or distance between two adjacent peaks wave velocity (v)-the rate at which one wavelength travels over a period of time
Chemical Equilibrium-the process where opposing reactions occur simultaneously at the same rate S... more Chemical Equilibrium-the process where opposing reactions occur simultaneously at the same rate Static/Mechanical/State Equilibrium-exists when the given system is not changing in motion-when balances forces act on an object Dynamic Equilibrium-when opposing states occur at the same rate and no overall change occurs Thermal Equilibrium-occurs when heat is transferred from higher temperature to a lower temperature Chemical Equilibrium-a system that satisfies conditions such as the rate of the product formed is equal to the rate of reverse reaction Microscopically Dynamic-no observable changes can be seen in a system in equilibrium even though constant formation and dissolution occur How do we know if a system already achieved equilibrium? • If chemical reactions are still proceeding • Color change, gas formation, precipitate formation, and change in the temperature of the system indicate that chemical reactions are still proceeding REVERSIBLE REACTIONS Claude Louis Berthollet-a French chemist who first discovered the concept of reversible reaction Complete Reaction-a reaction where no reactants remain in the mixture and the reverse reaction does not occur Reversible Reaction-a reaction that proceeds but not completely EQUILIBRIUM-CONSTANT EXPRESSION Law of Mass Action-this law states that the composition of a reaction mixture can vary according to the quantities of components that are present Cato Maximilian Guldberg and Peter Waage-they proposed the law of mass action Heterogenous reaction-equilibrium reactions involving components in more than one phase Homogenous reaction-all components in the same phase