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Friday 17 June 2011

Macbeth

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In this piece of coursework I would be focusing on the topics rate of reaction my aims in this coursework are to


• Explaining rate of reaction in details


 Rate of Reaction


 Rate of chemical change


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 Factors that effect rate of reaction


• Laws


 The rate law


 Collision theory


• Experiment


 Planning


 Obtaining


 Presentation of results


 Analysis


 Evaluation


• Conclusion


• Bibliography


Introduction


In this piece of coursework I am going to investigate rate of reaction. The rate of reaction is the time in which a reaction takes place. In order to carry out this investigation, I will need to do an experiment; I will also submit some theories and other issues to support this investigation.


Chapter.1. Speed, Velocity, and Acceleration


Kinematics -


Kinematics is a branch of science that deals with the description of motion of objects without the reference to the force or agents causing motion.


Rest and Motion -


If a body A is not changing its position with respect with a body B then it is said that A is at rest. If a body C is changing its position relative to a body D then it is considered as in motion. For instance, a cyclist detects its movement by looking at other things moving away.


Displacement -


A straight line between two points is called displacement.


(OR)


The shortest distance between two points is called displacement.


It is a scalar quantity because it does not include a particular direction.


Types of Motion -


1) Translatory Motion -


A motion of body in a straight line and in which every particle of the body is being displaced by the same amount is called translational motion.


) Rotational Motion -


When an object spins or rotates about a fixed point or axis, its motion is called rotational motion.


) Oscillatory (Vibratory) Motion -


If a mean position executed at the same intervals of time is called vibratory motion.


Speed -


Speed is distance covered per unit of time.


(OR)


The rate of change of distance moved with time.


(OR)


Speed of an object is a measure of how fast it is moving.


This is a scalar quantity.


Speed is usually measured in units of meter per second (m/s) or kilometer per hour (km/h).


We can work out speed if we know the following


1) Distance (distance traveled)


) Time (the time in which the distance is covered)


Speed (v) = distance (d) / time (t)


v = d/t


The unit for speed in SI units is meter per second or kilometer per hour (km/h).


Velocity -


The rate of change in distance moved with time in a specified direction is called velocity.


(OR)


The rate of change of displacement is called velocity.


It is a vector quantity as direction is included.


We can work it out if we know the following


1) Distance (The distance that is traveled)


) Time (The time in which the distance is covered)


v = d/t


The unit for velocity in SI units is meter per second (m/s) or kilometer per hour (km/h).


Uniform Velocity -


A body is said to move with uniform velocity if the rate of change of distance moved with time in a specified direction is constant.


Average Velocity -


Average velocity is sum of initial velocity and final velocity divided by two.





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