Collision Theory Experiment
1. Temperature increasers the number of collisions. When the
temperature is increased the particles all move quicker. If
they're moving quicker, they are going to have more collisions.
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2. Concentration (or pressure) increases the number of collision. If
the solution is made more concentrated it means there are more
particles of reactants knocking about between the water molecules,
which make collisions between the important particles more likely.
In a gas, increasing the pressure means the molecules are more
squashed up together so there are going to be more collision.
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3. Size of solid particles (or surface area) increases collisions.
If one of the reactants is a solid than breaking it up into
smaller pieces will increase its surface area. This means that the
particles around it in the solution will have more area to work on
so there will be more useful collisions.
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4. Catalysts increase the number of collisions. A catalyst works by
giving the reacting particles a surface to stick to where they can
bump into each other. This obviously increases the number of
collisions too.
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Faster collisions increase the rate of reaction
High temperatures also increase the energy of the collision, because
it makes all the particles move faster.
Faster collisions are only caused by increasing the temperature.
Reactions only happen if the particles collide with enough energy. At
a higher temperature there will be more particles colliding with
enough energy to make the reaction happen. This initial energy is
known as the activation energy, and it is needed to break the initial
bonds.
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As the temperature increases, the movements of molecules also increase. This is the kinetic theory. When the temperature is increased the particles gain more energy and therefore move around faster. This gives the particles more of a chance with other particles and with more force.
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is the reason that the ball does not rebound off the block at the same
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Cars are large objects of great mass which can reach very fast velocities, this can be a dangerous combination if the physics aren’t correct. Seeing as there is over 1.2 billion cars world wide, physicians have put much detail into aspects of cars to make them as safe as possible. In the paragraphs below I will be be briefly discussing different aspects of the everyday automobile and its safety.
Reactions occur when the particles of reactants collide together continuously. If they collide with sufficient energy, then they will react. The minimum amount of kinetic energy required for particles at the time of collision is called the activation energy and this theory is known as the ?collision theory?.
This meeting between the two particles can only take place on the surface area of the material. If the surface area of the material is increased, the particles gather more space to collide with each other with force. With a large surface area, the particles will have more area to work on so the collision probability will be high. A catalyst is a separate substance to the ones you use in your experiment and is used to speed up the reaction between the reactants.
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