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The first 3.5 mins is for SL but after that it is HL material.

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Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32

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Richard Thornley explains kinetics in this play list of videos on every part of the course. Choose what you want to watch!

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6.1 Describe Collision Theory [SL IB Chemistry]

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Everything you need to know about 16.2

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Everything you need to know about 16.1

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The answers are linked in the comments.

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Analysing graphs, more on catalysts and kinetic theory

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To find the information that is relevant to you, simply select a category from the top menu. This will sort the posts, showing only those within that category. By default, the landing page shows content from both elementary and secondary.

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A lab to familiarise yourselves with some techniques

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A blog post to introduce the topic
#collisiontheory #reactionrates

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Before beginning with this topic, you should review energy profile diagrams from the Energetics topic.

✏️ What is missing from the above diagrams?

Collision Theory

We are going to use this useful simulation to explain reaction rates in terms of collision theory. You can download it by clicking on it. When you try to open the download, you may need to go to settings/security and privacy/open anyway. Trust me! Also, you may need to update your java. Just follow the instructions on your computer!

Once you have the simulation, follow these instructions.

1. Click the many collisions tab

2. Take a moment to look at the simulation and make yourself familiar with it. Then press reset all and begin the exercise below.

3. Add 2 pumps of molecules A.

4. Observe the motion of the molecules.✏️ When do they change direction?
✏️ Are they all travelling at the same speed?

5. The molecules in a sample can be represented by a Maxwell-Boltzmann distribution

6. Increase the temperature in the simulation.
✏️What is happening to the motion of the molecules?

7. Add 2 pumps of the Bc molecules.
✏️ Are all the collisions resulting in a reaction?
✏️ What factors might be necessary for a reaction to occur?

Collision theory states that in order for a reaction to occur particles must collide with sufficient energy to overcome the activation energy of the reaction and in the correct orientation.

Factors affecting the rate of reaction

Watch the video below and make notes as to what are the four factors that affect the rate of reaction. For each factor, explain using collision theory how it can increase the reaction rate.

Now go back and use the simulation to see if you can model some of the factors.

This entry was posted in 6/16 Kinetics and tagged collision theory, kinetics, reaction rates on by .

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Before beginning with this topic, you should review energy profile diagrams from the Energetics topic. ✏️ What is missing from the above diagrams? Collision Theory We are going to use this useful simulation to explain reaction rates in terms of collision theory. You can download it by clicking on it.