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Here its time to learn all about what can affect the rate of a reaction ...... by the end of this section you should be able to :
use particle theory and collision theory to describe chemical reactions.
be able to define what reaction rate is and measure it.
explain how - temperature, concentration, surface area and catalysts effect reaction rates.
explain why the rate changes with time.
carry out practicals that investigate the factors effecting reaction rates.
(Learn)
Step 1 : So what are these theories - particle and collision and what do they have to do with chemical reactions?
Have a look as they are explained to you.... (Learn)
Mission 1 : Now put your new knowledge to use - read and complete the work on "Introduction to Chemical Reactions" in your work book. (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Step 2 : So we know things react - so why is it that sometimes the same things react faster than other times?
There are 4 key things that have an effect on reaction rate .... temperature, concentration, surface area and catalysts.
Let look at each in turn and see how each effects reaction rate. (Learn)
Temperature
Concentration
Surface Area
Catalysts
Mission 2 : See how well you understand the effects these changes have as you read and complete the page on "Factors Affecting the Rate of a Reaction". (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Here is a far more interesting way to explore the actions of catalysts ...... anyone got a pool?
Step 3 : So we can change how fast the reaction happens -how do we measure that? It can involve some Maths (which at the moment you don't need to worry about) and being able to read some graphs (that is more important). You also need to know why all reactions start with a rush then slow down and then eventually stop.
Hopefully this will help = watch. (Learn)
Mission 3 : Lets try out this new information as you read and complete the "Measuring Reaction Rates" page in your books. (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Playtime : If you want to try things out with this simulation - you'll the correct driver thingy to get it to work though. (Learn) (Create) (Share)
Challenge 1 : Enough with the theory = lets look at these for real. Well first look at what will/should be happening and then we'll try and replicate that in our lab. (If i doesn't work for us we can use the book data) Don't forget to take photos or video to put onto your blogs.
First lets look at how a reaction progresses over time = the exercise in your book "Investigating Reaction Rates" about collecting gas. (Learn) (Share)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Challenge 2 : How does temperature effect a reaction? Have a look at the video, then we'll have a go ourselves - "Investigating the Effect of Temperature on Reaction Rate". Don't forget to take photos or video to put onto your blogs. (Learn) (Share)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Challenge 3 : Lets do that again but this time we'll change the concentration - watch how its done then we'll have ago too - "Investigating the Effect of Concentration on Reaction Rate". Don't forget to take photos or video to put onto your blogs. (Learn) (Share)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Challenge 4 : Let look at changing the surface area this time - watch how they do it then we'll try. We have a couple of different ways of doing it - "Observing the Effects of Surface Area on Reaction Rate" and Investigating the Effect of Surface Area on Reaction Rate" Don't forget to collect photos or video for your blogs. (Learn) (Share)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Demonstration time : have a look at how a couple of other teachers demonstrate how changing surface area changes the rate of reaction - will you teacher do a demonstration too? If they do it could be worth videoing for your blog (or to be used as evidence later) (Learn) (Create) (Share)
Challenge 5 : Now for catalysts - watch how catalysts change the rate of the reactions then depending on what we have to use try out your own investigation based on the "Catalysts" page in your workbooks (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Mission 4 : At the end of this section of your Scipad you'll find (maybe) a puzzle page or two, a review planning page then a practice copy of the end of topic test. Complete these pages plus don't forget the definition page found at the start of the topic = you'll be ready for the test. (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Final Mission : Now its time for your end of topic test - do you need a catalyst?
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