Electrolysis

Today we'll be doing some more theory on Electrolysis. Answer the following in your books:

1. Watch this animation. What does OIL RIG stand for?
2. Explain what happens at the positive and negative electrodes, using the terms 'reduced' and 'oxidised'.
3. if you use Electrolysis with a solution of copper sulfate, what gas is formed at the positive electrode?
4. Give one use for electrolysis:
5. What is electroplating? Briefly explain how it works:
6. What is bauxite? What metal does it contain?
7. How is bauxite purified into aluminium for use in industry? Explain where the electrodes are in the tank, what is produced at each one and the problems involved with doing so.  
8. This video is taken form the link below, and explains what we've been looking at today. Take a look to make sure that you have the points for number 6 correct:
9. Make sure you remember the HOMEWORK, which is finding a video to help you from the link below.

Exam revision

To help us start preparing for exams, there are plantey of good resources on the internet. You should be doing past papers from the AQA link below, and I've also just found a good series of videos on youtube which you can see here.
We're doing C2, B2, and P2 in year 11 but some of the year 10 stuff (C1, P1, B1) could come up too so maybe watch them if you have a spare minute. Remember that the earlier you start doing little bits of revision regularly the better prepared you'll be.

Test Material

For the test tomorrow, make sure you know the following subjects:
Physics:
Electricity and Radioactivity.
Chemistry:
Rates and energy.
Biology:
Simple inheritance

Try the quizzes on the bitesize links above, and use the handouts that you were given last week to practice more exam type questions.
If you want more exam practice, try the AQA page for all the past papers for year 11. Obviously, some of these are topics we haven't covered yet but if you just do the ones that relate to what's listed on this post above, you should be ready for tomorrow.
Good luck, and let me know tomorrow morning if you have any questions!

Progress test revision

Today we're going to do a bit of summary revision stuff for the progress test tomorrow. Answer the following in your books:

1. What is collision theory?
2. What is the activation energy in a reaction? How does it change when you add a catalyst?
3. Give an example of an exothermic and an endothermic reaction:
4. Briefly describe the Haber process, and explain what it produces:
5. How would you get a higher yield from a reversible reaction which is exothermic going forward?
6. If the atomic number for He is 2, how many electrons would this atom contain?
7. What particles make up the nucleus?
8. Explain what fission and fusion are.
9. This diagram shows a Helium isotope emitting a beta particle. How could you write an equation to show this?                                                               
10. What are the three types of radiation?
11. Finally, try and finish this activity. What charges attract each other? What name would you give to the positive and negative particles?

Rates of reaction/energy

We're going to revise some of the rates of reaction stuff we've already covered in class, and keep looking at exo/endothermic reactions. Answer the following in your books:

1. What does a catalyst do? Give an example of a biological catalyst from this link:
2. Name the catalyst in this reaction and explain what it does:
3. Why are catalysts important in industrial processes?
4. Watch this animation, and explain how reaction rates can be measured:
5. What does the Haber process produce? What is this product used for?
6. Watch this video on the Haber process. What two things determine what temperature and pressure to carry out the reaction?                                            
7. What is a reversible reaction? What things can influence which way it goes?
8. What is the relationship between pressure and % yield of ammonia? What is the yield at 300 atmospheres?

HOMEWORK
You need to name two other catalysts and explain what reactions they are involved with. This is due on Friday.

Fission and Fusion

Today we're going to finish off looking at nuclear reactions and start preparing for the next topic - rates of reaction. Answer the following in your books:

1. Explain in one line what nuclear fusion is.
2. Give two reasons why fusion is not able to be used in power stations yet?
3. Read this article, and give three advantages of using fusion to generate electricity.
4. In a chemical reaction, what are the reactants and products?
5. Give three ways that you could change the rate of a reaction:
6. Why is the speed of molecules important to reaction rates? What happens if they don't move quick enough?
7. What is a catalyst? Why would they be good for industrial processes?
8. Use the graph below and your knowledge of catalysts to explain how a catalyst helps a reaction happen more quickly:

9. Try this activity to build your very own atom. What can go wrong?

HOMEWORK - Watch this documentary about the Fukushima nuclear disaster, and explain the steps leading up to the accident, and how it was fixed.

Radiation

Today we're going to catch on some of the radiation section we've already seen, and introduce some new topics. Answer these in your books:

1. Watch this animation and explain what can happen to living cells when they are exposed to radiation:
2. Briefly explain what is meant by nuclear fission. Use the picture below if you think you remember:
3. What is nuclear fusion?
4. Use the animation (and your knowledge of the subject) to give one similarity and one differnce between fission and fusion.
5. Describe what the numbers mean in this nuclear reaction equation: 
6. Describe how fission is used to generate electricity. Why are control rods important in this process?
7. What went wrong during the Chernobyl disaster?
8. Answer the following exam type question - 'Evaluate the use of fission reactors to generate electricity.'Make sure you include an intro, arguments for each side, and your own point of view in the conclusion.
9. Try this activity to build your very own atom. What can go wrong?