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?

Year 11 ISA

Today we're going to start the year 11 ISA - this isn't a practice, but the real one that will count towards your final marks. The tasks for today are as follows:

1. Watch the demonstration at the front of the class, thinking about different variables involved with the tests.
2. Copy out the hypothesis - 'The extension of a rubber band depends on the force applied'.
3. Write the method that you will use for the practical next week (we will sit section 1 on Friday). There are similar experiments here and here. BBC bitesize has some good material about Hooke's Law too.
4. Hand your named planning sheet back to Mr. Cole.

Progress test revision

These are the topics that we've completed so far this year (with Miss Chandarana and me), which could be included in the progress test:
Biology: Cells, tissues and organs, organisms and their environment, enzymes, respiration.
Chemistry: Structure and bonding, structure and properties/quantitative chemistry (moles).
Physics: Forces, energy and momentum.
Remember to use your revision guides to help you, and feel free to come and find either Miss Chandarana or me if you have any questions tomorrow morning. Good luck!

Energy flows

Today we're going to look at the other Biology material we need to cover for this half term. Answer the following in your books:

1. What is biomass?
2. Explain where the energy in most foodchains originally comes from:
3. What reaction produces energy in living cells? Where does this reaction occur?
4. Name four ways in which an organism can lose energy so that it isn't available higher up the food chain:
5. What organisms carry out decay?
6. What conditions are needed for decay to occur?
7. Briefly explain how carbon can travel from the atmosphere into the bird, through the soil and back to the atmosphere again.
8. How much energy is needed to produce a steak?
9. How would this change if the animal was intensively farmed?
10. Watch this video, and explain why this body DIDN'T decay:
11. Try this activity. Is there one way or more than one way for carbon to cycle?

Metals

Today we're going to do some work with transition metals and review the section you have looked at with Ms. Elias.  Answer the following in your books:

1. Where are transition metals found in the period table?
2. What are some properties that they share?
3. What is an alloy? Give some properties of one alloy from the table:
4. In what two ways do metals differ from one another?
5. Give one thing that all metals have in common:
6. Go to kerboodle, and log in to find the materials in the 'co-ordination and control' assignment. Start working through these to prepare for the progress test. You should start with the 'ups and downs of life' section, as the practical didn't work too well in class.

Biology 2.3 - Enzymes

We're going to start the nesxt topic section today, looking at enzymes and their roles in the body. Answer the following questions in your books:

1. What is a protein made from?
2. List two ways that proteins can differ from one another:
3. What do enzymes do in the body?
4. Can any enzyme act on any molecule? Use the scientific term to describe this.
5. List two factors that influence how well an enzyme works:
6. Watch this animation. Give the name of a digestive enzyme and explain where it is produced in the body.
7. Briefly explain what the other two enzymes from the table are, and what they break down.
8. Watch the video below, explaining what the active site is:
9. Why would enzymes that work in the stomach be able to tolerate a very low pH?
10. Complete the handout with exam style questions from Mr. Cole. This will be homework, which you should mark yourself and bring back to class.

Section 1 revision

We will sit the section 1 paper for the ISA on Tuesday, which will be about experimental design.  Make sure you understand the following points:

1. Read through the notes on experimental design, making sure you know what accuracy, reliability and range mean in relation to an experiment. Writing dot points or definitions will help you.
2. Make sure you know what independent, dependent and control variables are (in general and for our maggot experiment) off by heart. Write these down once more even if you know them.
3. Finally, and most importantly, you will need to be comfortable with all the terms on this AQA website. Read through them, writing down any you aren't sure about so that you can ask Miss Chandarana or myself before Tuesday.

Finally, good luck! Email me if you have any questions, otherwise see you Tuesday.

ISA planning

Today we're going to fill out the planning sheet for the ISA next week. The hypothesis is -

'The distribution of invertebrates in a habitat depends on the light intensity.'

Use these links for your research, and fill out all the boxes on the sheet this lesson.

• Similar experiment using choice chambers.
• Similar experiment using maggots (Calliphora).
• Good explanation of phototaxis.

ISA

The NEW ISA is going to deal with small invertebrates choosing between different conditions. Answer the following to help gain the infromation you need to prepare yoursleves:

1. What is a choice chamber?
2. What did Lorentz and Pavlov do (use link from 1)?
3. Briefly describe the three parts of a fly's life cycle:
4. What happens when you shine a bright light near maggots? How do they sense the light?
5. What would your dependent variable be for this experiment (bottom of the page)?
6. Read the abstract from this essay. What is the independent variable here?
7. Watch this video. Which habitat did the spider prefer? Did it have an equal opportunity to go into ALL habitats?




8. Look at the diagram below. What control variables were met in this experiment? What was one that wasn't?                        



The experiment was started at A, halfway through at B and finished at C.



9. This link has notes and a method for a similar experiment to what we will do. Why is it important that the room can be blacked out?

10. What choices do the Monkeys on this beach have? Describe what would need to change for this to be a fair test about Monkeys' drink preference:                             

Planning ISA

The hypothesis you need to write onto your planning sheet is:
'The surface area of water in contact with air effects the rate of cooling.'
Once you've written it in, plan the rest of your experiment using the spaces on the sheet.

ISA preparation

Today we're going to keep preparing for the ISA which we'll be doing next week. Answer the following in your books:

1. What is the independent variable?
2. If we were looking at rates of cooling in different coffee cups, what would be the independent?
3. What would our dependent variable be for the same experiment?
4. Name 5 control variables that we would need to keep:
5. Where should the independent and dependent variables go in a table? What about in a line graph?
6. For the graph below, what effect does the volume of water have on the rate of cooling?
7. For the graph, which container material had the slowest rate of heat loss?
8. State the independent and dependent variable in this experiment:
9. Watch this animation, stating the three ways that heat can be transferred:
10. What would be a good colour to paint a bottle to help it keep heat better?
11. What is another name for thermal radiation?
12. LIst two factors that can affect condensation or evaporation:
13. What happens to the kinetic energy in the ice blocks here when warm water is poured on them?

Cells homework

I know you've done this with Miss Chandarana, but this video is a great piece of revision material. If you can tell me how many cells there are in a human body (in the first part of the video) I'll give you an achievement point.

Safety features in cars

Today we're going to talk about the last section of the physics unit we've been doing, car safety features.
Complete the following activities:

1. Copy the formula for calculating impact forces here. 
2. If you increase the stopping time, what happen to the force of impact?
3. What features in cars help increase the stopping time in a collision?
4. Try this quiz, writing down the answer to number 3. 
5. Explain why there used to be a higher percentage of fatalities in car accidents than there is now.
6. Using the link above, explain how a crumple zone works as an important safety feature in modern cars.
7. What did James Ryan invent? How did it help car safety?
8. Using the picture below, explain how an air bag helps people avoid injuries. What does it increase?
9. Watch this video, and explain how this new feature might help make people safer. Why might people be against using this technology?
10. Watch this video and list each of the features you can see at work.  What do they all have in common?

11. What could you change to expose these dummies to lower forces?

12. Why does the cannon move backwards less than the cannonball moves forwards?

Progress test revision

This link comes via Mr. Lawrence, and is a teacher explaining different parts of the additional science curriculum (what you're doing at this year). You can choose playlists and skip to the relevant bits for help with answering exam type questions.

Bitesize has some good revision stuff too, try these pages for notes, activities and tests:
Biology 2.1
Biology 2.2
Chemistry 2.1
Physics 2.1
Physcics 2.2