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AQA GCSE - Unit 3 (P3,B3,C3) New specification papers. Watch

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    co2 is poisonous and if left untreated in the body without it being exhaled it could dissolve and when this occurs it is acidic, this could disrupt the function of many enzymes in the body whoch would be fatal as enzymes carry out many processes in the body
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    WOOOOOOHOOOOOOOOOOOO! 1,000 POST!!!! :eek:

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    Would you guys say, that i'm okay at B3?
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    Hmmmm, think i'll recap B1,B3,C3 AND P3 tomorrow - spend like 1 hour on each
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    just noticed we didn't do physics/chemistry today :L
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    (Original post by Captain Anonymous)
    just noticed we didn't do physics/chemistry today :L
    I'll fix that:

    P3 (Only some, since I haven't revised all of it):

    Part 1:
    1)Describe how an X-Ray image is formed.
    2)Radiographers have to leave the room whilst the X-Ray is being conducted. Why?
    3)Explain why soft tissue does not show up on an X-Ray image.
    4)Explain how an ultrasound scan works.
    5)Pregnant women have ultrasound scans rather than X-Rays. Why?
    6)CT Scans offer more detail then a usual X-Ray, Explain how and why.
    7)Describe how ultrasound can be used to find defects within metals.

    Part 2:
    1)Describe what happens to a light ray when it enters a more dense medium from a less dense medium
    2)Describe what happens to a light ray when it enters a ((A)Diverging lens (B)Converging lens.)
    3)Describe the image formed by a converging lens when the object is behind the principal focus.
    4)Describe the image formed by a converging lens when the object is in front of the principal focus.
    5)Describe the image formed by a diverging lens.
    6)What is the role of the ciliary muscles and the suspensory ligaments in the eye?
    7)Name the two problems that could occur with eye-sight, describe what causes them and their solutions.

    Part 3: Math stuff

    1)An incident light ray travels into a substance at 39 degrees, the ray emerges on the other side at 29 degrees. Calculate the refractive index of this substance.
    2)The refractive index of a substance is 1.2. An incident light ray travels into the substance at 15 degrees. Calculate the angle of refraction.

    That's all for now

    Enjoy
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    ahahah lol
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    How do you come up with these questions :L
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    (Original post by Captain Anonymous)
    How do you come up with these questions :L
    My Brain
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    seriously? :L, they're really good and useful
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    (Original post by Captain Anonymous)
    seriously? :L, they're really good and useful
    Yeah, I just think of them as I go along, if you want I could carry on doing this. When I learn the stuff myself of course.

    I mean, I won't make up questions for topics that I haven't revised.
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    yhh that would be great, could you do any for C3?
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    (Original post by Captain Anonymous)
    yhh that would be great, could you do any for C3?
    Ohh.. that's going to be tricky since I haven't done a lot, but. I will do some on the topics I have done.

    C3:

    Part 1:
    1)Describe some problems that Newland's period table had.
    2)Mendeelev organised the elements into groups, why did he do this?
    3)Mendeelev left gaps in his version of the periodic table. Why?
    4)Boron is in Group 3, state how many outer electrons are in its shell.

    Part 2:
    1)Describe what happens to the Alkali metals, as you move down the group.
    2)Describe some characteristics of the Alkali Metals.
    3)Complete and balance a symbol equation for the reaction of Sodium with Chlorine.
    4)Describe what happens when you dissolve a compound of Potassium Bromide in water.
    5)Complete and balance a symbol equation for the reaction of Sodium with Water.
    6)What gas is formed?
    7)Describe what happens when you dissolve this substance in water.

    As I said, I haven't done much C3, so these questions might not be as accurate. If they're not. I apologize.
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    brilliant... just brilliant
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    (Original post by Captain Anonymous)
    brilliant... just brilliant
    Haha thanks
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    (Original post by Captain Anonymous)
    brilliant... just brilliant
    Just one more I forgot:

    - As you move down Group 1, the Alkali Metals become more reactive. Explain Why. In your answer, refer to the electronic structure of the elements.
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    How have you lot learnt unit 3 over the holidays ? Please can somebody tell me how they have revised or gone over topics they haven't covered in class ? Because I find that I sort of lose interest/concentration when I read through my nelson thrones book. C3 is hard :'(
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    (Original post by Midnight1811)
    How have you lot learnt unit 3 over the holidays ? Please can somebody tell me how they have revised or gone over topics they haven't covered in class ? Because I find that I sort of lose interest/concentration when I read through my nelson thrones book. C3 is hard :'(
    Hey,

    The way I revised (may be different for you).... I get the texbook, FYI I use this: (legendary - I have e-book version if you want me to send it to ya): http://www.waterstones.com/waterston...FXMRtAod728A1g.

    I get the textbook, note down the stuff I need to learn in my exercise book. Go away for 10 minutes. Then come back and attempt to re-write all the relevant detail. I might do this once or twice
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    (Original post by tohaaaa)
    Hey,

    The way I revised (may be different for you).... I get the texbook, FYI I use this: (legendary - I have e-book version if you want me to send it to ya): http://www.waterstones.com/waterston...FXMRtAod728A1g.

    I get the textbook, note down the stuff I need to learn in my exercise book. Go away for 10 minutes. Then come back and attempt to re-write all the relevant detail. I might do this once or twice
    Send me the e-book please
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    (Original post by Farhan96)
    Send me the e-book please
    Will do, in the morn' though :3 As I am off to rest ma head.

    Night and see ya tomorrow
 
 
 
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