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Science Exam 2011

1235

Comments

  • #122
    ThisIsMySeat
    Registered Users, Registered Users 2 Posts: 8 ✭ThisIsMySeat


    Q: Each hydrogen atom shares two electrons with the oxygen atom.
    What name is given to the type of bonding that involves the sharing
    of pairs of electrons?

    Does this make it a covalent bond, or a double covalent bond?

    And about the Q where you had to give the unit for pressure, is it Pa or Pascals? I just said Pa ...

    Thanks


  • #123
    scipsss
    Closed Accounts Posts: 69 ✭✭scipsss


    iv estimated and i think im on the verge between a b and just getting an a.. i just hope i did enough to get the A :(


  • #124
    flump_master
    Closed Accounts Posts: 89 ✭✭flump_master


    If it's of any comfort to anyone you can lose up to 58 marks on the written paper and still get an A, or up to 90 overall. So don't rule yourself out too early :)


  • #125
    Slow Show
    Registered Users, Registered Users 2 Posts: 4,248 ✭✭✭Slow Show


    flump_master wrote: »
    If it's of any comfort to anyone you can lose up to 58 marks on the written paper and still get an A, or up to 90 overall. So don't rule yourself out too early :)

    You can lose 90 if your project merits full marks, I worked really hard on my project so I'm hoping I've left myself able to lose 70/80 marks, and however disappointed I am, I don't think I lost that much. September is so far away.


  • #126
    flump_master
    Closed Accounts Posts: 89 ✭✭flump_master


    Or lose 20 on your project and 70 on your written and so on and so forth.. And same here on the project- I didnt do anything horrible today but I lost some stupid marks :/


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  • #127
    fabulousdiva
    Closed Accounts Posts: 42 ✭fabulousdiva


    guys do you realise that on the SEC website the exam is under 1989 syllabus..? i thought we do revised syllabus?!


  • #128
    rorrissey
    Registered Users, Registered Users 2 Posts: 584 ✭✭✭rorrissey


    I did awful! :pac:


  • #129
    Lucan Bohs
    Registered Users, Registered Users 2 Posts: 651 ✭✭✭Lucan Bohs


    ThisIsMySeat wrote: »
    Q: Each hydrogen atom shares two electrons with the oxygen atom.
    What name is given to the type of bonding that involves the sharing
    of pairs of electrons?

    Does this make it a covalent bond, or a double covalent bond?

    And about the Q where you had to give the unit for pressure, is it Pa or Pascals? I just said Pa ...

    Thanks

    I said covalent


  • #130
    Joe95
    Registered Users, Registered Users 2 Posts: 118 ✭✭Joe95


    ThisIsMySeat wrote: »
    Q: Each hydrogen atom shares two electrons with the oxygen atom.
    What name is given to the type of bonding that involves the sharing
    of pairs of electrons?

    Does this make it a covalent bond, or a double covalent bond?

    And about the Q where you had to give the unit for pressure, is it Pa or Pascals? I just said Pa ...

    Thanks

    I said covalent, but then again I just guessed it, lol.


  • #131
    matthew8
    Registered Users, Registered Users 2 Posts: 9,599 ✭✭✭matthew8


    fabulousdiva wrote: »
    guys do you realise that on the SEC website the exam is under 1989 syllabus..? i thought we do revised syllabus?!

    An error on their part titling it the wrong way.


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  • #132
    P H A 7V T O M
    Closed Accounts Posts: 1,006 ✭✭✭P H A 7V T O M


    rorrissey wrote: »
    I did awful! :pac:
    I wouldn't worry too much. The experiments and project will be more than enough to take you up at least a grade if you put in some sort of effort.

    The exam required more "Critical Thinking" than prev. years I thought.

    Like I said, don't worry. Just chill out for 3 months or whatever, then feel nervous when you begin to open the letter.... Works for me anyway


  • #133
    Slow Show
    Registered Users, Registered Users 2 Posts: 4,248 ✭✭✭Slow Show


    I agree about the 'Critical Thinking'. I'd consider myself to be kinda good at that, but I thought a lot of questions were more straightforward than they actually were, and got ahead of myself...I think doing all the exam papers in school, including the sample papers, made me too aware of how questions were asked. Looking back at the questions I didn't get, if I'd been more careful and really thought it through, I could have applied most of what I'd learned from the course and got better answers. But look, it's in the past now, I won't know how I did until September, and I'll be weary of that for Leaving Cert. :)


  • #134
    phenomenale
    Registered Users, Registered Users 2 Posts: 25 ✭phenomenale


    P H A 7V T O M wrote: »
    I wouldn't worry too much. The experiments and project will be more than enough to take you up at least a grade if you put in some sort of effort.

    The exam required more "Critical Thinking" than prev. years I thought.

    Like I said, don't worry. Just chill out for 3 months or whatever, then feel nervous when you begin to open the letter.... Works for me anyway

    So full of wisdom :rolleyes:


  • #135
    Lucan Bohs
    Registered Users, Registered Users 2 Posts: 651 ✭✭✭Lucan Bohs


    No more chemistry or physics for me again :);):D


  • #136
    omg a kitty
    Closed Accounts Posts: 447 ✭✭omg a kitty


    Joe95 wrote: »
    For the air balloon one, I put 'air rises when it's heated', hopefully I'll get marks on that.

    Youll get most of the marks
    Hot air rises and cold air falls, because hot air is lighter than cold air. Therefore when the air in the balloon is heated, the air wants to rise causing the balloon to fly rise:)


  • #137
    matthew8
    Registered Users, Registered Users 2 Posts: 9,599 ✭✭✭matthew8


    omg a kitty wrote: »
    Youll get most of the marks
    Hot air rises and cold air falls, because hot air is lighter than cold air. Therefore when the air in the balloon is heated, the air wants to rise causing the balloon to fly rise:)

    I think he'll get all marks there. There were only 2 lines to write the answer


  • #138
    Desire.
    Closed Accounts Posts: 1,601 ✭✭✭Desire.


    Is said the hot air rises as it is less dense than the cold air.

    Full marks? :)


  • #139
    FunkyOxygen
    Registered Users, Registered Users 2 Posts: 39 ✭FunkyOxygen


    Question:
    p.s i'm TERRIBLE at science so i'm not ripping the piss or being sarcastic but you know the question about the resin thing? and it was like how would you know resin is hard or something i answered because most resin is hard eg cannabis resin. is that right?


  • #140
    Desire.
    Closed Accounts Posts: 1,601 ✭✭✭Desire.


    FunkyOxygen wrote: »
    Question:
    p.s i'm TERRIBLE at science so i'm not ripping the piss or being sarcastic but you know the question about the resin thing? and it was like how would you know resin is hard or something i answered because most resin is hard eg cannabis resin. is that right?

    No. :P

    The question was how would you know if the water at the bottom was hard or soft?

    The answer was soft and it can be proved by adding soap to it, and it will easily form a lather.


  • #141
    FunkyOxygen
    Registered Users, Registered Users 2 Posts: 39 ✭FunkyOxygen


    Desire. wrote: »
    No. :P

    The question was how would you know if the water at the bottom was hard or soft?

    The answer was soft and it can be proved by adding soap to it, and it will easily form a lather.


    Oh great! well atleast i did well in the rest so im guranteed an A :D NOT!! thanks for the help though


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  • #142
    FatRat
    Registered Users, Registered Users 2 Posts: 3,194 ✭✭✭FatRat


    What about because gas develops and grows when heated?

    That's what I said. I'm nearly sure it's right, I suppose I should have mentioned hot air rising alright. But hot air develops should be alright. #

    (Also, it's phrased much better in the actually exam by me. I didn't actually say "developed" I did it in Irish and I just can't think of how to phrase it in English.


  • #143
    matthew8
    Registered Users, Registered Users 2 Posts: 9,599 ✭✭✭matthew8


    Desire. wrote: »
    No. :P

    The question was how would you know if the water at the bottom was hard or soft?

    The answer was soft and it can be proved by adding soap to it, and it will easily form a lather.

    What compound makes hard water? I know calcium does so chose calcium chloride as compound (Because I know that chlorine is related to water) but my book says calcium carbonate. Would calcium chloride be acceptable?


  • #144
    Desire.
    Closed Accounts Posts: 1,601 ✭✭✭Desire.


    matthew8 wrote: »
    What compound makes hard water? I know calcium does so chose calcium chloride as compound (Because I know that chlorine is related to water) but my book says calcium carbonate. Would calcium chloride be acceptable?

    I also learned calcium but so I said calcium chloride. I think it's right because tap water is hard water and that goes through chlorination, so there would be chlorine in it?


  • #145
    Slow Show
    Registered Users, Registered Users 2 Posts: 4,248 ✭✭✭Slow Show


    I only ever learned about calcium and magnesium ions, so despite knowing it's not a compound, I wrote Ca+2 and was told I might get marks for it. Kindaa doubt it seeing as it's technically wrong but I live in hope.


  • #146
    matthew8
    Registered Users, Registered Users 2 Posts: 9,599 ✭✭✭matthew8


    Just looked at the paper and totted up what I think I got:
    Question 1: 34/52
    Question 2: 33/39
    Question 3: 27/39
    Question 4: 43/52
    Question 5: 33/39
    Question 6: 36/39
    Question 7: 34/52
    Question 8: 36/39
    Question 9: 36/39

    So some very bad questions while some very good, total 312/390 and if what I was told about the marking of coursework is true I won't lose any marks there but I can afford to lose around 12.

    For the light bulbs question, do washing machines have efficiency ratings?


  • #147
    Desire.
    Closed Accounts Posts: 1,601 ✭✭✭Desire.


    matthew8 wrote: »
    For the light bulbs question, do washing machines have efficiency ratings?

    I hope so, that's what I said. :pac:


  • #148
    P H A 7V T O M
    Closed Accounts Posts: 1,006 ✭✭✭P H A 7V T O M


    Desire. wrote: »
    I hope so, that's what I said. :pac:

    http://lmgtfy.com/?q=do+washing+machines+have+energy+ratings%3F


  • #149
    robman60
    Registered Users, Registered Users 2 Posts: 2,229 ✭✭✭robman60


    Decent exam I think, but it definitely tried to focus more on questions which required a knowledge of the syllabus, but applied in a different way. Good idea I think.


  • #150
    Slow Show
    Registered Users, Registered Users 2 Posts: 4,248 ✭✭✭Slow Show


    I'm doing my predicted marks too because I'm an insane freak who spends obscene amounts of time totting up marks.

    Question 1: 43/52
    Question 2: 36/39*
    Question 3: 39/39
    Question 4: 49/52
    Question 5: 33/39
    Question 6: 33/39
    Question 7: 40/52
    Question 8: 39/39
    Question 9: 27/39

    Which equals 339/390, there's probably a margin of error of around 10 each away. 329 is just below an A, 349 is greaaat. But with a project and experiments at around 190, hopefully, that gets me the A.
    Or I could be far too optimistic and in reality I did much worse. Mhmmm.


    *(might have got 39/39 but I'm being hard on myself regarding one question)


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  • #151
    robman60
    Registered Users, Registered Users 2 Posts: 2,229 ✭✭✭robman60


    For the question on water hardness could you have said the experiment with the soap lather for the question "How would you test between hard and soft water?" and "How would you prove this water is soft?"


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