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***2013 LC Chemistry Before/After***

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    #272
    MarieCurie22
    Registered Users Posts: 204 ✭✭MarieCurie22


    Hamza Malik wrote: »
    Can anyone explain water of crystallisation? :pac:

    Talk about insulting going behind your teachers back :P


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    #273
    Hamza Malik
    Registered Users Posts: 161 ✭✭Hamza Malik


    MarieCurie22 wrote: »
    Talk about insulting going behind your teachers back :P

    Haha I didn't want to overload you with questions :rolleyes:


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    #274
    ray2012
    Registered Users Posts: 893 ✭✭✭ray2012


    Just going over the experiments and my dream experiment section would be :

    Q1 - Iron tablet experiment
    Q2 - Test for anions/flame tests
    Q3 - Heat of reaction between HCL and NaOH


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    #275
    MarieCurie22
    Registered Users Posts: 204 ✭✭MarieCurie22


    ray2012 wrote: »
    Just going over the experiments and my dream experiment section would be :

    Q1 - Iron tablet experiment
    Q2 - Test for anions/flame tests
    Q3 - Heat of reaction between HCL and NaOH

    Sorry to burst your bubble q2 is ALWAYS organic chem experiments...and HCL and NaOH is tipped :)


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    #276
    ray2012
    Registered Users Posts: 893 ✭✭✭ray2012


    MarieCurie22 wrote: »
    Sorry to burst your bubble q2 is ALWAYS organic chem experiments...and HCL and NaOH is tipped :)

    Just shows how much I know about the chemistry course/How good I am at chemistry ! :o

    Organic chem experiments are usually grand, so hopefully it's ok. Anyone else studying much on the chapter of Water/pH and those experiments? My teacher was sure there was going to be a long question on the pH/water or something I think!


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    #277
    Hamza Malik
    Registered Users Posts: 161 ✭✭Hamza Malik


    ray2012 wrote: »
    Just going over the experiments and my dream experiment section would be :

    Q1 - Iron tablet experiment
    Q2 - Test for anions/flame tests
    Q3 - Heat of reaction between HCL and NaOH

    Q2 will be preparation of ethanoic acid. Mark my words. If not, soap experiment :)


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    #278
    ray2012
    Registered Users Posts: 893 ✭✭✭ray2012


    Hamza Malik wrote: »
    Q2 will be preparation of ethanoic acid. Mark my words. If not, soap experiment :)

    I hadn't planned on revising the soap experiment to be honest, I'll go over it now however now that you mentioned it :pac:


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    #279
    MarieCurie22
    Registered Users Posts: 204 ✭✭MarieCurie22


    Hamza Malik wrote: »
    Q2 will be preparation of ethanoic acid. Mark my words. If not, soap experiment :)

    Soap came up in either 2009/ or 2010 so id say not...


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    #280
    MarieCurie22
    Registered Users Posts: 204 ✭✭MarieCurie22


    ray2012 wrote: »
    I hadn't planned on revising the soap experiment to be honest, I'll go over it now however now that you mentioned it :pac:

    I wouldnt bother the big two are ethanal and ethanoic acid!


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    #281
    meleanor
    Registered Users Posts: 84 ✭✭meleanor


    outnumbered wrote: »
    Year in and year out, the following covers you:
    All experiments
    Acids bases pH, Indicators.
    Fuels thermochem
    Chemical equilibrium/Rates
    Radioactivity
    Electrochemistry
    Oxidation and reduction
    Stoichiometry
    Gases
    The basics of Question 5.

    This is the exact same as my study plan :pac:


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    #282
    Hamza Malik
    Registered Users Posts: 161 ✭✭Hamza Malik


    MarieCurie22 wrote: »
    Soap came up in either 2009/ or 2010 so id say not...

    Yeah but soap always appears every 3/4 years so its a possibility. It came up in 2010.


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    #283
    outnumbered
    Closed Accounts Posts: 1,696 ✭✭✭outnumbered


    I don't get why people don't study every experiment to perfection? They are guaranteed :P


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    #284
    lizardspock
    Registered Users Posts: 46 ✭lizardspock


    I reckon one of the water experiments is going to make an appearance, most likely the winkler/BOD.. hasn't been on it years


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    #285
    outnumbered
    Closed Accounts Posts: 1,696 ✭✭✭outnumbered


    meleanor wrote: »
    This is the exact same as my study plan :pac:

    Hi 5


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    #286
    meleanor
    Registered Users Posts: 84 ✭✭meleanor


    The thermochemistry experiment and recrystallization experiments are long over due. Eyes on those, lads!


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    #287
    Monsieur Folie
    Registered Users Posts: 1,988 ✭✭✭Monsieur Folie


    thermochem would be absolutely lovely, actually. I hope you guys are right! :D


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    #288
    xJEx
    Registered Users Posts: 166 ✭✭xJEx


    meleanor wrote: »
    The thermochemistry experiment and recrystallization experiments are long over due. Eyes on those, lads!

    What are ya on about ya mad yoke recrystallisation was 2011? :P


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    #289
    outnumbered
    Closed Accounts Posts: 1,696 ✭✭✭outnumbered


    meleanor wrote: »
    The thermochemistry experiment and recrystallization experiments are long over due. Eyes on those, lads!

    What's the thermochem experiment? We don't do them like this.


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    #290
    Hamza Malik
    Registered Users Posts: 161 ✭✭Hamza Malik


    xJEx wrote: »
    What are ya on about ya mad yoke recrystallisation was 2011? :P

    Water of crystallisation is due (2006) Crystallisation of benzoic acid was on 2011


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    #291
    Monsieur Folie
    Registered Users Posts: 1,988 ✭✭✭Monsieur Folie


    My teacher predicted Ethanal/Eth Acid (which seems to correlate with the general consensus here!), and after that I can't remember what she said. I don't really mind though, all titration Q's are similar, you get loads of marks just for knowing your general procedure, and there aren't many of the general experiments and they're all handy enough.


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    #292
    meleanor
    Registered Users Posts: 84 ✭✭meleanor


    xJEx wrote: »
    What are ya on about ya mad yoke recrystallisation was 2011? :P

    Oops meant the water of crystallization!
    And the polystyrene insulator cup thermochem exp!


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    #293
    xJEx
    Registered Users Posts: 166 ✭✭xJEx


    Hamza Malik wrote: »
    Water of crystallisation is due (2006) Crystallisation of benzoic acid was on 2011

    Oh right the 're' confused me


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    #294
    Monsieur Folie
    Registered Users Posts: 1,988 ✭✭✭Monsieur Folie


    outnumbered wrote: »
    What's the thermochem experiment? We don't do them like this.

    It's really simple so don't panic. You put an acid (HCl) in one cup, a base in another (NaOH) and take the temperature. Wait til they're the same, then mix the two and record the rise. That's the general jist, it should be in your book, you need to know a calculation based on it and some general FAQ's but that's it. :P


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    #295
    woopah92
    Registered Users Posts: 482 ✭✭woopah92


    I hate working out the value of "x" for the water crystallisation experiment. We had a class test with a question like that, trust me, it is NO fun when your calculator dies mid-question.


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    #296
    MarieCurie22
    Registered Users Posts: 204 ✭✭MarieCurie22


    woopah92 wrote: »
    I hate working out the value of "x" for the water crystallisation experiment. We had a class test with a question like that, trust me, it is NO fun when your calculator dies mid-question.

    KEEP GOING WITH WHAT YOU HAVE!!!!! even if your answer is totaly messed up continue on like it isnt theyll give you full marks for part 2!!


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    #297
    outnumbered
    Closed Accounts Posts: 1,696 ✭✭✭outnumbered


    Monsieur Folie wrote: »
    It's really simple so don't panic. You put an acid (HCl) in one cup, a base in another (NaOH) and take the temperature. Wait til they're the same, then mix the two and record the rise. That's the general jist, it should be in your book, you need to know a calculation based on it and some general FAQ's but that's it. :P

    Ah thanks! I know it now. It's we do all question 3 experiments together and not chapter by chapter cause we don't have a book- too expensive :P


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    #298
    Monsieur Folie
    Registered Users Posts: 1,988 ✭✭✭Monsieur Folie


    outnumbered wrote: »
    Ah thanks! I know it now. It's we do all question 3 experiments together and not chapter by chapter cause we don't have a book- too expensive :P

    We got a book but our teacher never used it. Literally, she told us to just leave it at home. I'm glad to have it though, the book has really thorough explanations in it and it's a good reference when you need to figure out something you didn't grasp in class.

    However, the book I use is severely bloated considering the chem course is actually quite short and simple if you boil it right down to the necessary information, so you've probably been fine without one tbh.. :P


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    #299
    woopah92
    Registered Users Posts: 482 ✭✭woopah92


    MarieCurie22 wrote: »
    KEEP GOING WITH WHAT YOU HAVE!!!!! even if your answer is totaly messed up continue on like it isnt theyll give you full marks for part 2!!

    I know how to do it and everything, but I was in the middle of an exam this year and the battery on my calculator died. Not a nice feeling. Especially when you can't remember the last figure that was on the calculator :pac:


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    #300
    MarieCurie22
    Registered Users Posts: 204 ✭✭MarieCurie22


    woopah92 wrote: »
    I know how to do it and everything, but I was in the middle of an exam this year and the battery on my calculator died. Not a nice feeling. Especially when you can't remember the last figure that was on the calculator :pac:

    Thats where you go and make sh*t up! Youll still get your marks...I feel like such a school teacher XD


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    #301
    simons545
    Registered Users Posts: 90 ✭✭simons545


    MarieCurie22 wrote: »
    Omfg me too, TCD down first then Ucd for science choice in both but i intend on doing chem...:D
    Monsieur Folie wrote: »
    It's looking like Trinity for me, but I have UCD down as well. You? :)

    Hahahaha see you both there then! All depends on the bloody HPAT results in about a week and a bit's time. The general science course in TCD looks good to be honest. Would love to do the biology,chemistry and maths options. Wbu?


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