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    a few more quick questions..

    what's an amine? and does but-2-ene mean there's a double bond in the second carbon or what? :s

    thanks
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    (Original post by Ohhai)
    Lol!! Damn..I hope not..
    Also, I'm going to Turkey this year for my holiday...antalya <3

    ................................ ................................ ..................

    I got these questions from the website stated on the advance article www.astronomynotes.com

    Review Questions

    1.What distinguishes Venus from the rest of the planets? Why is Venus so hot?

    2.What is a runaway greenhouse?

    3. How does the ultraviolet-water interaction explain why Venus is so dry? How is the same process prevented on the Earth?

    4. What major geological event occurred on Venus over half a billion years ago? How do we know?

    If Mars' atmosphere is over 90% carbon dioxide like Venus', why does it have such a small greenhouse effect?

    What atmospheric phenomenon can quickly wipe out any view of Mars' surface from above? What causes this phenomenon?

    Why does Mars have such a thin atmosphere? What is the runaway refrigerator?

    How does liquid water remove carbon dioxide gas from an atmosphere?
    Why does Titan, a moon of Saturn less massive than Mars, have a more extensive atmosphere than Mars and Earth? (Recall the factors that affect atmosphere thickness.)

    How do we know that liquid water once flowed on the surface of Mars?

    If life exists on Mars today, where would it be found and why?

    Where is water ice found today on Mars and how do we know? How deeply is it buried?

    What distinguishes Earth from the rest of the planets? What is so unusual about its atmosphere and what produces this unusual feature?

    What are the different ways that life removes carbon dioxide from the Earth's atmosphere?

    Where do coal, oil, and natural gas come from? What happens when they are burned?

    What is a natural (non-human) way that most of the carbon dioxide is returned to the atmosphere on Earth?

    How does plate tectonics regulate the climate of the Earth?

    What is the interaction of plate tectonics and liquid water?

    What is a non-natural, human activity that returns a lot of carbon dioxide to the atmosphere?

    How do we know that the increase in carbon dioxide is due to fossil fuel burning?

    How much difference could just a few degrees change in the global average temperature make in our climate? How could that affect our civilization?

    What have climate scientists found about the effect of humans on global climate?

    How are climate models tested?

    What are the benefits of the presence of the ozone layer?

    Is the greenhouse problem on Earth different from the ozone problem? How so?
    Oh wow.
    Um.
    Thanks ^^ I'll do a few. TBH though, I CBA to revise much anymore.
    I can't wait for all my exams to be over and for- ahhh losing focus again!!
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    (Original post by c4integrationisgay)
    a few more quick questions..

    what's an amine? and does but-2-ene mean there's a double bond in the second carbon or what? :s

    thanks
    lol you worry me C4.
    Amine is a R-NH2 functional group.
    But-2-ene... think of butane except it has a double bond not for the first C-C
    but for the second

    C-C=C-C

    like that. Add in the hydrogens yourself
    hope that helped!
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    (Original post by hollywoodbudgie)
    lol you worry me C4.
    Amine is a R-NH2 functional group.
    But-2-ene... think of butane except it has a double bond not for the first C-C
    but for the second

    C-C=C-C

    like that. Add in the hydrogens yourself
    hope that helped!
    rofl every post of urs helps me to be honest

    and as u can see.. chemistry makes me want to cut my wrists :mad:
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    Wow Chemistry Can Suck My ****
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    GUYYYZZZ!!!!

    On Fig. 5 the bottom diamond of Earth what does it mean by 'CO2 outgassed'?? What is 'outgassed'? :P
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    (Original post by c4integrationisgay)
    rofl every post of urs helps me to be honest

    and as u can see.. chemistry makes me want to cut my wrists :mad:
    LMAO ditto :yep: DW, you'll be fine
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    (Original post by c4integrationisgay)
    rofl every post of urs helps me to be honest

    and as u can see.. chemistry makes me want to cut my wrists :mad:
    :hugs: aww dw too much about it. It's just one crap exam.
    If you're in AS you can retake this same paper TWICE and you get to keep
    your highest mark each time!

    And I'm happy to help!
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    http://www.thestudentroom.co.uk/atta...8&d=1275743776

    Q3(ii)

    do you have any idea as to why it is propene? :confused:
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    (Original post by Saluki-Sake)
    GUYYYZZZ!!!!

    On Fig. 5 the bottom diamond of Earth what does it mean by 'CO2 outgassed'?? What is 'outgassed'? :P
    Outgassed: the slow release of a gas that was trapped, frozen, absorbed or adsorbed in some material

    :bigsmile: google define, it works wonders sometimes

    so er it's like the CO2 coming out of the rocks... :girl:
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    does anybody here wanna meet up for a quick fight? i really need to release some anger
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    (Original post by c4integrationisgay)
    http://www.thestudentroom.co.uk/atta...8&d=1275743776

    Q3(ii)

    do you have any idea as to why it is propene? :confused:

    No idea! I would have gone for hexene o_O
    Well it's an alkene because it's addition polymerisation...
    sorry no idea.

    THE GOOD NEWS IS, WHO CARES?
    That question won't come up, so move onnnn!!! :woo:
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    i am so scared good luck everyone
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    (Original post by c4integrationisgay)
    does anybody here wanna meet up for a quick fight? i really need to release some anger
    :puppyeyes: I'm too cute to fight.
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    (Original post by hollywoodbudgie)
    No idea! I would have gone for hexene o_O
    Well it's an alkene because it's addition polymerisation...
    sorry no idea.

    THE GOOD NEWS IS, WHO CARES?
    That question won't come up, so move onnnn!!! :woo:
    LOL that question had me sweating for like 10 minutes.. its not about whether it'll come up or not anymore, its simply a question of WHY THE HELL IS IT PROPENE?!?! would have lost like 100000 marks on that question because every other part asked about copolymer A, which i would have gotten wrong in the first place

    ah well.. chemistry revision will get postponed for a joint

    cya
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    (Original post by hollywoodbudgie)
    :puppyeyes: I'm too cute to fight.
    ...blowjob?
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    (Original post by c4integrationisgay)
    http://www.thestudentroom.co.uk/atta...8&d=1275743776

    Q3(ii)

    do you have any idea as to why it is propene? :confused:
    Look at the bit of the chain that differs (carbon 3 and 4).

    I'm gonna be nice and annotate it for you :p:



    You can tell the other two parts are the but-2-ene, 4 carbons in that square-ish arrangement.

    Simply count the carbons up in the different square-ish arrangement. As you can see in yellow there are three carbons, thus 3 carbons is pent. It's asking for the monomer of a polymer - so it must be an alkene. So it's propene!
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    oh.. btw what time is the exam tomorrow?
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    (Original post by c4integrationisgay)
    ...blowjob?
    :no: esp. not when you're angry.
    Stick to chemistry. Chemistry is sexy :sexface:*
    * It isn't. But I'd prefer you to think of this than getting a blowjob than me.
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    (Original post by c4integrationisgay)
    oh.. btw what time is the exam tomorrow?
    Morning. :rolleyes:
 
 
 
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