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astro is like so easy!

it may well be like reversing, but its more like putting the brake on when reversing, you get pushed back into the seat

yeah, if they give you a q with all values in 2dp, use 2 dp, but dont round off till the final answer, or you will be way off

to minimise the error.. basically

well, you rekon you could get the actual q's out of him???... ok then, nm did he involved in makeing the physics exam by any chance???

oh thats rite, we did cooks cannon and some dutch??? silver coins

that be scaled it bem either that or your teacher cant use a calculator

have a squiz for yourself http://www.uni-regensburg.de/Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/index_e.html

neither p or n type have a charge p have a hole, so when an electron enters the hole, it becomes negativly charged, and likewise n type

actually the cathode is reduction, and anode is oxedidisation, not the other way round

qualitative is weather it is there or not, a yes or no answer basicaly quantitave is a mesurement so it is quallitative

and as i said b4, never describe it as rust, in an experiment you are ment to have observations, not assumptions, you need to think as a two y/o and say what it looks like, ie 'brown shit on a nail' but in a more exam friendly way

agreed, stupid 4u maths, it always finds some way to screw everything up, though im not going to bad in chem, so i not to worried... i worried more bout fisiks (and english but thats gone)

for electrolisis you need to get a negative answer because the way they did the table, the voltages mentiond are voltages produced in a half equasion, so if you had to put a voltage across it, it would be giving of a negative voltage

all plastics are polimers, such as pvc and polly-styrine, but there are also natural polimers

one thing in chem i can do, if nothing else, is electrolitic and galvanic cells!

*hint* NEVER call it rust, specially if your talking zink, call it a 'redish brown deposit' unless asked something about rust, and its still safer to call it corrosion and about theon only way to quantitatly mesure rust that were ment to know, is the weigh, leave corrode, rub corrosion off...

well i think its a galvanic cell, maybe not... i havnt heard of it as spontanious before b) *gets e^0 table out* Fe2+(aq) + 2e --> Fe(s) -0.44V Cu(s) --> Cu2+(aq) + 2e -0.34V (fliped round) ----------------------------------------- Cu(s) +Fe2+(aq) --> Fe(s) + Cu2+(aq) -0.78 (electrons...

hell no, 4u is much easier than englihs any day, well maths more often than not has one answer, english you could write that the pope was jewish and get full marks

keep going with it, theres no use looking that far ahead, yes it is a biach, but you get the ability to do it throughout the year, and make sure you keep revising complex, otherwise you will get to the hsc and realise that what was easy to learn, is a biach to relearn