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pH adjustment is one of the last steps.

Yeah I did the polyethylene bottle. Assumed it was HDPE.

Yeah, most of the questions were similar to past HSC. No shockers like our trial. Damn, I forgot to change my NH3 to a %. Oh well. Also, I MISSED THE ENTIRE BACK PAGE OF THE CORE. The questions about the Galvanic cells. They looked easy! Diagram labelling! Aww. 7 marks gone!

Relax.. you're in year 10.

Just accept it lol.

Hmm.. I'm trying to think of a part of the course that doesn't have any chemical equations... Any ideas? I'm thinking the water quality part of Chemical Monitoring & Management.

Thank god. I was having a heart attack.

I'm nice. And also, telling someone else consolidates my learning.

Yes there is a cation one. If you get a precipitate with HCl -> You have Pb If you get a precipitate with H2SO4 -> You have Ba or Ca If you get a precipitate with NaOH -> You have Cu, Fe2+ or Fe3+ I think... From the top of my head.

Yeah.

For pH calculations, significant figures in the question must equal decimal places in the answer. (Weird, I know.)

I did. I paced myself and summarised all of my term 4 topics for all of my subjects over the six weeks and it was a gift when the half yearly's came around at the end of term one. But I only did it coz my parents were yelling at me to do work. If I took a day off, they'd have a hissy fit.

When we were first introduced to redox in chem, I struggled to understand how reduction meant GAIN of electrons...

Now that you've said that, it will probably be in the exam.

Hmm... Calculations on the titrations or the lawn fertiliser prac. Maybe a 7 marker on various polymers and their properties.

+1

Yeah, and that mark places you at a certain rank...

My hand was bleeding the night before my english modules paper. Bleeding!!

I say, contact your teacher.

A bit irrelevant, but anywayz: I didn't feel like studying today so an hour ago, my brother pinned up a piece of paper on my study desk. It said: STUDY OR UWS True story.