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Okay, if you're confident enough about that. I have Chemistry Contexts 2 and it says on page 108 that the process begins with iron-58, and that the substance from which cobalt-60 is made from is cobalt-59. Fe-58 is bombarded with a neutron, but it beta decays to give cobalt-59, not 60. To...

It's pretty difficult to find a direct and obvious link between two dot points from two modules. It's because they're completely different topics that they're separated into different modules. :p Do something that you can ramble on about. For example, the potential of ethanol as an...

Anything worth above 4 marks irritates me. I hope my HSC exams will end on a good note. My chemistry marks have been consistent for quite awhile now, and a lot of the information is probably permanently stuck in my head as I had to write about them probably over 50 times in the past year...

Overseas with my parents, and probably to Queensland with my boyfriend. You can probably tell that Schoolies isn't my thing.

I would go with precipitation. I hate titration to bits.

Why not use both?

I don't think it matters. In Chemistry in Context, the question asked on sulfates in fertiliser said it was dissolved in water. Anyway, I'm sure we don't have to know why we use HCl. :p Acidic cations? What do you mean? :confused:

Just a note - don't panic! This is the exam-stress and study techniques thread. We still have 4 more days until the exam. Use your time well, and sleep early the night before. :) All the best to every Chemistry nerd.

Could you tell us exactly what the sheet says? If your teacher told you that there's no need to study, then she or he is probably right. 10% is very little, and since it's skill-based, you can't really study for it anyway. I'm just talking crap here because you need to show me what the...

Unpolluted rain is slightly acidic due to dissolved CO2. It's normal. You don't need to mention it when talking about acid rain because it isn't a pollutant.

I think the chemical property would fit the iodine-thyroid one better. That question confuses me too.

Straight, every second monomer unit is inverted.

Alkene monomers undergo addition polymerisation. Glucose is not an alkene and cellulose is not an addition polymer. Serge: Don't forget to mention functional groups. Weirdkhar: Revise alkenes and both forms of polymerisation.

Cathode: I2(aq) + 2e- → 2I-(aq)

Sulphur, CO.

I was that person. :p Bird poo, or the fancy-pants term - guano, contains ammonia, which is a base. I think this one's kind of dodgy though. Acids: Ethanoic - vinegar, methanoic - ants, hydrochloric - stomach, citric - fruits, sulfuric, nitric and carbonic - acid rain. Bases: Sodium...

Matter cannot be destroyed or created. I have a fleeting suspicion (oh, now I see that "energy" is in fact in the title of the thread) that this has to do with energy. You probably already know - when bonds are formed, energy is released, and when bonds are broken, energy is required (or...

Um, like, people don't usually have numbers in their names?! :rolleyes: Yeah, she could have taken another look, but that's hardly "the stupidest thing you've heard in your whole life". You obviously don't read your own posts. Agreed. Disagreed. Whatever. I have come to the conclusion that...

I don't like to think there are signs. If you believe in one sign, you'll start seeing signs everywhere. It's enough to drive anyone mad. :rolleyes: Yes, I suppose the whole candle thing breaking might seem to symbolise something, but it's likely that you're interpreting it that way because...

Harts is starting to have some really nice dresses. There's this deep green one which has two diamonte brooches and is really hard to describe so I won't do it here ... but it's so pretty. The problem with Harts is they hardly have sizes below 8. I bought my dress from there though, I got the...