Search results

This

Oh, do some half-yearly past papers. Ignore the ones you haven't learnt yet. And if you've got James Ruse friends, ask them for past Production of Materials theory tests.

Hmmmmmmmmmmmmmmmmm looks incorrect. I think ethanol has a theoretical molar heat of combustion of around 1XXX, but I can't remember. 8XXX is definitely wrong, since it's a lot bigger than the value of the theoretical molar heat of combustion. It's true there's experimental error, but that...

To separate remaining glucose and some water from ethanol.

You did 6 instead of 8.

Hmm... I never did Senior Science, but in the other sciences that I did, when they want you to assess a claim, you should heavily criticise all points that are presented - regardless of whether the claims are true or not. If they're true, you just say that it's a valid claim. If it's false, you...

Commerical name = Biopol Chemical name (IUPAC?) = Poly(3-hydroxybutanoate) Common name = PHB? A diagram of biopol........google images is a good place.

Molar mass is 60. And a typo in percentage error, but that's insignificant.

What ^ said. Google Images is probably one of the best things invented on Earth. By the way, you don't need to learn all of those above. You only need to do one of them, and one of either lead-acid cell or dry cell.

Ahah junior high...

Probablyyyyyyyyyyyyyyyyy........... It's really hard to say o_o

I think it's the reactants' state is written as their state before reaction, and products' state written as state after reaction.

Most likely the sources of error, ie. why the experimental value of the molar heat of combustion of the fuel was lower than the theoretical value. They might also ask you how to minimise these losses. Physical sources of error: - Heat lost to atmosphere by convection (minimised by enclosing...

Yeah, sometimes there are dodgy bits in Conquering Chemistry, but the majority of it are correct. The dodgy bits won't really lose you any marks though. I haven't used Chemistry Contexts 2, so I can't make any comment on that one xD But I've been using Conquering Chemistry throughout the...

Radioisotope: Radioactive isotope Transuranic element: Element transformed from uranium. They have an atomic number > 92 (uranium has atomic number of 92) Technically transuranic elements are also radioisotopes, but I'll assume that radioisotopes all have atomic number <92...

Read the Conquering Chemistry 4th edition text book. I'm not joking, it helps. Read it chapter by chapter, read every single word (besides the ones that say that it's not in the syllabus). Don't move onto the next sentence until you've understood the first. After you get familiar with...

I'm guessing the describe part wants you to briefly talk about how galvanic cells function, ie. The galvanic cell functions by readily creating a potential difference by the oxidation/reduction reactions occuring in the cell. The explain part wants some more detail of how the...

Temperature > Boiling point = gas Melting point < Temperature < Boiling point = liquid Temperature < Melting point = solid Solute in water = aqueous Let's use... NaCl for example? Gas = when >1465 degrees celcius Liquid = when > 801 and < 1465 Solid when < 801 Aqueous when dissolved in water

me =P

You don't understand that 1.5 hours isn't enough to earn good marks in physics.