You have to make the height correct. That is why I said in the answer the TIP of the flame (Not the whole flame)bruh that gives more incomplete combustion
Potentially. I can't really say how they mark in terms of writing wrong things, but you can just hope for the besthmm for the conductivity graph question, i accidentally said Ba(OH)2 is a weak base, but i provided correct reasoning for the graph and equations. Will i still loose a mark?
if the question had "explain how...", you may lose a mark as your answer may not have been specific enough? e.g. they may have been expecting you to say smth like remove the tripod or mount the spirit burner. fingers crossed it'll be allg!In the diagram, the flame was very far away from the beaker, I didn't say to put it right on the beaker, just closer
You may get away with it as it is only 2 marks, so answers might not need to be that detailedFor 23 b, could you say to make the flame closer to the beaker to minimise heat loss? I feel like I've also seen it in a past paper, but that's what I wrote
Edit: I now realise you included this, but I didn't explicity mention HOW you would make the flame closer. I just said to move it closer to the beaker
Yeah I think it should be fine, pretty sure in the Pearson textbook it has chloroethane + water reaction and also the chloroethane + base reactionThis has been discussed before, but in your opinion would the substitution of water with chloroethane (using sulfuric acid catalyst) to produce ethanol be suitable as an answer for question 34, step 1?
What if I forgot to say the colour change but said the after adding sodium carbonate powder there were bubbles that formed. I can’t believe it either, I was so cooked during the exam.. smhIt depends on your observation. If you said the permanaganate changes colour from purple to colourless that is fine
Nah that's fine I just put both there for an overall holistic solution set, so it covers more answers that could potentially be given. Just saying the sodium carbonate and bubbling is all you needWhat if I forgot to say the colour change but said the after adding sodium carbonate powder there were bubbles that formed. I can’t believe it either, I was so cooked during the exam.. smh
They only usually mark 1 q in the exam on sig figs so don't worry too muchI can tangibly feel myself losing random marks through sig figs
I don't know what this means like as in, they choose one specifically to be marked with sig figs in the criteria? But thank you for the reassurance!!!!They only usually mark 1 q in the exam on sig figs so don't worry too much
Yep basically thatI don't know what this means like as in, they choose one specifically to be marked with sig figs in the criteria? But thank you for the reassurance!!!!