Edexcel GCSE Chemistry Paper 2 Higher Tier 1CH0 2H - 20 Jun 2022 [Exam Chat]

well my answer was balanced and the question said to balance it so... its logical that i get all the marks?

What did you guys write for both the six makers? Was it like ammonia gas or something because it turned the litmus paper blue? And an ionic compound because it didn't conduct as a solid.

Also, was I the only one struggling to write much about the catalyst 6 marker because there wasn't much to say, expect that it reduced activation energy, more surface area so more collisions hence speeds up reaction rate?

For the catalyst 6 marker, i talked about enzymes as they're biological catalysts, and iron used in haber process

what did everyone get for the phosphorus and oxygen one? I got P4O10 if I can remember right

Was butene an answer for any question?
Also, there was this tick box question that told you to choose which one of the four was part of the same homologous series as an example, does anyone remember their answer to that, because that question just threw me off for some reason and I just guessed.

what did everyone get for the phosphorus and oxygen one? I got P4O10 if I can remember right

For the catalyst 6 marker, i talked about enzymes as they're biological catalysts, and iron used in haber process

the answer was as you go along more viscous
yeah I got butene for the wuestuon about the dehydration

what did people put for
a) the mass of CO2 produced from calcium carbonate (to 3 sig fig)
b) what would happen to the apparatus after a few days (iron wool oxygen question)

For the first one I got 2.20 (2.2) but it said 3SF so I wrote 2.20? I don’t know if this is correct. Anyone else?

what did you put for the question that asked how could you find out if all the magnesium reacted with oxygen?

the answer was as you go along more viscous
yeah I got butene for the wuestuon about the dehydration

what did you put for the question that asked how could you find out if all the magnesium reacted with oxygen?

weight cruicble, then reheat remaining mass for regular interval, then reweigh, repeat until no further decrease in mass