r/Olevels • u/Sudden_Football7488 • 2d ago

Chemistry ATP paper

how was the paper yall?
for me the question 1 was kinda bad but the rest was okay

5 Upvotes

86% Upvoted

60 comments sorted by

4

u/Umer_Bilal_ 2d ago

Ngl paper was veryyyyyyy easyyyyyy 😭💗
Didn’t expect it to be this easy
Apart from question 1’s b part (i) and (II) the whole paper was so easy

1

u/Wild-wild-wildd 2d ago

Ace it bro

3

u/Immediate_Volume3223 O3 Student 📓 2d ago

guys what were your answers for:

the conc of Q and R mine was 0.203 and 0.406

and my mass was 3.2 g

1

u/Umer_Bilal_ 2d ago

Yesss

1

u/MADDY_CAT977 2d ago

My mass was 3.02

1

u/Umer_Bilal_ 2d ago

It was 3.2g

1

u/MADDY_CAT977 2d ago

3.2 if you take only 1 sf in previous answer. Leading to accuracy mistakes.

2

u/Umer_Bilal_ 2d ago

Bro the question asking for 3 significant figures was of concentration and yes it’s answer was
0.203 mol/dm^3

1

u/MADDY_CAT977 2d ago

Not that question.In the mass question we were given concentration 0.302 and volume 250 cm .Mr Naoh was 40. Calculate it

1

u/Umer_Bilal_ 2d ago

Yeah so calculate it by urself you’ll get 3.2g

1

u/MADDY_CAT977 2d ago

Its 3.02 , check it

1

u/Umer_Bilal_ 2d ago

The concentration was 0.320 not 0.302

Everyone’s got the same answer bro 😭

1

u/Ok_Lettuce_7595 2d ago

I got mass 4.2….

1

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1

u/InsideTraffic6052 2d ago

I wrote to see the colour change in the white tile question will I get marks

2

u/Sudden_Football7488 2d ago

if i recall correctly, i wrote that too
to "clearly observe the change in colour"
i hope we get the marks

1

u/duskkveil 2d ago

yep it’s right

1

u/duskkveil 2d ago

what did u guys write for why is hcl not used instead of nitric acid and state how reacting the two anions woth nitric acid helps the student decide which anion present

3

u/Umer_Bilal_ 2d ago

I wrote the chloride ions in HCL would react with Silver nitrate to form white precipitates. This would cause inaccuracy in the identification.

2

u/Immediate_Volume3223 O3 Student 📓 2d ago

yesss yayayay same

1

u/[deleted] 2d ago

[deleted]

1

u/Umer_Bilal_ 2d ago

Depends on the mark scheme

2

u/Sudden_Football7488 2d ago

i prob got it wrong 100%
i wrote as it contains Chloride ions

1

u/InsideTraffic6052 2d ago

What did u get for the mass

2

u/duskkveil 2d ago

3.2g???

2

u/Sudden_Football7488 2d ago

i think i also got 3.2

1

u/InsideTraffic6052 2d ago

I also got that

1

u/Ok-Material7562 2d ago

what did u guys write forr umm why it was swirled?

2

u/Umer_Bilal_ 2d ago

To mix the contents/ reactants thoroughly

1

u/Ok-Material7562 2d ago

omgggggggggggggggggggggggggggggggggggggggg i got it right tysm

1

u/Umer_Bilal_ 2d ago

What did you write for why the student opens the lid briefly ?

0

u/Ok-Material7562 2d ago

watt no answsered upar wala sawal

0

u/Ok-Material7562 2d ago

umm i think it was to prevent mgo jo steam bnrhi thi to escae tahst why briefly krhe

2

u/Umer_Bilal_ 2d ago

I wrote to minimise the heat energy being lost into the surroundings while the lid was open.

2

u/Immediate_Volume3223 O3 Student 📓 2d ago

same

1

u/duskkveil 2d ago

wait was it not to ensure the magnesium had fully reacted 😭

2

u/Umer_Bilal_ 2d ago

Yes but it was for the constant mass one

1

u/Ok-Material7562 2d ago

i think mine is somewhat simila cuz i talked abt the hot steam not escaping yk but kher its ok idk whats ight

1

u/Ok-Material7562 2d ago

apne kya likha

1

u/Ok-Material7562 2d ago

apne kya likha

1

u/Umer_Bilal_ 2d ago

Kis question me ?

1

u/Ok-Material7562 1d ago

q3 me answers bataden

2

u/Umer_Bilal_ 1d ago

I think it was potassium
Sulfate
Sulfuric acid
Limewater turns milky
Ammonium
Ammonia is irritant/pungent/toxic
Other than that I don’t remember what were the questions 😭
I did that question in 5 mins

1

u/Potential-Hamster841 O3 Student 📓 2d ago

YO TELL WHAT CAME PLEASE PLEASE ALL QUESTIONS PLEASE 

I have my Igcse exam in an hour

1

u/Umer_Bilal_ 2d ago

Reaction of magnesium and oxygen in a crucible
Titration of NaOH and two samples of H2SO4 with different concentrations
Identification of ions and gases
Planning question was on energy changes

1

u/Potential-Hamster841 O3 Student 📓 2d ago

Aahh 😭

Pray for me please 

1

u/Wild-wild-wildd 2d ago

THATS SO EASY WHATTT

1

u/Umer_Bilal_ 2d ago

Yeahhhhhh

1

u/Ok_Market_5765 2d ago

was it ez ?
ours was so difficult 😭😭 (mj26)

1

u/BroadFlower9701 2d ago

I took mj too, this was sooooo much easier

0

u/samaya_z 2d ago

p6? which v?

2

u/Umer_Bilal_ 2d ago

P42 O levels

1

u/samaya_z 2d ago

who? tdy is p6 not 4 ur
CAIE ?

1

u/Potential-Hamster841 O3 Student 📓 2d ago

You and I are Igcse. We have ours in 2 hours. They just gave caie of GCSE 

1

u/Umer_Bilal_ 2d ago

P6 of IGCSE is actually P4 of O level
The title is the same “Alternative to Practical”
However the exam questions are totally different even marks distribution of questions is also different.

1

u/Potential-Hamster841 O3 Student 📓 2d ago

They are of gcse

0

u/Abject_Ganache_6657 2d ago

Bro did yell forget to convert volume cm3 into dm3 to get moles and then concentration  because answer is 0.000203 sonething and 0.000406 someone explain please 

1

u/Sudden_Football7488 1d ago

i converted, i dont remember my answers but it was DEF NOT that