AQA GCSE Chemistry Unit 1 Exam (9th June) [OFFICIAL THREAD]

Reply 400

Lala205

2

That was such a great exam AMIRITE? :biggrin:

Reply 401

Suraiya03

5

For the last emulsifier question, I drew a diagram and I drew it wrong but I think the explanation makes sense so would they count the diagram or ignore it?

Reply 402

M0nkey Thunder

13

What did everyone get for the reduction of impact on the environment using the limestone in water?

Reply 403

mollie1711

1

what was the answer to the question about suspension of limestone??? was it the sulfur dioxide or carbon dioxide

Reply 404

CirqueDesRêves

3

Original post by M0nkey Thunder

What did everyone get for the reduction of impact on the environment using the limestone in water?

I put something really weird as I just guessed and said that as limestone is a base (it's alkaline or whatever) it can neutralise the acidity of sulphur dioxide and nitrogen oxides which cause acid rain? Idk if limestone is alkaline 😂 what did you put?

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Reply 405

ScreamingWhisper

9

Original post by M0nkey Thunder

What did everyone get for the reduction of impact on the environment using the limestone in water?

I wrote the carbon dioxide reacts with the limestone in water which also calcium hydroxide,this prevents CO2 from being released into the atmosphere therefore contribution to climate change/global warming because instead it reacts to produce calcium carbonate

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Reply 406

ScreamingWhisper

9

*less contribution I meant to say

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Reply 407

Mariax11

2

hated the 12 mark question but the rest of the exam was ok aha. How did everyone else find it?x

Reply 408

ScreamingWhisper

9

Also what about the question on the soend par about names f particles that include non metal and metal (I wrote Ions) and two non metals (I wrote molecules)

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Reply 409

M0nkey Thunder

13

Original post by ScreamingWhisper

I wrote the carbon dioxide reacts with the limestone in water which also calcium hydroxide,this prevents CO2 from being released into the atmosphere therefore contribution to climate change/global warming because instead it reacts to produce calcium carbonate

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Huh, could you not talk about the sulphur dioxide reacting with the limestone and water? Eh. I thought both were possibilities but it only asked for a single impact.

Reply 410

kiwifruit99

8

Original post by CirqueDesRêves

I put something really weird as I just guessed and said that as limestone is a base (it's alkaline or whatever) it can neutralise the acidity of sulphur dioxide and nitrogen oxides which cause acid rain? Idk if limestone is alkaline 😂 what did you put?

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I put something similar except I said that sulfur dioxide and nitrogen oxide dissolved in the water to form sulphuric acid and nitric acid which were neutralised by the alkaline limestone 😊

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Reply 411

adapttochangelad

6

Original post by mollie1711

what was the answer to the question about suspension of limestone??? was it the sulfur dioxide or carbon dioxide

I put something like sulfur dioxide is removed by reacting it with calcium hydroxide or calcium oxide which is formed from limestone in water. This is called flue gas desulfurisation and reduces sulfur dioxide reacting with rainwater to make acid rain.
Had no clue! Think this is wrong though!

Reply 412

ScreamingWhisper

9

Original post by M0nkey Thunder

Huh, could you not talk about the sulphur dioxide reacting with the limestone and water? Eh. I thought both were possibilities but it only asked for a single impact.

Yeah you could choose any, I just chose CO2 it was the only thing I could think of

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Reply 413

CirqueDesRêves

3

How did people find it? Spent about 20 minutes staring at that stupid non metal particle question, put "covalently bonded molecules" in the end 😂

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Reply 414

CirqueDesRêves

3

Original post by kiwifruit99

I put something similar except I said that sulfur dioxide and nitrogen oxide dissolved in the water to form sulphuric acid and nitric acid which were neutralised by the alkaline limestone 😊

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Oh yay! I thought I would get 0 on that question 😂

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Reply 415

M0nkey Thunder

13

Original post by ScreamingWhisper

Yeah you could choose any, I just chose CO2 it was the only thing I could think of

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Meh, alright :smile:

I'll just wait until an unofficial mark scheme comes up then. I can't spend most of today worrying about chemistry when I have History tomorrow... :sad:

Reply 416

12284

8

Original post by ScreamingWhisper

Also what about the question on the soend par about names f particles that include non metal and metal (I wrote Ions) and two non metals (I wrote molecules)

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i wrote ions too and electron. i wrote molecules first then crossed it out

Reply 417

thunderstormfire

12

I got that too

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Reply 418

Palette

14

I wrote sulfur dioxide reacts with water to produce sulfuric acid which reacts with limestone to produce calcium sulfate so less sulfur in atmosphere so less acid rain. Is this right?

Reply 419

camilla_carr

1

Original post by ScreamingWhisper

I wrote the carbon dioxide reacts with the limestone in water which also calcium hydroxide,this prevents CO2 from being released into the atmosphere therefore contribution to climate change/global warming because instead it reacts to produce calcium carbonate

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I wrote the exact same thing as you 😂

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AQA GCSE Chemistry Unit 1 Exam (9th June) [OFFICIAL THREAD]

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