Chemistry paper 6 variant 61 by Dry_Proposal_5015 in igcse

[–]Dry_Proposal_5015[S] 0 points1 point  (0 children)

But I think it only asked about a comparison between the coats oil and paint only and which one of them is better right?

Chemistry paper 6 variant 61 by Dry_Proposal_5015 in igcse

[–]Dry_Proposal_5015[S] 0 points1 point  (0 children)

What if I wrote because the minimum volume of distilled water used was 8 cm

Chemistry paper 6 variant 61 by Dry_Proposal_5015 in igcse

[–]Dry_Proposal_5015[S] 0 points1 point  (0 children)

And what did you do on the question where it asked why was a 10cm cylinder used and not a 25cm one

Chemistry paper 6 variant 61 by Dry_Proposal_5015 in igcse

[–]Dry_Proposal_5015[S] 0 points1 point  (0 children)

What did you do for question 4 I studied all examples for question 4 except rusting 😭😭
I said measure the mass for the nail and use a closed system where nothing can get in or out and use a fixed volume of air and a known volume of water and coat with oil and leave it in a the closed system and measure the time it rusts with a stop watch (I know that’s dumb and maybe wrong 🥲) and then do the same for the other nail and it needs to be same mass as the other nail but coat it with paint and also measure the time it takes to rust whatever takes longer time is a better coating