Science Skool Blog

Updates - It's been a while...

2/12/2020

Hi all

I haven't posted a blog post for a long time now. My job is much busier than it was before, and it is difficult to juggle it, family and everything else in between! I would like to welcome new users to the site and I hope that you find it useful in your studies.

I have uploaded some new GCSE physics summary notes which you should find useful. These were actually created by a colleague of mine and I am very grateful that she was happy for them to be uploaded, so if you are reading this, then thank you!

I am hoping to post some more model answer exam papers in the coming weeks or months, so watch this space!

Good luck in any upcoming mocks, I wish you all the best.

Alex

2 Comments

anonymous

28/6/2021 19:48:50

Hi, it appears there is an error in the mark scheme for the isotopic abundance questions in the physical chemistry AS section.

For question 4, the isotopic abundance of Fe-56 is written an 90.007, when in calculations it has been converted to 0.9007 (missing out a 0). Either the calculations are incorrect, however even if calculated using 0.90007 an invalid answer is given, or the isotopic abundance of Fe-56 should be 90.07 (a more accurate fault)

Alex link

28/6/2021 20:44:24

Hi Anonymous!

Great spot, I missed the zero out, it should be 0.90007. It doesn't give an invalid answer though. It calculates to 1.342% Fe57 and 0.115% Fe58.

Updates - It's been a while...

Leave a Reply.

Author

Archives

Categories