Search the Community
Showing results for tags 'internal assessmet'.
Found 4 results
How can I find uncertainties of [H+] using pH?Since this is an antilog equation, my teacher said that propagating concentration uncertainties from pH is beyond the scope of IB Chemistry syllabus so I would have to do another way. He said that I should " calculate half the range of the pH values for each variation." What does this mean???? For context, let's say my pH is 2.13 +/- 0.05 and my H+ concentration is 7.41E-3. How would I get the uncertainty of it? thank you so much 🙂
Math IA Topic Selection, need your help!
IBStudentInNeed posted a topic in Maths StudiesI want to do an investigation into the correlation between rising temperatures in Antarctica and the decreasing size of ice caps in Antarctica over the past decade. However, I am not entirely sure if this is feasible and I just wanted to get some opinions on this. Thanks!
Is my Biology HL IA topic good enough? (help)
ChocolateAndVanilla posted a topic in Biology and ESSHey! So my current topic for my Biology HL IA is "How does pH affect the glucose content in milk?" and I'm not sure if it is good enough to get a good grade (7). I wanted to change the pH of milk by the addition of bases and acids and then adding lactase which would break lactose into glucose and galactose. Then I would use glucose test strips to see what the content of glucose in all of the samples is. Is it good enough? Should I make it more complicated by checking something else? Or should I look for another topic? All tips and help would be much appreciated!
Can I do my IA in an option?
ToThinkIsToLive posted a topic in Biology and ESSIf so, can I do it in an option we are not studying in class? Also, must my IA be from the HL topics since I am doing HL Biology? Thanks.