Jump to content

Search the Community

Showing results for tags 'chemistry'.



More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • General
    • General Discussion
    • Debate and Discussion
    • Literature
    • Chat
    • University
  • International Baccalaureate
    • General IB Discussion
    • Languages A1/A Literature
    • Languages A2, B and Ab Initio
    • Economics and Business & Management
    • History
    • Psychology
    • Experimental Sciences
    • Mathematics
    • The Arts
    • Other Subjects
    • Extended Essay
    • Theory of Knowledge
    • Creativity, Action, Service
    • Exam Discussion
    • Pre-IB/MYP
  • About
    • About Our Forum

Categories

  • General IB Downloads
    • IB Syllabus & Data Booklets
    • IB Diploma Statistics
    • Other IBO documents
  • Languages A
    • English A1 Pre-2013
    • Other Languages A1 Pre-2013
    • Language A2 Pre-2013
    • English A Post-2013
    • Other A languages Post-2013
  • Languages B & Ab Initio
    • Language B and Ab Initio
  • Business and Management
    • Notes
    • Sample Internal Assessments
  • Economics
    • Notes
    • Sample Internal Assessments
  • Geography
  • History
    • Notes
    • Past paper responses
    • Sample essays
    • Sample Internal Assessments
  • Philosophy
  • Psychology
    • Exam Revision
    • Internal Assessments
    • Old Syllabus
  • Science
    • Group 4 Project
    • Biology
    • Chemistry
    • Physics
    • Environmental Systems and Societies
  • Mathematics
    • Notes
    • Sample HL Internal Assessments
    • Sample SL Internal Assessments
    • Sample Maths Studies Internal Assessments
  • Arts
  • Other Subjects
  • Theory of Knowledge
    • Guidelines and Notes
    • Sample TOK essays
    • Presentation examples and information
  • Extended Essays
    • Biology & Environmental Systems
    • Chemistry
    • Economics and Business & Management
    • Group 6
    • History
    • Language A1
    • Language B
    • Mathematics
    • Other Group 3 subjects
    • Physics
    • Psychology
  • University Application Essays and PS
  • Extracurricular
  • Pre-IB/MYP

Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


Skype


Twitter


Exams

Found 681 results

  1. Could someone please help me check that my calculations are correct?? I am calculating the purity of aspirin and the mass using a back titration, however, I am getting weird results and I'm not sure what I'm doing wrong I could really use your help?
  2. I need to change my RQ a little bit probably... I know it is not good to make an EE of science without doing experiments yourself, but I won't change my mind. My RQ is Why are the physicochemical effects of celestial bodies important to generation of life? I will narrow the life, but I don't know if I should focus on a certain physical or chemical effect, since the information might not be enough. Celestial bodies I think maybe using one astro, or using more and comparing them.(I think Jovial and/or Saturnine systems). Would appreciate some help...
  3. Hello everyone, Right now I'm really starting to seek out topics for my IA. However the ones that I have found interesting so far ended up being beyond my knowledge to accomplish. For example my first idea was : - To establish at which points and in which environment graphene paints would absorb more CO2 then released while they cured and my other topic was : - To investigate pH trends of heavy metal bioleaching with different concentrations of sulphur Could someone give me a push into the right direction in how I could procure the necessary data or what type of procedure I should use? Thank you in advance!
  4. rams

    Chem IA help pleaseee

    I think I have an idea of what I want to do but I reckon it is too simple, can I please have some advice- I am thinking of changing the concentration of a ligand (not too sure which one) and measure the absorption, or maybe do this with one or two other ligands. Then I will sketch a graph and use the Beer-Lambert law to determine the value of eb. Please let me know if it is bad or not, I am kind of struggling.
  5. Laura Serrano Rodriguez

    Which HL to drop to SL?

    Hello everyone, I am currently doing 4 HL's but I need to drop one as soon as possible. Right now I am taking Math, Physics, Chem and Econ HL. I want to be an astrophysicist. I know that I need to keep Physics HL, I do not know about Math because even though I am strong at math, the teachers say that it will be very challenging for me and I will not be able to get the score I want, but if I drop to Math SL she said that the course would be kinda too easy for me not letting me develop my skills. I have to choose between Chem and Econ which one to drop. If I were to have Physics, math, and chem HL the teachers say I would pick the "death combo", and I can see why. But they complement the best If I were to pick Physics, econ, and chem HL, would I need more maths but should I be okay with just Math SL for astrophysics? or should it be better if I keep Math HL? The other option would be to have Physics, math, and econ HL, in which math would be the most challenging one for me. I have tried the 4 for a semester, and I am allowed to keep it like that for another semester before yr12 starts, but me and my math teacher would like if I decide as soon as possible, if possible before the second semester of my first year starts. Thank you all for your help! All thoughts are welcomed!
  6. "To what extent was the cold war responsible for the separation between North Korea and South Korea?" is this too broad? please someone help how i should phrase my research question. I really do have interest and a lot of knowledge in this area (the Korean War) & (The Cold War)
  7. Hi, I'm in my first year of IB and I am starting to research potential topics for my chemistry extended essay. Because I want my extended essay to include one of my passions, I decided to write it about something related to medicine, pharmacy or even climate change. So far, all my ideas have been rejected by the supervisor due to them being inappropriate or too difficult. But I think I finally came up with something usable, I still need to work narrowing it down but do you think to research about the effectiveness of expired meds such as Ibuprofen or aspirin and relating it to the maybe useless expiration date of some meds? (they are only there because of law). Do you think it will be enough for a chemistry extended essay? Thanks in advance
  8. Hi, I'm planning to do my IA on investigating the effect of different concentrations of cyanuric acid on the chlorine concentration in swimming pools. Any idea how to find out the concentration of chlorine in the water? I've heard of the use of titration before, anyone know how the titration works? Help is much appreciated. Thank you
  9. I'm aiming to get into the Health Sciences program at McMaster University or Life Sciences at UofT, but I'm wondering whether I should take HL or SL chemistry. I know that it would be easier to get higher grades in SL, but I've also heard that HL helps a lot in terms of understanding university content. How much of a difference is there between the two? Are marks more important or is knowledge more important? For those who have taken HL - how much does it help in uni?
  10. Hello everybody! Really hope everyone is trying hard in IB. I wanted to ask you guys about chemistry HL in IB. This year I'm finishing my IGCSE and I have to choose the subjects I will be taking in IB. I've asked a lot of teachers, searched online and mostly people say that chemistry HL is quiet hard, and this is really concerning for the fact that I want to be a doctor and most of the universities require biology and chemistry HL. If there is any of you taking chemistry please inform me, I would really like to hear your opinions and if you find it hard or not,,, THANK YOU🌸
  11. melodrama_lorde

    My IA about tea- too complex?

    I was considering doing my IA about tea (because I'm obsessed with it heh). One idea that I have is measuring the effect of water temperature on the caffeine content of black tea. Considering I'd have to measure the caffeine content at different temperature intervals, and also take multiple trials, is this far too complex? And is extracting caffeine itself a complex procedure for an SL Chem IA? merci merci merci for any help Also, any other suggestions would be highly appreciated.
  12. This lab investigates the strengths and weaknesses of experimental procedure. By holding the law of conservation of mass to be true, the experimental results show exactly how much error the procedure caused. In the IA rubric of analysis and evaluation, the report scored 5 and 6 respectively, for a total of 11/12.
  13. Hi guys!! Im retaking HL Chemistry and SL Math this upcoming November and I was wondering if there is any advice anybody could give me?.. Or if there is anybody in the same position as me who is also retaking one of the subjects in November:) If you guys have any advice regarding possible online review courses, materials you recommend, or just the nature of the November examinations I would really really appreciate it. Thank you!!☺️
  14. So I'm considering dropping Chem HL down to either Chem SL, Art SL, or Film SL (Online). I'm thinking of studying computer science but I found out that I don't actually need Chem for the universities I'm planning on applying too. I would say that I'm more creative than technical (Math and etc) but I love technology (interested in VR and design aspect of tech). I'm starting to struggle in Chem HL because my teacher isn't good but I have tried self studying but I don't think I can maintain good grades if I continue. (Also my math and physics teacher isn't good as well so I have to study for that). Because of this I'm considering switching up my courses but I can't decide what to choose, either way I'll end up having English HL as my new HL. Here are the current statuses of the classes: [If I stay] Chem HL: Fav Science, Bad Teacher, A lot of content to catch up on Chem SL: I'm ahead of them in terms of content but I don't know how good the class's teacher is, apparently they are doing a lab rn Art SL: The art class has already done 8-10 experiments, made 3 art slides, and starting their artist research Film SL: Online class, Extra 1000$ fee per year, I like how it's independent coz I can schedule myself and I work better on my own (easier to focus), I also have prior experience in editing and making videos So what do you guys think I should do?
  15. So I'm in year 2 and my EE topic has failed because my supervisor kept on delaying meetings, and then said that my topic might not work, so I have to go with a Plan B topic: How heating in the brewing of coffee affects the amount of of caffeine/(some other chemical) in it. I could also look for a chemical that is harmful/beneficial. I will have a good personal engagement for this one, but I heard that topics with coffee are overdone. Is this true? Any advice? Thanks for your help?
  16. For example, if my IA involves finding the BOD of different bodies of water, should I link it to something such as nitrate concentration in the water body?
  17. lucyxkim

    The gap between HL&SL

    Hello Can anyone tell me how big the gap between chem HL&SL and econ HL&SL are? I'm currently taking math, chem, physics HL & english langlit, mandarin B, econ SL. Would dropping chem from HL to SL and switching econ SL to HL reduce the workload? I already feel quite overwhelmed by the amount of work from math&physics HL
  18. Blubblyblubbly

    Chem IA help

    Hello, This is my first post, I was just seeing if I could use this website as a way to reach out to some people who may be better suited for thinking in terms of IA's. My chemistry IA idea is currently about the corrosiveness rate of acid rain at different temperatures. I'm trying to extend my topic beyond the scope of the class and see maybe what applications different building materials could have in different regions based on its rain's acidity. I want to have 3 acids made aqueous, HNO2, HNO3, and H2SO4 tested on 3 or 5 different temperatures. I want to do room temperature (~70 degrees F) and 1 or 2 above and below using an ice bath and hot plate (possibly 5 to try and make a graph to interpolate other temperatures between them). The building materials I want are limestone (since it's easy and the most well-known victim of acid rain), steel, and copper as they are common, multi-purpose building materials. The thing is that I am investigating specifically the relative corrosiveness of each acid on the material. Mostly comparing the % change between temps as the acid/material stay the same (H2SO4 on limestone has x rate of corrosion at room temp, does that increase to 1.15x should the temperature go up or 0.85x if it decreases?) and comparing those percentages or relative changes between acids. The main issue I have is with the different molarities/concentrations of acid that I should use. I know that the metals will be less reactive than the limestone and that it will show results much quicker than either copper or steel. However, I want to bump up the concentration/molarity so that I don't have to sit forever and watch steel sit in an acidic solution, eroding too slowly for me to see. Also, I've been scouring and I cannot find anything about where to even start with concentrations for anything other than limestone if anyone has any resources about the corrosion rate of steel/copper in acid rain. Thanks y'all
  19. Hey guys, Hope everyone did well for their exams. I got a 4 sitting at a 53 on the grade boundary for chem HL and need 1 mark to progress to the next grade boundary. I'm contemplating requesting a remark except that my component scores and total scores are already quite low P2: 25 P3: 33 IA: 15 Anyone has been in a similar situation and has advice to offer?
  20. keeley45733

    Bio, Chem or Physics

    Going into jr year and class choices are due in a few weeks, please respond and thank you in advance to the ppl that do What sciences should I take and at what level if I wanna go into engineering or medical. Like what would be the best base for college? Also at what level should I take math? ^ 2 HL spots and 1 SL
  21. I wanted to ask whether this topic would be suitable for an extended essay in chemistry. It involves comparing the effectiveness of different (or components in them) of physical and chemical sunscreens. In order to do so, I can either find out the effect they have on the voltage output of a DSSC, or I was thinking of using spectrophotometry. So is this idea okay? The topic is finalized, but just finding the exact research question/aim was difficult. Any help is appreciated as my supervisor doesn't reply to emails and we currently have holidays for a few weeks.
  22. TuckerBarnhart

    HELP ME PLEASE

    I have 3 long questions.... I REALLY NEED YOUR HELP If I get 14 in my Chemistry SL IA, How well should I do in the exam to get a 7 in Chem???? (I know I should get all 7 in 3 papers, thats not my question. My question is how high should I get within the 7 range) Also, my Econ teacher is not a real econ teacher (sounds weird but its true). She was actually a 4 years Bussiness&Management teacher. But 2 years ago, our real Econ teacher had an incident so he had to go back to his country(England). SO basically, she taught us Econ for 2 years.(ofcourse, she didn't teach anything,, basically it was studying on our own) Because of that, in a econ class, we only have 5 people. I thought I was screwed But I SOMEHOW managed to understand whole thing by myself and actually think I did no less than 6 in the exam. (like honestly my predicted grade from my classmates and teachers is 7 and my gpa in econ is A+(99.2/100)) BUT HERE IS THE FREAKING PLOT TWIST. MY ECON TEACHER, GAVE ME A GOD DANG 28/45 in my FREAKIN IA!!! (SHE SAID SHE"S AFRAID OF GETTING MODERATED DOWN AND HARM HER CAREER....) SHE DIDN"T EVEN ASSESSED IT PROPERLY. SHE GRADED 15 IA's (3 per person) in like 1 hour!!!!! I asked alumnis, I asked other economics IB moderators, I asked econ private tutor. I showed them all my IA. THEY ALL SAID MINE IS NO LESS THAN 37/45 (ESPECIALLY MY MACRO IA IS NEAR PERFECT) So my question is, IF MY IA is really a quality work that deserve 37/45, will they grade like 9 points up??? I mean we only have 5 students so all of our IA went to IB and I think it;ll get moderated individually(correct me if Im wrong). I am legit so scared if my IA will remain 28/45 with no reason... (Because I've never seen a moderation of 9 points increase or something) LAST LAST Question I had 3 EE supervisor. (Yeah, you saw that correctly. Our school is terrible). I chose English B as my EE subject. My first supervisor only stayed for first 3 months. He got fired from a school (He had an affair with alumni...) So substitue supervisor was given by school (I had no choice), it was English A Lit teacher (She was the best supervisor and I wished school let me finish EE with her...) But substitute supervisor only stayed for like 6 months. Because school found and hired a new English B teacher. But here is where all the trouble starts. This new teacher, is NOT A IB TEACHER. She taught English in Japan's Public school. She does not fully aware of whole IB system. So I HAD NO CHOICE BUT TO WRITE EE ALL BY MYSELF. BUT WHEN I SHOWED MY FINAL WORK TO ENGLISH A LIT TEACHER, (SHE TAUGHT IB FOR 11 YEARS), SHE SAID IF IT WAS FOR ENGLISH A, IT WOULD HAVE BEEN 22/34, BUT SINCE ITS ENGLISH B, SHE SAID NO LESS THAN 25/34 AND POSSIBLE 27/34 IF LUCKY. BUT THIS NEW SUPERVISOR WHO HAS 4 MONTHS OF IB CAREER GAVE ME A PREDICT OF 16/34!!!!! (WHY IS MY SCHOOL LIKE THIS) MY Question is , when EE moderators grades it, does this predict grade affect their moderation????? Sorry guys I have 3 long questions. But I really need your help. My school is arguably the worst school in Malaysia..... Please help me!!!
  23. Isabela

    Chemistry IA Help

    I am not sure what I can do my chem ia but I was hoping to do something in relation to medicine if its possible. Do you guys have any ideas of something that I could do? I really need the help.
  24. FaresRB

    Should I drop to Chemistry SL?

    Hello, I'm currently in year 1 of IB and I'm contemplating whether I should drop Chemistry HL to Chemistry SL. Also, I would like to know whether or not I'm required to take it at HL if I want to study undergrad bio in Canada or the US. Reasons why I want to drop: - Bad grades 4s and 5s sometimes 3s - I'm only doing it to strengthen my application - The Chem SL teacher is better - I love English literature My current subjects are: Chem HL, Bio HL, Business HL, English Lit SL, Math SL, Arabic Ab inito If I drop to Chem SL: English A Lit HL, Bio HL, Business HL, Chemistry SL, Math SL, Arabic Ab inito I've been thinking about this for the past three weeks and I'd appreciate much-needed advice!!!! Thank you!
×

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.