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Found 326 results

  1. When processing data, which values should I calculate the average from? Masses or moles of Mg and O, or ratio? Help!!
  2. I've just started IB for 2 weeks and am taking HL Maths, Physics, Economics; SL Eng Lit, Chi lang&lit, Chemistry. I'm in a HLSL mixed Chemistry class and personally I find Chemistry to be easy (up till now), so I'm considering whether I should take a forth HL in Chemistry. I am applying to the US therefore a predicted grade of 42/42 will be definitely much more helpful than taking a forth HL, but I'm wondering whether it is feasible to get a predicted(final) grade of 42/42 with 4 HLs. I will also apply for UK unis and I heard that they basically ignore your SL subjects, is this true? Any kind of advice will help! thanks!!
  3. Hi everyone. I want to do a chemistry EE in polymers, but not having read about polymers in the textbook, assuming that I could have done it over the holidays, I am unable to deeply understand the resources. I still have 13 weeks before I have to do the practical, but under my school's schedule I ought to have an rq by now. Does any one have any suggestions or ideas? Thank you.
  4. Hey I live in the Netherlands started DP1 this week and I was wondering if any European students that were also doing the IB wanted to create a study group. It would be cool if we took similar subjects so that we could help each other out, and I think it doesn't matter really were in Europe as the time is either the same or 1 or 2 hours difference Anyway if anyone is interested hmu. My IB classes are the following: Chemistry HL Biology HL English A Lit HL Geography SL Spanish SL Math SL
  5. Can I get into engineering at university without Chemistry as a subject Im taking Maths HL and Physics HL because i really dislike Chemistry
  6. Hi, all. With September drawing near, I am scrambling to mentally prepare myself as much as possible for the full diploma program. Truth be told, I am not accustomed to constantly revising my subjects throughout the school year. For some time, I've studied passively rather than actively. I let upcoming tests and exams dictate when I would study. It's a nasty habit and I am aware that this will have to change since I am going into the IB program. I was wondering if any of you have developed daily study schedules that work for you? If so, would you be willing to share? Additionally, I would appreciate some advice as to how to approach my courses in terms of studying. My subjects are as follows: English Literature HL Biology HL Chemistry HL Psychology HL German Ab Initio SL Math SL Thank you.
  7. Heeeyy I just started my first week of DP 1, two days ago and I'm already doubting myself and I'm mentally stressed even though we haven't even done that much. Everything's just been a bit overwhelming. I have chosen the following HLs: Chem, Bio and English A Lit and SLs: Spanish, Math and Geography. I think what's giving me anxiety is Chemistry HL or just the idea of taking 2 sciences as HL. People are constantly telling me: "you're committing suicide" "You won't be able to get anything higher than a 5" "it's going to bring down your average". I think these comments are getting to my head, especially because my chemistry teacher is not the best teacher, so i'm also stressed that that will bring me down. I'm just hoping for a couple tips to help me get through the first term of DP1 Thank you
  8. Hi guys, So, I just had my mid years get over and I realized that my math paper went really bad. Note that I take Math HL. I was wondering if I can change my subject from Math HL to Business Management HL. Also, I plan on studying medicine after passing so I was wondering if the change in the subject would affect university prospects and, apart from -medicine I also plan on applying for Pharmacy, Architecture, and Chemistry. My subjects are as follows- Physics HL Chemistry HL Math HL English A- Language and Literature SL Business Management SL French ab initio SL. I was wondering if universities will say anything if Hl Math is switched with Business. PS- My exams are in May 2018
  9. Hi, this year i'm going to enter grade 11 and start my IB diploma program. I am aiming to study petroleum engineering in the future since i am great at chemistry. I was wondering if you can give opinions on 3 of the 6 subjects i have taken. Chemistry Hl, Physics SL, ESS SL. I am still not sure about the ESS... should i go for business,economy or even Design and Technology instead of ESS? All of these subjects are somehow useful. Thanks for reading.
  10. I currently have an idea for my chemistry IA, but I can't find any previous lab work done on this specific topic. My topic is: What are the effects of the rate of reaction of sodium bicarbonate when combined with different pH levels of acids OR To what extent is the amount of CO2 collected from a sodium bicarbonate reaction affected when combined with different pH levels of acidity. Which topic should I pick or should I just scrap what I have and find another experiment.
  11. Hey guys, so I am doing my Chemistry IA on enthalpy changes of alcohol.. and so I was like half done my experiment (collected data) when I came across an IA topic researching exactly what I am researching, like my introduction, background info are different but our methodology to carry out the experiment is the same and data processing method is the same.... I was wondering is it okay to carry on? I still have my own original data, original background information, original introduction...its just our method to carry out the experiment and the way to find out the calculations is the same....... shall I carry on with my IA? please do let me know if you have any input on this, thanks.
  12. Hello all, I take chemistry HL and I need a topic for my chemistry IA new syllabus. I have suggested two ideas for my supervisor but he said they are not good. He said that the expire meant should deal with a broad topic and have qualitative data( the one with calculations) he emphasized on the point of the experiment having calculations. And he said it should relate in someway to daily life, it's good to do about food, water , cosmetics, detergins.... Any suggestions for topics???? The two topics he refused and said we're not good are: 1. The effect of temperature on the acidity of lemons 2. Something dealing with zinc half life
  13. Hi! I'm almost done with my Chemistry EE and although my EE supervisor says it is fine, I feel very doubtful about it. Although I can't post my EE here or share it with anyone for plagiarism reasons, I'd like to briefly talk with any IB teacher or IB graduate out there about my EE. Please message me. Thanks in advance!
  14. HELP! I've just started Junior year, so IB has just kicked off and we have 2 weeks to change our courses if we wish. I have always been sure that I want to do 2 Sciences, first I picked Bio and Chem (both HL), then I changed my mind so I decided to do Bio and Phy (HL) because I've always loved physics. But now I am starting to change my mind again, because I've read that Bio and Phy aren't the best combination and I feel like with those classes my college majors all of a sudden gets way more limited. Help! Should I stay in Physics or change back to Chem??
  15. Hi Im considering taking Chemistry as a subject in IB because I am yet to start school but I am not too sure about it as I did not take Chemistry as a subject for my IGCSE/GCSE. I wonder what you guys think about this and it would be really helpful if i could have a general comparison of chemistry as a subject in IB and IGCSE Thanks a lot
  16. Does anyone have chemistry p1 or p2 questions specific for a certain topic in chemistry? I mostly have past papers but as I have not yet studied all the chapters in chemistry, I have a hard time trying to answer to the questions that combine knowledge from multiple topics If someone wants, I can send 95 questions with specimen answers related to Energetics and Thermochemistry
  17. So I have this idea for my chemistry IA that I'm not sure of. I want to compare and contrast the effect of the different ratio between baking soda and acid vs. the amount of baking powder on the height the cake after baking. Baking powder is a mixture of baking soda and another acid that reacts when mixed with wet ingredient; it is used to make a cake "fluffy." I want to see if baking soda + acid will have the same effect as baking powder and how different amount of it will affect how much the cake rises. Possible variables: Independent- the ratio between baking soda and an acid + amount of baking powder (the total mass of baking powder and acid will be constant, and the mass of baking powder will change) Dependent- The height of the cake after baking Control: size of the mold, the amount of ingredients for the cake (flour, water, oil, etc.), baking temperature & time, amount of batter before baking, type of acid, type of baking powder, type of baking soda. The problem with this idea is that there are too many variables that can influence the result of the experiment. For example, how it is mixed, placement in the oven, spread of the batter etc. Will this be a good topic to do? Is there any way for me to control these variables? Or change some aspect of it to make it more controllable?
  18. Hi! I’m currently doing my IB Chemistry EE with the topic of Anaemia I’m investigating the effects of putting iron objects in food while cooking to see if that raises its iron content. I got the idea from http://www.luckyironfish.com/ a project started a couple of years ago to treat anaemia in Cambodia. I’m having trouble with a research question for this, as I don’t quite know what to focus in on. I thought I’d try to replicate the experiment with just a piece of iron; placing iron nails in a pot of water to see if the iron content would go up, and do my EE as an evaluation and comparison of both the Lucky Iron Fish and ordinary pieces of iron But the one dead end I had was that I didn’t have a way to measure the iron concentration of the water. I thought what I would do is pump the water with air to make Ferrous (II) oxide, as Fe II is the best absorbed form of iron. Then I would use colorimetry to measure the concentration but I need at least one sample of FeO with a known concentration so that I can perform the calculations. What are your thoughts on this, and are there any other ways to find the concentration of Iron?
  19. My subjects are English Lit HL French SL Economics HL Chemistry SL Maths SL Biology HL all my teachers are telling me not to do the EE in their respective subject because it's too difficult, too much stress, marked harshly etc. Which is a bit disheartening because I have no clue what to choose. We have to put in two preferences (2 subjects), so I was wondering what you've heard/experienced doing an EE in these subjects. Any opinion would help so much!!!
  20. theoretical ia

    So I have to do a theoretical IA in chemistry since I kind of screwed up with my practical one... I am in chemistry SL and this is a kind of hard situation for me as I don't really have any idea what I want to write about and the full draft is due 27 August 2017. My teacher gave me some sources in the form of databases but to be true I am not that good in chemistry. I take chemistry SL which may save me. Anyway if anyone did a theoretical IA in chemistry I would be very grateful for any tips.
  21. Hi, So basically for my IA, I'd like to do something to do with glow sticks and the kinetics of it and based on the website below it says I can plot ln(light intensity) vs. 1/T. Could anyone point me in the right direction in terms of this/verify that this is correct? I've never heard that you can plot ln(light intensity) vs. 1/T and I've been unable to find any other experiments that do this? Any help would be appreciated, thank you! http://www-chem.ucsd.edu/undergraduate/teaching-labs/demos/demo16.html
  22. Does anyone have any advice on how to write scientifically for the IAs as I am been told that my language is too informal? Thanks!
  23. Hello, guys! I hope that you are all doing great after the results day. I am thinking about requesting remarks in the following subjects: Dutch A: Lit SL 6 ( 3 points away from a 7) Biology HL: 6 ( According to the component grades, I had 79.6% whereas the upper-grade boundary is 80%) Economics SL: 5 ( 61.6% whereas the upper-grade boundary is 63%) Chemistry HL: 5 (61% whereas 64% is a 6) Other questions: 1. For Lang A: Lit SL, is Written Assignment also remarked (I had 19/25)? 2. For Bio, should I just pass the 80% mark (e.g. with the additional 0.5%) in order to get a 7 or I need 81%? I would really appreciate your help. Thanks! P.S. I am still waiting for some of the component grades (Dutch and Chem)...
  24. Hi, I am thinking about which IA topic I should choose for Chemistry IA. Our teacher gives an emphasis on doing something very original, but I just cannot find a unique topic. Is originality really of such importance, or is it important to do a complex topic and make an excellent report out of it, without inventing some new approaches, procedures, using unique materials, etc. Thank you!!!
  25. I am planning to examine the effectiveness of sunscreen in aquatic biota but I am stuck on how to do the experiment and make it quantifiable. I know that using spectrometer will help this experiment, but I do not know how to test the effectiveness of sunscreen in water condition. If you have some idea, please let me know! Thanks.