Experimental Sciences
Discussion of Sports, Exercise & Health Science, Design Technology and advice on which science to take (if more than one science is asked about, ask here).
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I'm not sure about you, but I find doing the uncertainty calculations a giant waste of time. Soo, I quickly coded an application to automate it for you http://timtamshiz.co.cc/ http://ibsurvival.com/uncertainties/ It's pretty straight forward to use, but I'll eventually be modifying it to let you use whole formulas Anyway, enjoy, and if you have any requests for features either PM me or reply here . edit: Oh awesome, it got stuck, thanks to whoever did that. I'll let you guys know when I update it.
Last reply by chandrikagowda, -
- 0 replies
- 3.8k views
Here are the links to the notes and sample works for Group 4 subjects that we have on our Files archive. To be able to download files, you have to be a VIP member or a VIP subscriber. Please see the FAQ for information on how to become a VIP or how to buy a VIP subscription. If you want to donate and contribute files to our archive, please see this announcement or this FAQ section. Science Group 4 Project Biology Chemistry Physics
Last reply by Survival Robot, -
- 10 replies
- 4.9k views
There’s been multitudes of new threads discussing one science vs another. HL vs SL, this vs that, no one knows what science to do because one’s easier than the other, or one has more interesting concepts to you, yada yada. Hopefully this thread will help those who are choosing choose the science they want to do or even need to do and what level they should probably do it on. It’s a long read but if you have a general idea of what you want to do already you can always just skip to those parts I’ll also discuss some of the combos people like to do since I’ve taken all 3 sciences, Chem and Bio at HL too so this should hopefully be rather thorough. Before the descriptions…
Last reply by ashleigh7, -
- 5 replies
- 1.2k views
Today we had a planning lab in Biology on enzymes and how they are affected by temperature changes. Took 3 hours to do, the teacher helped everyone out and we all followed the method to the letter. Yet none of our results fit the hypothesis that we all knew to be true (i.e. enzymes above 40 degrees are denatured and don't break starch down, same thing for enzymes at 0 degrees). Seeing as we were all pissed off at having wasted 3 hours for nothing, and there having been no real reason for the failure (the controls worked when we tested them before starting and the amylase was fresh, out teacher even prepared it twice for us), our teacher gave us free rein to forge our r…
Last reply by Solaris, -
- 3 replies
- 1.3k views
Hi guys, I was just wondering when to know when the data you have collected experimentally is normally distributed. Is there a method that exists, to show whether it is in Gaussian Distribution? EDIT: I have 4 groups , each with 5 trials -- if that helps at all In my IA i want to use the t-test, however the condition is that the data has to be normally distributed, soo I don't know where to go Thanks!
Last reply by kiwi.at.heart, -
- 2 replies
- 1.1k views
Hi all, I am currently writing a Design Lab for a Physics Lab Report. The aim of the task is to dip a resistor in a calorimeter filled with Deionized Water and measure the heat energy by the temperature rise in the water. The issue I am facing is whether I can actually obtain Deionized Water. Is it possible to make Deionized water in a school lab? If not, are there any alternative methods anyone could suggest to measure the heat energy of a resistor? Are there any alternatives to water, that I could use in the calorimeter? I need this information before Sunday!!!! Thanks in advance!
Last reply by turtle turtle, -
- 4 replies
- 1.2k views
Hi so im in grade 10 right now and I have to pick my courses for IB soon. I want to attend university somewhere in the UK (for medicine) and I was looking at the requirements and they require you to take HL bio and HL chem. (I'm taking grade 11 physics next semester) My school discourages taking 2 HL sciences because they said it would be too hard How hard is it? Is it manageable? Would it be possible to get a level 6 or 7 in the course? (I have a 90% in science right now) Do you regret taking it? Thanks!!!
Last reply by A.W., -
- 1 reply
- 788 views
I was just wondering whether doing two HL sciences is recommended (I'm thinking of choosing HL Chem and HL Bio? It seems very content heavy. Does anyone have any experience with it? Thanks
Last reply by ellie, -
2 HL Sciences
by SCR- 16 replies
- 6.5k views
So I have been thinking about applying for IB and I really would like to do it. I want to be a dentist or get into med school after I am done with high school. Currently I am in grade 10 and I have registered for only gr 11/12 CERTIFICATE. I dont want to do diploma because it involves commiting so much..CAS, EE, etc and I would rather focus on doing IB on the subjects I enjoy. I applied for: HL biology HL chem HL pyschology (I can only take 3 or less HL subjects). Right now I'm having a lot of trouble with the courses I chose.. mainly everyone is telling me doing 2 HL sciences is suicide (or something along those lines) but I do enjoy science, I'm just nervous with everyo…
Last reply by racerocks, -
- 4 replies
- 1k views
Okay so I have a bit of a dilemma. I'm doing the IB diploma next year and I've decided to do 2 sciences since Im interested in possibly going to UK unis. So I took IB Chemistry HL and IB Biology HL. So here's the problem, I can do both sciences in year 1, but not in year 2. My coordinator said that taking both sciences might not happen since both of the sciences are during the same hour and there might not be enough students signed up for it. Should I stick to 2 sciences or take IB psychology as a 6th subject ? Oh and I'm new to this site.
Last reply by agirl3173, -
- 1 reply
- 740 views
Does any one have the sciences specimen papers for 2009? I known that our teachers already have them and probably our mock examinations are going to be on those papers.
Last reply by ok31, -
- 3 replies
- 1.2k views
As I was roaming through the internet one day, I came across a news article saying that there will be a syllabi change for IB group 4 in 2014, that is, the coming students next year (also the ones taking their exams in 2016). Since I fall under this list, I would really like to know whether that this information is true or not. However, another day I came across the Wikipedia page (I know I know, Wikipedia is not always reliable, but it's there, there's a possibility, even if it is really small, that the information might be true) saying that the syllabi don't change until the start of the school year 2016. I am really confused now. Please enlighten me whether if the s…
Last reply by elaifyanre, -
- 1 reply
- 1.6k views
Im taking ib next year and im thinking of applying for psychology or neuroscience. Which one will be more helpful?? Although i know that 2science hl is a must for neuroscience. However, i currently get better grades and social science subjects than experimental sciences. Which subject choices have a higher possibility of getting better marks in general? Economics. Psychology and Biology as HL or biology. chemistry and Geography as HL with math eng a langit and spanish b as SL Thank you
Last reply by cluelesskidd, -
- 9 replies
- 1.3k views
OK, so I've chosen 3 HL sciences (Bio, Physic, Chem) along with English SL, Math SL, History SL, and Spanish SL. Now, you may have noticed I would need another higher in order to obtain my diploma. Hence why I'm here. For starters, Spanish and History cannot coexist in the timetable in my school, meaning I would need to change Spanish to French. Here I could kill two birds with one stone by taking French B HL. I could also take take French AB Initio and take English HL, however I like my English teacher so I'd rather not. My final option is taking one of the sciences SL and rearranging myself from that point. What do you guys recommend?
Last reply by Haddit, -
- 1 reply
- 859 views
I may be doing 2-3 sciences for sophomore year. Current sophomore schedule: Algebra 2/Precalc honors Pre IB English 10 Ap U.S Gov and Politics Ap Physics 1 Ap Biology (a class for Juniors and seniors, but I have done really well in Biology Honors, so I am able to take it) Chemistry honors (will hopefully help with Ap Biology) Pre IB Spanish 3 (only class that is not weighted) Yup.... There is no off period for me, so this will be a tough schedule. I am also doing sophomore soccer, and plenty of extracurricular since I want to go into an ivy school. I have a passion for the sciences, but is this schedule a bit too hard…
Last reply by TheNintendoChip, -
- 2 replies
- 822 views
Hi For my Biology IA Lab report i did the pill bug expiration with two debris dishes. I used two different yellow and blue light. I cant come up with a good research question. My last one was Research Question: Between the light rays of blue and yellow, what is the pill bug favorite light color according to their living needs. In this lab we had to record the number of pill bugs present in each dish every 30 second and see which side do they prefer. They usually want danker sides and hate light and heat in general because light damages their breathing systems.
Last reply by Emmi, -
- 3 replies
- 900 views
Hi there, I have an absolute error question, regarding a chemistry lab report: I used a spectrophotometer which gives the absorbace with three decimal places (i.e. 1.234). The absolute error for this apparatus would be + 0.001 or half the last unit measurable, therefore + 0.0005? Thank you!
Last reply by Moma, -
- 8 replies
- 1.1k views
I was informed of my IA grades yesterday, and my motivation completely died, to be honest. I didn't think I was doing that badly, but I was apparently wrong. Anyway, I'm doing Chemistry SL and my IA score before moderation is 32 points. I guess this could be raised or lowered a point or two, but I don't count on it. As I understand it, this is a weak 6 when converted to the final scale. This disappoints me very much, because I've been aiming for a 7 now that I'm doing it at SL. But I guess this is what I get for trying to do too much in IB1... So my question is whether it is worth to still study ambitiously. Would I have to have perfect scores on every paper in May …
Last reply by master135, -
- 29 replies
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Will Taking physics, chem and bio HL be wise? I want to get into medical school..
Last reply by ananya.agrawal95, -
- 3 replies
- 995 views
Ok i am just wondering the significance of a lab for a group 4 science subject because atm, my best mark for my physics lab is: Design- C,C,C, Data Collection- C,P,C Conclusion- P, P, P (=.=;; and i have 1 more and it is the last lab writeup for the year, so i'm wondering if i end up getting Design- C,C,C, Data Collection- C,P,C Conclusion- C,C,C how much of an effect will my P,P,P in conclusion affect my IB mark? oh yea also, how much of a role does a lab play in the final ib mark? For ex, can i have a 5 for my lab and get a 7 on my exam and come out with a 7 overall?
Last reply by moneyfaery, -
- 0 replies
- 794 views
Hey, Does anyone know whats an antenna complex? I mean - is it just an abstract term describing the particular arrangement of the pigments inside a photosystem or is it that photosystems are special kinds of antenna complexes or maybe it is the name for each pigment connected by a pigment-binding protein. I cant get that although, and I've been searching for some time now
Last reply by Hinuku, -
Any general tips on completing the chapters before the finals?
by Guest Jar Jar D'oh!- 1 reply
- 831 views
Hey guys! How's IB Prep going? What I'd Like to know is what way to covering the entirety of our fat IB text books that you are going to utilize before the final exams. Well so far I'm thinking read each chapter and make notes, but I'm looking at other ways since notes never come out perfect and you need to revisit the chapter at times and the notes just don't do the trick for you. Oh, my subs are HL: Chem, Bio and SL: Phy. So please, help me out, Thank you! For all you know this might help you too!
Last reply by timtamboy63, -
- 38 replies
- 4.2k views
I'm looking for people who would like to join me, and compile notes based on syllabus... I'm sure it will help A LOT of people, so that we can all survive IB?
Last reply by timtamboy63, -
- 5 replies
- 997 views
I wanted to ask are there any university courses/universities that require you to study 2 HL sciences, and the 2 sciences I'm considering taking is physics and chemistry and in university something related to those science subjects.
Last reply by IB`NOT`ez, -
- 3 replies
- 858 views
For Biology SL, we did all our DESIGN labs in class time for some reason whereas in CHEMISTRY HL, we got to take them home. I personally do a lot better on labs I get to do at home. Is there an IB rule regarding design labs? I found nothing of that sort in the curriculum document...
Last reply by 1-2-3, -
- 8 replies
- 1.5k views
How long had you been in IB when you started to do assessed labs?
Last reply by Chesire_Cat, -
- 3 replies
- 1.5k views
Hey guys, I'm confused about the average mark that people get on labs. My friends and I last semester would always get around 8-9 marks out of 12. Is that good? If you want more details about where I lost the marks, I don't remember and the school keeps them under file.
Last reply by Entreri, -
Best option?
by Will- 3 replies
- 1.1k views
So, recently we've been introduced and given a summary of the DP program. We have been looking though the classes to take next year when we start DP, and I'm having a little trouble choosing which science I should go into for HL. The classes I can take are as follows (In order of preference). Biology: I like Bio, It can be really boring on occasion; I don't love it, but I don't hate it either. Chemistry: Chemistry is ok... The teacher I had for it (who most likely will be next years HL Chemistry teacher) made it very boring. I never really had much motivation for that class. I did well, but I didn't really grasp some of the important parts, like balancing equations. Phys…
Last reply by Marco Lee Solano, -
- 5 replies
- 1.9k views
Hi, I am planning to take all 3 sciences HL, and I was wondering which textbooks would be best. I'm thinking either the Oxford or the Pearson Baccalaureate. Thoughts?
Last reply by Rigel, -
- 4 replies
- 1.4k views
Hi, i was wondering if you could help me with this. let's take this as an example: i want to determine the enthalpy change for the reaction between copper sulphate and zinc. and the lab is a design lab. what can i write for the variables? what are the independent variables? dependent variables? constants? can you help me with this? i have some problems with variables. thanks...
Last reply by x___x, -
- 3 replies
- 1.1k views
Hi everyone, im starting the dp next year and ive received some summer work from my school. Some of the stuff seems a bit confusing and stuff ive never really covered in last years science class like drawing the strucutres of different molecules like glucose, glycerin,etc and describing how monosaccharide (glucose) is converted to a disaccharide (maltose). (Honestly, I dont even know what that means lol). Ive received my Bio and Chem textbooks early and I have been reviewing some content before school starts in September. What are some useful stuff that should be mastered and learned before someone starts in DP? Thank you.
Last reply by cricketcrazynerd, -
- 4 replies
- 1.1k views
Since I'm taking both chemistry and biology, I get confused on whether I should treat the uncertainties in the same way. In bio lab reports, should uncertainty be propagated too? Or do we only put uncertainties in tables and graphs? And do we take the smallest division of a lets say the cylinder used? Or one tenth of the smallest division like we do in chemistry?
Last reply by IBdoc, -
- 2 replies
- 705 views
I have HL bio and Chem. For next year, we have 2 free slots for classes. I have noticed a trend that most of the exams for HL group 4 subjects, overlap the material. Physics material usually is involved on the Chem exam, and some will go as far as to say they couldn't have solved the chem problem without the help of their physics class. My 2 class options: Environmental Science AP or Physics Honors/traditional/AP (not sure what the school will decide to do). I already took physics in pre-IB: and we only touched upon vectors and projectile motion. It was more conceptual, rather than problem solving. Should I even waste my time to go as far as taking onlin…
Last reply by Alfabeta, -
Bio HL or Chem HL?
by Guest juliaib- 10 replies
- 1.3k views
I'm in my first year of IB and I'm changing schools. Currently I'm doing both HL chem and HL bio, but at my new school I get the option of choosing one of the two. I'm a student who genuinely dislikes the sciences and you might wonder why I'm doing two of them currently and that's because I had no other choice. Anyways, I just thought it would be helpful to hear other people's opinions on this. Basically, a. which is easier? b. which is more suited for a humanities person? To help steer your recommendations I think it's useful to know I've only taken a year of each before starting the IB programme. Bio I did in ninth grade but had a really good teacher and cover…
Last reply by anotheribkid, -
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- 1 reply
- 841 views
Hello fellow sufferers, right now I am facing the GREATEST dilemma. I am starting the IB programme in September and have thankfully already decided on my SL subjects (World Arts and Cultures, Greek, English A Lang. & Lit.). I have also decided to take Math HL and Physics HL (both of them are requirements for undergraduates wanting to study Physics or Engineering). So now I have to decide on whether to choose Biology or Computer Sciences on HL. My parents do everything they can to get me to choose Bio, although both of them know I would be better in C.S. And yes, I do have a more positive feeling on C.S., but I know that Bio will be useful if, over the next couple…
Last reply by thecsstudent, -
- 2 replies
- 1k views
Hi, I wanted to get everyones opinion on if I should switch from Bio HL to Chem SL. 1. I'm already taking Geo, History, English at HL 2. My math and memorizational skills are poor 3. I struggled with balancing equations and whatnot in 10th grade so I choose Bio, however I want to know if the addition of another HL workload will hurt me more than brushing up my chemistry skills. Thanks in advance!
Last reply by lonesoldier, -
- 6 replies
- 4.5k views
Hi, I'm in Year 11 right now, and going to be choosing IB subjects in a week or two, and I've so far comprised a list of HLs and SLs, but I'm not so sure about which lab science I should take. HL: Computer Science, Business & Management, English Lit Lang, Phys/Bio SL: Math, Mandarin B University I 'aspire' to be in, is MIT (Massachusetts Institute of Technology), (I don't believe that I need a HL in math, I've got quite a history with computers so far (8 year old programmer), and a lot of passion, certificates, and projects to back it up. But yes, I do realize it is quite a far off aspiration without HL math.) Bio It so far seems that I'd probably do better in …
Last reply by ChikkyD, -
- 0 replies
- 937 views
Hi everyone, can anybody tell me if there are any caffeine solutions of known caffeine content that I could use for my bio IA-thus, I would need to know how much does caffeine does some caffeine solution contain without carrying caffeine tests.
Last reply by IBlearner73, -
- 0 replies
- 1.2k views
Hi, I should be pilot testing by now but I am still planning my IA now, and I was thinking to do about the effect of temperature on yeast respiration (C02 concentration). Since I live in Japan, I thought I could use 'Miso', which is fermented soybeans used mostly for soup. And I would like to prepare 5 temperature of water bath (10,20,30,40,50) and do 5 trials for each test to see the change in the rate of respiration using cO2 censor. However, the problem is that there are lots of factors that affect yeast respiration such as: 1. O2/Co2concentration in atmosphere 2. pH 3. Water Content 4. Mount of respirable material My IV is the…
Last reply by UEhon, -
- 8 replies
- 1.5k views
Okay, so I need help deciding which class to take in conjuction with IB Physics next year: IB Bio or IB Chem. I love all types of science, so this is a hard decision for me, but I have to make it soon considering school is starting in 3 weeks. I have an interest in both bio and chem, so here is some more info on my background. Last year in science research, I conducted a project correlating ionospheric waves patterns to weather disturbances. I recentley attended a biotechnology summer camp, and conduccted research relating to the genetic link to autism. I am currently interested in furthering my research in autism. In school, I have take both honors bio and honors chem. …
Last reply by Stereoisomer, -
- 8 replies
- 1.7k views
Hey all, I'm doing IB next year but I'm not too sure whether to go with Bio SL or Chem SL. I get really good grades in both subjects~ I only plan to do one science and so it'll be between Bio and Chem SL (I hate Physics) Suggestions would be really helpful and state why!!!
Last reply by Andyboi, -
- 5 replies
- 1.7k views
Hi! I've been thinking lately about either having Biology in HL or Chemistry in HL. I am not quite sure what I want to study after the IB, but I was thinking about something with pharmacy/medicine, business or law (And I do know that neither the two last mentioned require Chemistry or Biology.. Or do they??). I would say that I am kind of good at memorizing, and my mathematical skills are average (I'm taking Maths SL). So the big question: Which is more beneficial for applying for universities?
Last reply by spacescampi, -
- 6 replies
- 7k views
do i have to take both Biology HL and Chemistry HL if i want to study medicine? would it be to hard? so maybe i should take chemistry sl? this is what i would take: english hl, biology hl, chemistry hl, history sl,french sl, math sl or english hl, biology hl, history hl, chemistry sl, french sl, math sl also i would have to do a 3/4 year science degree before med school, so maybe it is not necessary to take Biology and Chemistry at HL.??? thanks so much!
Last reply by 1-2-3, -
- 0 replies
- 1.1k views
Hi! I'm in Grade 11 and I'm having a little bit of a crisis about my HL subjects. I'm highly interested in both biomedical engineering and medicine as future career options, but I don't know which combination of science HLs I should take in order to increase my chance of success in these fields. Currently, I'm taking Biology and Chemistry in HL, but I'm wondering if I should switch my Biology to Physics HL while the missed workload from Physics is still manageable, even though the thought of dropping Biology pains me. I've been deeply passionate about science all my life and scored consistent 7s and 8s throughout the MYP (though I'm well aware DP is incomparably…
Last reply by fullsun, -
- 2 replies
- 816 views
Hello everyone, just a quick question concerning my Biology IA. I am doing HL and my school set a deadline for the final draft of our Bio IAs for Tuesday. Is it true that the page limit is 12 pages????? And if so, does that include the title page and/or appendix?? All my raw data tables are in the appendix and they are massive. So far, I am 3 pages over..... Thank you soooo much for your help and advice in advance!
Last reply by isabel99, -
Biology IA Yeast Help
by Guest- 2 replies
- 4.5k views
After failing two IA experiments, I have one more week to finish the experiment that my teacher chose for me: expansion of dough. I tried to make the dough mixed with yeast with following this recipe: 2 grams of all-purpose flour 1.4 ml of distilled water I am varying instant yeast concentration (0.05, 0.1, 0.15, 0.2, 0.25) and temperature (room temp, 30, 40, 50, 60°C) I tried doing it without sugar but the time taken is wayyyy too long I want to add sugar to the dough but should I? And also, how much sugar should I add?
Last reply by Xavier, -
- 2 replies
- 1.2k views
Hey guys, as I'm doing my data analysis, I'm confused about the number of statistical tests I can perform and not lose marks. So, I have these tests/values:min, max, mean, standard deviation, rate, change and % change. Is this too much? Can anyone give me any opinion/advice on this please?
Last reply by IBlearner73, -
- 1 reply
- 799 views
our biology teacher is making us decide on what we what to do our biology internal assessments from now, so that they would be ready by the beginning of next year. but i have no clue on the topic i should pick, any suggestions?
Last reply by Emmi, -
- 5 replies
- 3.1k views
Hey guys! So Year 1 is right around the corner and I'm pretty excited but have recently ran into a problem. I've chosen physics SL for my Group 4 subject, but have recently considered switching to Biology SL since I've heard that it's less difficult. Is this true? Personally, I am quite decent at math and pretty good at memorising things. I have some background in biology (only the basics) and very little in physics. None of these are required for the University program I wish to attend (Econ/Business). I also dislike the sciences in general so I'd rather just choose the easier subject lollll. But I guess physics would be SOMEWHAT helpful since it's rela…
Last reply by Chirag, -
- 11 replies
- 3.8k views
I'm having a difficult time deciding between Biology HL and Chemistry HL. I have the opportunity to take both, both at HL or one at HL and the other at SL. I'm fairly well at Chemistry; it seems simple. However, Biology would probably be better suited for what I plan to study at uni (Psychology with possible intent for grad school). From what I heard, Chemistry is mostly mathematics while Biology is memorization. Is there anyone who could give a full comparison of the two subjects, preferably someone who took both or are in the process in taking both? Thanks.
Last reply by soadquake981,
