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tags ยป GCSE Level (5037)

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Hi there, Can you please help me on this question as much as possible. My aim of my coursework is to investigate the effect changing the concentration of Hydrochloric Acid has its rate of reaction with Sodium Thiosulphate. Please can you e-mail the answer or as much information as possible Thanks a lot Halora,London
(Could you please get back to me asap because i have an interim deadline for next week (monday 3rd) to get my plan done) Hi, im doing my GCSE Maths statistics coursework (Edexcel) on Mayfield High School Data. For children in KS3 and KS4, i have the following data: Year Group Surname Forename 1 Forename 2 Years Months Month of birth Gender Hair colour Eye colour Left/right handed? Favourite colour Favourite type of music Favourite sport Favourite subject Favourite TV programme Average number of hours TV watched per week IQ Height (m) Weight (kg) Distance Between Home and School Means of travel to school No of siblings No of pets KS2 Results English Maths Science I was wondering if you could tell me which line of investigation would be the best in terms of allowing me to show the most skills. I was considering doin height and weight or some similar continuous data. How would i go about writing an 'integrated' detailed hypothesis and what would i need to include in my plan and the project (especially in terms of statistical skills i.e. histograms etc to score highly? What is meant by the term 'regression analysis' and what is the formula i need to carry it out? Finally, are there any resources/sites which could help me with this coursework? Thank you so much for your help.
can you give me a brief introduction to osmosis in potatoes for a piece of coursework. is it any different to other osmosis?

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I did an experiment where I changed the concentration of hydrochloric acid to see how this would affect the rate of reaction. I reacted HCL with sodium thiosulphate. I kept the volume of sodium thiosulphate the same throughout each experiment (25cm3). I altered the amount of HCL and water: Volume of HCL (cm3) Volume of water (cm3) 1. 25 0 2. 20 5 3. 15 10 4. 10 15 5. 5 20 6. 0 25 25cm3 of sodium thiosulphate used each time. For my evaluation my teacher says i need to get more marks...please help! I got one anomous result. The results showed that as the concentration of HCL increases...the rate of reaction increases. I have to comment in detail on the reliabilty of the evidence, accounting for any anomalous results?????? Can you please name all of what could have happened in order for me to get the anomalous result?????? Please help...i really need the marks! Thankyou so much!
According to the AQA syllabus, to gain the E.6b mark on my evaluation i need to, "describe, in detail, further work to provide additional relevant evidence". What further investigation should i talk about to gain this mark and could you please explain how this is relevant . The investigation you suggest must be linked to Osmosis. THANKS FOR READING THIS! :)
ive just started my GCSE statistics coursework. im at a grammer school and am doing higher tier maths. for my statistics coursework, we are provided with all the figures and info but i have to do sampling and only use a small amount of the data. i want to do height against weight but how do i do the sampling? also am i meant to use a range of graphs? thanx byeeeeeeeeee A
I did an experiment where I changed the concentration of hydrochloric acid to see how this would affect the rate of reaction. I reacted HCL with sodium thiosulphate. I kept the volume of sodium thiosulphate the same throughout each experiment (25cm3). I altered the amount of HCL and water: Volume of HCL (cm3) Volume of water (cm3) 1. 25 0 2. 20 5 3. 15 10 4. 10 15 5. 5 20 6. 0 25 25cm3 of sodium thiosulphate used each time. I got one anomalous result. we only used a burette to measure the concentration of the HCL and water. Can you please help me with the evaluation... I have to propose improvements, or further work, to provide additional evidence for the conclusion, or to extend the enquiry. Please help me? Thankyou!!!!!!
i have just received my c/w for OSMOSIS with potatoes. i haven't got a clue of what to do, since i have started new to Double Science therefore i need help on this topic. How can i find information on the net? what websites? have you got any information that you can provide me with? thank you, Abdullah
hello I am REALLY stuck on ideas for my GCSE statistics coursework task. My teacher gave us a sheet of random ideas and said we can use primary or secondary data, but I dont really understand! I am not at all sure where to begin looking for data or what sort of data I should be looking for. I do not understand what we will have to do with the data either once we have found it. I hope you can help me and suggest ideas for my coursework or useful websites to find ideas. Please help!!!!!!!! thanks janiex
In my experiment I kept the concentration the same and varied the temp. I then timed how long it took for the cross to disappear. I have got 7 marks for analysis in this piece of coursework and I really want to get eight so what do I need to include in my work to get this mark? Thanks.
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