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March 24, 2007 at 4:43 am #1031
:Hi I really need help. I am doing chemistry for leaving cert through distance learning but I haven't done any of the experiments as I have no access to a lab. I've learned the theory behind all the experiments for the written exam but I'm worried an external examiner will ask to see a lab book with all the mandatory experiments written up. Where could I get the information I need to write it up, like the amounts of chemicals used etc? I don't want to fail because of this because I've studied hard. Any help would be great. Thanks
March 24, 2007 at 4:43 am #15343
Hi I really need help. I am doing chemistry for leaving cert through distance learning but I haven't done any of the experiments as I have no access to a lab. I've learned the theory behind all the experiments for the written exam but I'm worried an external examiner will ask to see a lab book with all the mandatory experiments written up. Where could I get the information I need to write it up, like the amounts of chemicals used etc? I don't want to fail because of this because I've studied hard. Any help would be great. Thanks
March 25, 2007 at 6:52 pm #15344
hiya, what textbook are you using?
March 25, 2007 at 7:29 pm #15345
Using chemistry live book.
March 31, 2007 at 10:38 pm #15346Anonymous
As far as I know external examiners don't usually ask to see lab-books. There are no marks being awarded for a completed labbook in the LC Chem course. So you won't lose marks and be penalised for not having this done.
That said I don't see how could be penalised for not preforming these experiments provided that you have a thorough understanding of them, but I'd ask a chemistry teacher just in case to give the lowdown.
The purpose of this part of the course it appears is to develop your understanding of the experiments through the process of preforming a write up.
"Many candidates attempted one or more “extra” questions suggesting that the examination paper does not present a problem vis-à-vis time. Many candidates attempted all three questions in Section A. This suggests that many candidates devoted time to the mandatory practical elements of the syllabus. However, there is some evidence of the possible omission or at least the placing of a low priority on some of the mandatory practical work (presumably because there was an unfounded expectation that they would not appear on the examination paper)."
To help answer section A
"Given the guarantee of three mandatory experiments in Section A and the likely reference to others within the remainder of the examination paper candidates should cover this mandatory experimental material comprehensively."
At higher level the examiners recommendations of the course included that:
"Particular topics identified in the report as ones where candidates showed consistent difficulties were:
-Comprehensive coverage of mandatory experiments"
Also at ordinary level a similar recommendation was made
"-Organic chemistry including the mandatory experiments"
The report concluded that
"-The specific comments made in relation to these topics within this report should be used as a guide to future candidates so that they do not repeat these errors.
-In relation to organic chemistry one mandatory experiment and at least one and a half other questions appear on the examination paper. It is therefore unwise for candidates to omit this portion of the syllabus.
-Past examination papers, the sample papers and supplementary questions which were issued prior to the first examination in 2002 as well as the examination papers for the last two examinations of the previous syllabus should be used as practice and as a guide to question lay-out and content."
However if you would like to know the basic structure of a write up here are some guidelines
Doing a Lab Write-up
A lab write-up form is a handy way to keep track of your progress at every step of an investigation. It’s also a useful tool for summarizing your results. On the next page you will see a copy of a lab write-up form. Look at that form while reading the following description of each category.
Looking at a Lab Write-up
Your lab write-up should be organized into the following categories:
A. Title: This is the name of the lab.
B. Objective: This is the purpose of the lab, which is usually either to answer a question or to test a hypothesis. The following is an example of each type of objective:
• How do erosion and deposition take place along a riverbed? (question)
• Erosion and deposition along a riverbed are predominantly caused by water. (hypothesis)
C. Materials: This section lists, in the order they are used, all the equipment, chemicals, or specimens needed to complete the investigation.
D. Procedure: These are the step-by-step instructions for doing the investigation.
E. Data/Observations: Record all the information you collect and all the observations you make here.
F. Discussion: This is where you explain your results and observations, and describe what you think your data mean or prove.
Use your data and observations to make inferences. Also report whether your hypothesis was correct or not.
Hope this gives you some insights (but check with a LC chem teacher just to be sure)
May 22, 2008 at 10:19 pm #15347
you should be fine so, I use Chemistry live and it has helped immensely to write up experiments but as far as I know these are not collected like they were for junior cert as they are rigourously tested on the exam.
May 23, 2008 at 2:05 am #15348
i use chem live aswel
bu i got d revision book that goes with it and i tink thats the best cos d expts in chem live r realy long winded!!
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