Thursday 29 January 2009

LC Chemistry Mock Exam 2009

Having reviewed the mock paper that you will sit next week, I have decided that it is only fair that I should alert you to the questions that as yet are still uncovered. I do not want you to waste any time entertaining questions that you simply cannot answer.

You have enough of your course covered now to allow a choice of 8 questions from the 11 offered.

All three practicals offered in Section A have already been covered. You may answer all three but must answer at least two.

Please remember the following:
1. Watch the marking scheme. Usually given in multiples of 3. Think of 3 marks representing one piece of information. Therefore a question offering 9 marks will require 3 points of information. (Not the same information given in three different ways so be careful!!)

2. Try in as far as is possible to accompany your answers with good sized pencil drawn labelled diagrams. Don't wait to be asked for a diagram. "Explain with the aid of a diagram..." means that you must give your answer in points of information and back them up with a diagram.

3. Chemistry questions can be answered in point form. Essay style answers are to be avoided at all costs!

4. Most of the more difficult chemical equations studied will be given on the paper. You must know how to read chemical equations and how to extract important information from them.

5. The only way you can get 0 marks is by leaving a blank space. Try everything!

5. We are not finished the course and we have not entertained any serious in-class revision of earlier topics yet so whilst the mocks serve a purpose they are not the end of the world.

As promised I have uploaded the solutions to all questions that are to be found in the workbook and in the textbook. They are in the 6th year folder and are simply called 'Tbook' and 'Wbook'.

Questions to be avoided.
Q7 (c)
Q10 (a) and (c)
Q11 (b) and (c)
This leaves you able to do all the following 8 questions: Q's 1,2,3,4,5,6,8,9.
You may choose to put any three parts from Q7(a), Q7(b), Q10(b) and Q11(a) together to make up another question if you should so wish. Do not hesitate to contact me by email on 'chemistry(at)knocklyoncs(dot)ie' if you have any questions regarding the exam or any questions on the subject matter as you are revising. I will do my very best to contact you with the solutions or the information you require.
Best of Luck!
Mr. O'Neill

Monday 26 January 2009

5th Chem - Boyle's Law and Charles' Law

Please study the following animations of each law in order to understand the results of the work of these two scientists.

Boyle's Law - Animation

Charles' Law - Animation

Both of these laws give their own unique constant and the two used in the combined gas law gives its own unique constant.

Monday 12 January 2009

Great Chem Website

For great revision cards and animation please visit the following site:
http://www.chemmybear.com/