Chemistry2009

specimen papers for pure chemistry

2009-08-16T05:14:00.000-07:00

Dear students,

These are the links to specimen paper that some of you have asked me to upload. I have uploaded another year paper for your practice.

Prelim2002P1.doc
Prelim2002P2.doc
Prelim2003P1.doc
Prelim2003P2.doc

Electrolysis worksheet answers

2009-04-02T00:04:00.000-07:00

Hi all,

These are the answers to electrolysis worksheet given out during holidays.Please clarify your answers if need be. Thank you.

http://www.4shared.com/file/96321860/31c41cf1/Answers_to_electrolysis.html

Answers for speed of reaction worksheet

2009-03-26T21:49:00.000-07:00

Dear students,

Below is the soft copy of answers for speed of reaction for your reference:

http://www.4shared.com/file/95226777/da840eaf/Speed_of_reaction_worksheet_answers.html

Prelim paper set A

2009-03-05T06:27:00.000-08:00

Dear students,

I am attaching the first prelim paper for your practice. Once I have most of the class emails, I will upload the subsequent papers into the wiki link.

Please try after you have revised the topics instead of before so that you can gauge your understanding better.

http://www.4shared.com/file/91240774/1de9d17a/Prelim2002P1.htm

http://www.4shared.com/file/91240868/618eb2d/Prelim2002P2.html

Assignments to complete and things to bring for March holidays lesson

2009-03-04T19:29:00.000-08:00

Dear students,

Please complete the following assignments before reporting for the March lessons.

1. MCQ on speed of reaction
2. Graphs on effect of concentration on speed of reaction.
3. structured questions on speed of reaction

Please bring your workbook (if you have it with you) or the assignment on redox that was assigned to you earlier as I need to go through the data-based question.

Other things to bring:

1. ammonia notes and worksheet (I will go through questions that you can't do)

2. speed of reaction notes and worksheets

Chapter: Heat changes

2009-03-04T16:58:00.000-08:00

For this chapter, you may wish to look through the link provided below:

http://studio4learning.tv/sciences/chemistry/heat-in-chemistry/enthalpy/

Remember to refer back to notes and textbook when in doubt.

Chapter: Electrolysis

2009-03-04T04:34:00.001-08:00

At the end of the lesson, you should be able to:

Describe electrolysis as the conduction of electricity by an ionic compound (an electrolyte), when molten or dissolved in water, leading to the decomposition of the electrolyte
Describe electrolysis as evidence for the existence of ions which are held in a lattice when solid but which are free to move when molten or in solution
Describe, in terms of the mobility of ions present and the electrode products, the electrolysis of molten sodium chloride, using inert electrodes
Predict the likely products of the electrolysis of a molten binary compound
Apply the idea of selective discharge based on
(i) cations: linked to the reactivity series (see 9.2)
(ii) anions: halides, hydroxides and sulfates (e.g. aqueous copper(II) sulfate and dilute
sodium chloride solution (as essentially the electrolysis of water))
(iii) concentration effects (as in the electrolysis of concentrated and dilute aqueous sodium chloride)

(In all cases above, inert electrodes are used.)
Predict the likely products of the electrolysis of an aqueous electrolyte, given relevant information
Construct ionic equations for the reactions occurring at the electrodes during the electrolysis, given relevant information
Describe the electrolysis of aqueous copper(II) sulfate with copper electrodes as a means of purifying copper (no technical details are required)
Describe the electroplating of metals, e.g. copper plating, and state one use of electroplating
Describe the production of electrical energy from simple cells (i.e. two electrodes in an electrolyte) linked to the reactivity series and redox reactions (in terms of electron transfer)

Electrolysis PPT

Chapter: Ammonia

2009-03-04T04:15:00.001-08:00

At the end of the chapter, you should be able to:

Describe the use of nitrogen, from air, and hydrogen, from cracking oil,in the manufacture of ammonia
State that some chemical reactions are reversible, e.g. manufacture of ammonia
Describe the essential conditions for the manufacture of ammonia by the Haber process
Describe the displacement of ammonia from its salts (LINK TO REACTIONS OF ALKALI)

Ammonia PPT
Ammonia Worksheet

chapter: redox (textbook qns answers)

2009-03-02T07:59:00.000-08:00

redox answer

Sec 4 Love

2009-02-22T07:48:00.000-08:00

Review of SPA mock assessment:

Spa skills to note of.doc