FREE O Level Chemistry Exam Questions & Answers (Topical)
01 Mar
Posted by: sean in: Chemistry Notes & Tips
After communicating with several students, i realised that many come to his Chemistry blogsite to look for more F-R-E-E O Level Chemistry Questions and Solutions/Answers. In fact, you can find them at “Chemistry Notes & Tips” under CATEGORIES on the right hand side column of this blog. Seems like many students are not sure how to find the topics of their interest.
I have decided to put up a “NAVIGATION VIDEO” on this blog to teach all readers how to maximise their learning in this blog. Stay Tuned for it!
Meanwhile, if you are looking for specific O Level Chemistry Topics, check the following links for wealth of information and tips:
- Atomic Structure
- Kinetic Particle Theory
- Bonding & Structural Properties
- Balancing Chemical Equations
- Mole Calculations
- Rate of Reaction
- Periodic Table & Group Trends
- Energy Changes
- Redox
- Electrolysis
- Metals & Reactivity Series
- Organic Chemistry
- SPA / Chemistry Practical Tips
Hope this helps you in learning Chemistry and scoring the grades you desire.
PS: Drop me a comment, i would love to hear from you. =)
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4 Responses
SimpleChemConcepts | O Levels Chemistry Tips Blog Marathon - Part I
24|Apr|2009 1[...] that, please check also the blogposts that i have discussed in 2008 on O Levels Chemistry Exam Questions & Answers (in topical basis). Again, this contains archives (older blogposts) on questions that were discussed for the 2008 [...]
saba
14|May|2009 2what’s the color change at da end of a titration experiment with fe 2+ ions and potassium manganate? explain please!!
Reply
sean Reply:
June 2nd, 2009 at 1:33 am
Hi saba,
Although titration is carried out in this example, this chemistry question should be placed under the chapter of “REDOX: Reduction & Oxidation”.
Fe2+ are very good reducing agent.
KMnO4 is commonly used to test for a reducing agent.
In this case, KMnO4 change from Purple to Colourless.
Hope this information helps.
To Your Academic Success in Chemistry,
Sean Chua
Master Trainer @ SimpleChemConcepts.com
Author of Up Your Chemistry Grades Now! book
Reply
Ray Seow
05|Sep|2009 3I guess we have to say ACIDIFIED potassium manganate(VII) in order to have the colour change from purple to colourless. In neutral or alkaline condition, brown precipitate of manganese(IV) oxide, MnO2 is obtained instead.
Reply
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