Simple Chem Concepts - Experience Learning with a Difference

Dear readers,

Sean, the co-author for helping O Level students with Chemistry Concepts has decided to host all discussion on Chemistry Concepts on his new site
SimpleChemConcepts.com

You may continue to bombard all the Chemistry Qns to him. tsktsk.... and he will continue to provide power tips which will ease your understanding in acids-bases-salts, mole concept, bonding etc....

We look forward in your continued support !

Cheers,
alwaysLovely on behalf of Sean

O Level Maths for Singapore Students

Hello everyone,

I have decided to host all tips, notes, strategies, learning tools etc.... on this site
http://www.singaporeolevelmaths.com

Yes! Specially created for Singapore students who are taking either their O Level A-Maths or E-Maths, parents who are cheering for their children in this national examinations.

See everyone there!

Cheers,
alwaysLovely

Are you right or left brainer?

THE Right Brain vs Left Brain test ... do you see the dancer turning clockwise or anti-clockwise?

If clockwise, then you use more of the right side of the brain and vice versa.

Most of us would see the dancer turning anti-clockwise though you can try to focus and change the direction; see if you can do it.

LEFT BRAIN FUNCTIONS
uses logic
detail oriented
facts rule
words and language
present and past
math and science
can comprehend
knowing
acknowledges
order/pattern perception
knows object name
reality based
forms strategies
practical
safe

RIGHT BRAIN FUNCTIONS
uses feeling
"big picture" oriented
imagination rules
symbols and images
present and future
philosophy & religion
can "get it" (i.e. meaning)
believes
appreciates
spatial perception
knows object function
fantasy based
presents possibilities
impetuous
risk taking

Chemistry Question - Practical Qns

Hey can you pleaseeeeeeeeeeeeeeee help me with a qn.

This is for the chemistry spa I would be sitting tmr (SEC 3)



During an acid base titration, what are the possible sources of experimental error?



It would be great If I could get a reply today bcos as I have mentioned earlier I am sitting for the science practical O LEVELS tmr!!

THANKS.


Three most common ones are:

1) Parallax Error - Wrong placing of the eye while taking readings
2) Meniscus reading - Should be done at the bottom of the meniscus curve, not above or within the curve
3) Washing of the conical flask with analyte before titration. This causes additional amount of analyte to be included into the flask (in addition to the actual amount that you intended to pipette in)

Sean
SimpleChemConcepts