Do you know the difference between a base and an alkali?
An alkali is simply a base that can dissolve in water
Bases are oxides or hydroxides of metals . They react with acids to form a salt and water only.
A base can also be defined as a proton acceptor.
Friday, 22 April 2016
Sunday, 17 April 2016
Wednesday, 30 March 2016
Diffusion, osmosis, active transport
Diffusion, osmosis and active transport are all means by which particles move from one area to the next.
Diffusion is a form of passive transport and involves movement down a concentration gradient. This means that particle move from an area of high concentration to low concentration. Think of how the scent of perfume travels..........this is diffusion.
Osmosis is also a form of passive transport but refers to movement of water particles from high to low concentration but through a partially permeable membrane.
Active transport as the name suggests is "active". It requires energy and this is where particles are moved against a concentration gradient, form low concentration to high concentration. This is the way glucose is absorbed by the body.
Diffusion is a form of passive transport and involves movement down a concentration gradient. This means that particle move from an area of high concentration to low concentration. Think of how the scent of perfume travels..........this is diffusion.
Osmosis is also a form of passive transport but refers to movement of water particles from high to low concentration but through a partially permeable membrane.
Active transport as the name suggests is "active". It requires energy and this is where particles are moved against a concentration gradient, form low concentration to high concentration. This is the way glucose is absorbed by the body.
Thursday, 24 March 2016
Complete Chemistry Revision Workbook
 |
Coming In April, just in time for last minute revision. |
of Complete Chemistry Revision workbook coming out in April.
This book is a comprehensive review of all topics on your CSEC syllabus.
Wednesday, 23 March 2016
Wednesday, 16 March 2016
Have you completed your syllabi?
By now, most teachers should be finished or just about finished their syllabus.
Students....you must assess the situation yourself. If there are many topics left to be completed, do not trivialize them. I have seen many topics ignored by teachers that have come on the CSEC exams.
All topics are important.
Therefore, take heed.......if the teachers do not cover a topic then you must ensure that you do so either though extras or by yourself. You can do it!
Monday, 29 February 2016
How to properly prepare for an exam
Check out my article in the Jamaica observer about preparing for your exams.
Several useful tips are discussed.
http://www.jamaicaobserver.com/magazines/career/How-to-properly-prepare-for-an-exam-_52272
Several useful tips are discussed.
http://www.jamaicaobserver.com/magazines/career/How-to-properly-prepare-for-an-exam-_52272
Subscribe to:
Posts (Atom)