A classic Chem3.4 type question worth learning.

Wednesday, June 19th, 2013 | walda41p | No Comments

Have you ever wondered how to go about explaining the relationship between enthalpy of vaporization, boiling point and intermolecular forces? A thorough understanding of these 3 concepts is essential when it comes to tackling many questions that are often asked in the Chemistry 3.4 external standard.

Notice how the presenter uses graphes and diagrams to aid in his explanation.Old addage of “a picture says a 1000 words”. Use them as they can save you both time and space during the final exam.

Also, it is a good approach to draw the moelcules one beside the other, so you can make quick comparisons between the structures themselves and the resulting bp’s and/or enthalpy of vaporistion.

This a very common type of question, regularly asked in the external exam for Chemistry 3.4- Demonstrate understanding of thermochemical principles and the properties of particles and substances


New OUASSA Chemistry Tutor

Friday, June 7th, 2013 | walda41p | No Comments

Hey Everyone

My name is David Wales and I’ve just joined the OUASSA team. I have worked as a Chemistry and Science Teacher in a number of high schools, and currently am a senior tutor with the foundation studies faculty at Lincoln University.

I am looking forward to reading your posts on Knowledge Forum and helping you find understanding and the answers to your chemistry curriculum questions. I’m here to help you get the most out of your involvement with OUASSA.

Hear from you soon. David