Thinking Allowed

You’ve all been asking, pleading, begging for another assessment.  Well, the good news is, you have one coming up next week – YEAH! 

Block H students will take it on THURSDAY 1st OCTOBER. 

Block D students will take it on FRIDAY 2nd OCTOBER.

Look through your notes from class, and go back through all the blog posts on atomic structure, the Periodic Table, electron configuration, metals vs non-metals, ionic and covalent bonding, Lewis structures, writing formulae, balancing equations et al.

COME AND SEE ME DURING TUTORIALS if you need help.

dot and cross diagram wikimedia commons

Lewis structures, also known as dot and cross diagrams, represent the arrangement of valence electrons in elements and compounds.  This site has a detailed explanation of how to draw them.

These sites are ones we will use in class to practice.  Feel free to practice at home too

http://chemsite.lsrhs.net/bonding/flashLewis.html

http://itl.chem.ufl.edu/2045/lectures/lewis_ramyess/pjb_ramyess.html

http://education.jlab.org/elementmath/index.html

http://education.jlab.org/indexpages/teachers.php

http://www.stolaf.edu/depts/chemistry/courses/toolkits/121/js/lewis/

YOU KNOW THIS STUFF ALREADY!  You covered it in grade 8.  This is just a recap.  Click on the link to see the slides we will use in class. Atomic Structure Projections

Also, take a look at this link from the BBC Bitesize site.  It will give you some good pre-reading on the topic and help you get up to speed.