January 2015 archive

Covalent bonding – building molecules

Building molecules

1. Go to the Phet simulation Build a molecule and see how molecules are attached and what the rules are for formulae.

Build a Molecule

Click to Run


(HInt : you will likely get a message that says it was blocked from running… go to the apple (top left) and click Preferences >Security and privacy > Open Anyway. Unless you have a lot of time, choose Update Java LATER)

Write down a few sentences and maybe a diagram or two to show what you discover.

2. Get a model building kit for your table.

Follow the instructions from the handouts at the front of the room to build molecules with the kits. Record what you make, and the shapes formed.

3. What are the similarities and differences between the models (online and plastic)?

Which is clearer? Why?

Organic and related syllabus

Here is the list of what to know from this unit.

Names and structures:

An interactive molecule simulation ; you can add functional groups to it and see the name.

One example of naming with branches.

Would you like to practice some more naming of compounds? Try here for a list of quizzes on each type of molecule.

All about isomers (clickable links to each type)


Ethene chemistry series of clickable info on reactions, preparation, etc (reactions of alkenes)

Addition reaction link and lots and lots of info on polymers



HL topic 14

Some possibly useful links for the topics here:
Hybrid orbitals
Note and another version here
worksheet (with Formal charge and VSEPR) and another worksheet here


Formal charge
a Video
An explanation (see your text book also)
example problem worked out

What is Ozone?
A video on the bonds in ozone
Catalytic destruction of Ozone
a video (ending is a bit odd, sorry)

Files with ozone information scanned from other text books

Don’t like the text book much? Here :A complete set of notes on topic 14

Some Review Questions (from IB past paper) on Topics 1-5
(the answers are at the end of the document)

Space – the final frontier

Where are we in the Universe? How do we know? How do we measure distances and account for planetary motion?

Welcome to our very small blue dot of a planet in the vastness of space.

How far are we from the Sun? How long would it take to get to Neptune? How far away is the Moon?

Take a look with this cool simulation!

(You can check out Bill Nye’s model of this too, or another man’s version here)

Afterwards, we will discuss some ideas about travelling through space.

Then, we will take a look at this orbital simulator that plots the motion of planets and gives you data on them. CLICK THROUGH THE TUTORIAL FIRST. We will work in teams to answer the questions at the end.