Posts Tagged ‘Covalent bond’

More on ionic and covalent compounds

Wednesday, March 2nd, 2011

ionic lattice of sodium chloride by INDIKA KUMARA on flickr

Ionic substances tend to form giant lattices.  Read this information to help you understand why.  Covalent substances can be simple molecular or giant covalent.  Metals form metallic bonds between their atoms.

This site is very useful for review and revision before your test.  Click through the different pages (parts 2, 3, 4 and 5).

Thanks to Mr Goodman for supplying these review sheets on structures and bonding.  simple mol cmpds   giant cov struc

Peer assessment of lab work

Wednesday, February 23rd, 2011

Spectacle chandelier by seq on flickr

We’ll be doing an experiment to compare the properties of ionic and covalent substances, and to then relate these properties to the types of bonding in them.  Here’s the instruction sheet: LAB – How are the properties of substances explained by theories of bonding and structure

Once you have written up the lab report, you will peer assess it using these rubrics.  FINALRubric DCP   FINAL Rubric CE  The first one (DCP) looks at your data collection.  The second one (CE) looks at your conclusion and evaluations.  A few of your classmates can give you feedback, which you can then act on before you submit the final version to me.