Chemistry self-assessments on Kerboodle

There are now two 'test yourself' assignments waiting for you at www.kerboodle.co.uk - one for each of our recent Chemistry topics, with a due date of Wednesday 14th November.

Email me on tla@cheney.oxon.sch.uk if you can't log in.

Chemistry homework

The new chemistry homework regime involves a weekly task to be completed for Wednesday. I will generally aim to set this on Monday of week B and on Friday of week B for the following Wednesday in each case. Wednesday hand-ins mean that those of you who don't manage to finish the work can stay at the end of the lesson to receive some help with doing so!

For this week there are actually two tasks - one has 'rolled forward' from last week.

1) Produce your own annotated diagrams illustrating and explaining the effect that concentration, gas pressure and temperature have on reaction rates. The diagram I gave you last Wednesday illustrating how Collision Theory can be used to explain the effect of surface area on reaction rate can serve as inspiration.

This might also help:
http://www.bbc.co.uk/learningzone/clips/collision-theory-and-rates-of-reaction/10668.html
This is the collision simulator we looked at last week:
http://www.animatedscience.com.au/learningmodules/collision.swf

Your diagrams should show a) what effect increasing the temperature / concentration / pressure has on the reaction rate, b) how it affects the number and/or energy of collisions between particles and c) the link between these.

2) Write a method section and draw a neat results table and graph for today's practical:
Your method section should include:

• Your IV, DV and control variables 
• The range and interval of your IV 
• A list of equipment, and brief instructions for its use, including a diagram 
• A risk assessment – what could go wrong (hazards), the risk of these and how this can be reduced 
• Sources of error and how these could be reduced

Your graph should show reaction rate (1/time in seconds) against concentration of HCl.

Physics P2: 
REVISION for FORCES (p2.2)
REVISION on WORK and MOMENTUM (p2.3)

A double set of revisions is now available for the Y11yqSc group, in Kerboodle.

The set will remain available until the end of the week (Sunday the 14th of October), by which time you should have completed all the tasks requested.
Kerboodle is a useful place where to start your revision and check your skills.
Your access to the resources and the results will obviously be monitored and recorded and marked (by yourself when prompted).

A new set of revision material and a certain amount of PPT resources will be available shortly on the ELECTRICITY and CHARGE topic.

Have a re-CHARGING weekend and see you all next week!

Dr. Pontecorvi

PS I) If you cannot access Kerboodle, you must contact me at mpo@cheney.oxon.sch.uk and I will define a day and time when manually amend your accounts.
PS II) Please check whether you have also access to Physics for You book within Kerboodle website: such resources have been set for you and you should be able to use it.

HYDROPONICS

Your homework for next week includes finding out about hydroponics. As it happens Wikipedia has a good entry on this - see http://en.wikipedia.org/wiki/Hydroponics

Interestingly, Oxford also has a hydroponics equipment shop - see http://www.3ch.co.uk/oxford/info_42.html

Have a good weekend. Look out for lichens.

Mr B