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Cool resource for Physics and Chemistry

Monday, March 31st, 2014 | EMILY HALL | Comments Off on Cool resource for Physics and Chemistry

websiteI ran across this website a couple of years ago but for some reason didn’t use it at all.

http://www.gpb.org/chemistry-physics

On the site is a complete course in Chemistry and a complete course in Physics for high school level in Georgia, USA. They consist of a series of videos, one on each topic listed with note taking guides and study guides. The videos are only about half an hour long and come with a problem set based on the video.

I am going to trial one of these in class today and also show the girls the link in the hopes that they might use the videos at home for their own revision. I was thinking too it might be a good activity for them if I am away so they can still move forward with their learning even when I am not there. We have a set of netbooks they can use and watch the material on their own if the reliever doesn’t have a laptop to show the whole class at once.

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

http://www.noodle.org/learn/details/206549/1713-relate-enthalpy-of-vaporization-boiling-point-and-intermolecular-forces-ib-chemistry-hl

Kahn Academy

Friday, September 16th, 2011 | hamvi58p | No Comments

This site has a vast number of resources covering much of your Y13 curriculum content… Physics, Chemistry, Biology, Maths (Calc and Stats) etc.  Useful tutorials to watch when you are sick of writing out your own study notes etc and just want to keep learning….

http://www.khanacademy.org/

Particles

Monday, May 23rd, 2011 | KEV KNOWLES | No Comments

This achievement standard involves describing properties of atoms, molecules, and ions, and thermochemical principles.

Properties of particles include:

  • electron configuration of atoms and ions of the first 36 elements (using s,p,d notation)
  • special characteristics of transition metals (variable oxidation state, colour) related to electron configuration. Transition metals will be limited to iron, vanadium, chromium, manganese, copper and zinc
  • periodic trends in atomic radius, ionisation energy, and electronegativity, and comparison of atomic and ionic radii
  • Lewis structures and shapes (up to six electron pairs about the central atom for molecules and polyatomic ions, including those with multiple bonds)
  • polarity of molecules
  • attractive forces between atoms, ions, and molecules. These will include ionic bonds, covalent bonds, and intermolecular attractions due to temporary dipoles and permanent dipoles (including hydrogen bonding).

Thermochemical principles include:

  • transfer of heat between the system and the surroundings
  • calculations involving the use of specific heat capacity
  • ΔcH°, ΔfH°, ΔrH°, ΔvapH°, ΔsubH°, and ΔfusH°
  • Hess’s Law including application of ΔrH(= ΣΔfH((products) – ΣΔfH((reactants)
  • bond enthalpies.