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chemistry - meaghersclasses

  1. Equilibrium Graphs2016/10/21

    We look at graphs of concentration vs time and rate vs time for the Haber process. Consideration of the value of the equilibrium constant as changes are made to the system at equilibrium are included.
  2. Equilibrium Constant Values2016/10/20

    In this episode we consider some values of an equilibrium, and show that even if the raw ratio of reactants to products is reversed when a chemical equilibrium is reestablished the value of the equilibrium constant remains unchanged, so long as the temperature remains constant.
  3. Equilibrium2011/01/03
    This chemistry video podcast looks at the concept of equilibrium as it applies to chemical systems. (It is an old,ie 2006, episode that I inadvertently deleted when trying to get rid of spam comments!) I really must publish more up to date episodes!! I do intend to get more episodes out this year, along with an epub book on intro chem.
    Richard
  4. Mindocular and the opposing forces (video) jan 15th 20092009/01/15
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  5. reactivity of alcohols (video) nov 11th 20082008/11/11
    This chemistry video podcast investigates the reactions of ethanol, 1-butanol (ie butan-1-ol), 2-butanol (ie butan-2-ol) and methyl-2-propanol (ie methylpropan-2-ol) with potassium dichromate, potassium permanganate and sodium metal. We see that tertiary alcohols are less reactive than secondary alcohols, which are less reactive than primary alcohols.
  6. Valence Shell Electron Pair Repulsion (video) August 11th 20082008/08/11
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  7. preparation and properties of gases - oxygen (video) august 2nd 20082008/08/02
    This chemistry video podcast demonstrates the laboratory production of oxygen gas, using thistle funnel, conical flask, gas jar, pneumatic trough, behive shelf and hydrogen peroxide decomposition (catalysed by manganese dioxide), its collection via the downward displacement of water and the subsequent testing that can be performed by reignition of a glowing wick.
  8. reactions of hydroxide and ammonia solutions with salts of metals - (video) june 9 20082008/06/08
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  9. preparation and properties of gases - carbon dioxide (video) may 23 20082008/05/25
    This chemistry video podcast demonstrates the laboratory production of carbon dioxide gas, using thistle funnel, conical flask, gas jar and hydrochloric acid on calcium carbonate, its collection via the upward displacement of air and the subsequent testing that can be performed to illustrate carbon dioxide's properties of density and acidity, as well as the limewater test.
  10. ionic compounds and formulae (video) feb 9 20082008/02/09
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  11. electrochemical cells (video) sept 19 072007/09/19
    This video chemistry podcasts looks at some aspects of electrochemistry as displayed in standard, simple high school chemistry experiments. The episode investigates standard reduction potentials, the concept of metal displacement, and electrochemical cells.
  12. electrochemical cells (audio) sept 19 072007/09/19
    This enhanced chemistry podcasts looks at some aspects of electrochemistry as displayed in standard, simple high school chemistry experiments. The episode investigates standard reduction potentials, the concept of metal displacement, and electrochemical cells.
  13. ionic equations (video) june 5 072007/06/05
    A simple concept that causes difficulties for students. ie using ionic equations to represent chemical reactions. This chemistry video podcast explains why spectator ions should not be included in a chemical equation.
  14. detergents (video) march 4 072007/03/04
    This short video chemistry podcast investigates the function of detegent molecules. It answers the questions "How can we wash greasy dishes?" and "Why is milk like 'fatty sweat'??!!"
  15. detergents (audio) march 4 072007/03/04
    This audio chemistry podcast is the soundtrack for the video podcast 'detergents (video) march 4 07'. It investigates the function of detegent molecules.
  16. intermolecular forces (video) feb 25 072007/02/25
    This chemistry video podcast looks at the intermolecular forces; dipole-dipole interactions and dispersion forces; that occur between covalent molecules. (There is another episode posted last year that looks at hydrogen bonding.)
  17. intermolecular forces (audio) feb 25 072007/02/25
    This file is the audio track for the video podcast 'intermolecular forces (video) feb 25 07'. It looks at dipole-dipole interactions and dispersion (london) forces.
  18. molecular polarity (video) feb 18 072007/02/18
    This chemistry video podcast looks how electronegativity determines the type of bond that exists between two atoms, and how the symmetry of the resultant molecule will influence its overall dipole potential.
  19. molecular polarity (audio) feb 18 072007/02/17
    This is the audiotrack of the chemistry video podcast 'molecular polarity (video) feb 18 07'. It looks at the concpt of electronegativity and how it influences bond and molecular polarity.
  20. ionisation energy (video) feb 11 072007/02/11
    This chemistry video podcast looks at defining ionisation energy and explaining trends and periodicity of values for ionisation energy in the periodic table. I look at factors which influence the ease with which electrons may be removed from atoms.
  21. ionisation energy (audio) feb 11 072007/02/11
    This chemistry podcast is the audio track for my video podcast 'Ionisation Energy (video) feb 11 07'. It looks at defining ionisation energy and explaining trends and periodicity of values for ionisation energy in the periodic table.
  22. I'm Excited! (video) Feb 4 072007/02/04
    This podcast looks at how the modern model of the atom was developed.
  23. valence shell electron pair repulsion (video) jan 27 072007/01/27
    The pairs of electrons that exist in the valence shells of atoms repel each other as far as possible. This repulsion helps determine the shapes of molecules formed in covalent compounds. This podcast shows some of these possible shapes and explains their formation.
  24. valence shell electron pair repulsion (audio) jan 27 072007/01/27
    Hi, this audio file is a copy of the soundtrack from the podcast 'valence shell electron pair repulsion (video) jan 27 07'. I hope that these audio files prove useful. Please let me know, one way or another.
  25. the first 20 elements (audio file) (jan 23 07)2007/01/23
    Hi, this audio file is a copy of the soundtrack for the previous podcast (ie the first 20 elements (video file) (jan 23 07)). I hope that these audio files prove useful. Please let me know, one way or another.
  26. the first 20 elements (video file) (jan 23 07)2007/01/23
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  27. pH and Kw2006/11/14
    In this podcast I look at how pH is determined, what it means, some examples, and some important equilibria.
  28. hydrogen bonds2006/11/06
    I won't be able to put up another episode for a couple of weeks as all my spare time will be taken up marking TEE papers! This podcast looks at hydrogen bonds, how they form, what effects they have and their importance to life on Earth.
  29. a few hindenburg facts2006/11/04
    This podcast follows up the previous one on hydrogen fuel cells. In it I mentioned the Hindenburg airship, but have been contacted by a few people who didn't know about it. I've put together a few facts, pics and video of it (including one of its safe landings in the US) as a starting point if you want to research it.
  30. hydrogen fuel cells2006/10/24
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  31. collision theory2006/10/22
    When is a fatal car accident 'successful'? When used to explain reaction rates and collision theory. This may be a bit ghoulish, but comparing car collisions to particle collisions seems to work.
  32. Overall redox equations2006/10/17
    How do you write and balance redox equations? An earlier podcast explained how to write and balance half equations. This podcasts shows how to combine two half equations and arrive at a balanced overall redox equation.
  33. balancing redox half equations2006/10/14
    Redox equation balancing need not fill you with fear. Blindly following these rules and you will be able to write a balanced half equation.
  34. Chemistry exam techniques2006/10/13
    Its exam time. I've just finished marking some chemistry exams, and thought that it might be a good time to post some strategies to use to answer typical questions. ie How can you write an equation for, and determine what you would observe, in a chemical reaction?
  35. chemistry calculations2006/10/12
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  36. alkali metals2006/10/09
    I've been busy lately, and haven't had time to generate anything new myself. I forget where I got this video from, but it is a beauty. Makes you remember why you first got interested in chemistry ......... explosions! (This file is 15Mb so you will have to wait for a bit .... but it will be worth it!)
  37. IUPAC naming of hydrocarbons I2006/09/27
    The first in a series of casts explaining the method used to name simple hydrocarbons.
  38. acid base karaoke2006/09/18
    Some of my class were singing 'Gimme Gimme a Redox Titration' today - it inspired me to post this acid/base version (to Bohemian Rhapsody).
  39. organic introduction2006/09/11
    Its been a while since I last posted .... been very busy. Have just tried new software for this post; a very brief introduction to hydrocarbons and organic chemistry. Hopefully more will follow.
  40. karaoke redox titration2006/07/25
    You asked for it!! Here is the 'Gimme Gimme' redox titration karaoke. Let me know if you like these type of files..... I've got plenty of them!!!!!!!
  41. oxidation numbers2006/07/02
    Follow these simple rules and you will always be able to determine the oxidation state of an element.
  42. redox review2006/06/11
    A very brief recap of year 11 redox terminology and definitions. (vodcast)
  43. what's happening here?2006/06/01
    The other day in class Elle was using her lip gloss. Here is a video of what we saw. What is going on? (vodcast)
  44. covalent compounds2006/05/28
    Some introductory notes about naming covalent compounds. (Audio is from The Grates 'Science is Golden' -'Gravity Won't Get You High') (vodcast)
  45. a definition of chemical equilibrium2006/05/27
    Equilibrium is a dynamic process, much like a game of footy. (audio)
  46. calculations in acid/base titrations2006/05/27
    OK so now you've performed a titration how can you make use of the data that you have collected? (audio)
  47. indicators in acid/base titrations2006/05/27
    How do we select an appropriate indicator for use in a variety of acid/base titrations? (audio)
  48. primary standards in acid/base titrations2006/05/27
    How do we select a chemical for use as a primary standard? And what is a primary standard anyway? (audio)
  49. electronegativity & polarity2006/05/27
    This audio discusses the cause of polar bonds and polar molecules. (audio)
  50. covalent bonds II2006/05/27
    The second of two short podcsts on covalent bonding. This one looks at the intermolecular forces in covalent solids, ie Van der Waal forces. (audio)
  51. collision theory2006/05/27
    A brief description of the factors that control the rate of a chemical reaction. (audio)
  52. covalent bonds I2006/05/27
    The first of two brief descriptionsof covalent bonding. This podcast looks at primary covalent bonds. (audio)
  53. metallic bonds2006/05/27
    A brief description of metallic bonding. (audio)
  54. reaction rates2006/05/25
    This presentation compares collision theory to a foot y game. (vodcast)
  55. ionic bonds2006/05/25
    A brief description of ionic bonding. (audio)
  56. titration equipment2006/05/25
    A video file describing equipment used in titration experiments. (vodcast)
chemistry - meaghersclasses
https://meaghersclasses.podomatic.com
These chemistry video podcasts are high school chemistry snippets, from Mt Lawley Senior High School.
To help make these resources more useful your feedback would be appreciated.
You may also want to check out my physics video podcasts at www.meaghersphysics.podomatic.com.

Thanks,
Richard.

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