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Episodes
- reactions of hydroxide and ammonia solutions with salts of metals - (video) june 9 2008
(7mb)
Sun, 08 Jun 2008 11:07:50 GMT
This chemistry video podcast looks at the reactions of basic solutions (ie ammonia solution and hydroxide solutions) with solutions of metal salts (ie Mg, Al, FeII, FeIII, Cu, Zn, Ag, and Cr). As well as displaying the appearance of the resulting products, the chemical equations representing the reactions are shown. Demonstrated are the production of the complex ions aluminate, zincate and chromate from addition of excess hydroxide to solutions of the amphoteric metal salts of Al, Zn and Cr. The complex ions produced by addition of excess ammonia with Cu, Zn and Ag are also demonstrated. - preparation and properties of gases - carbon dioxide (video) may 23 2008 (4mb)
Sat, 24 May 2008 23:42:33 GMT
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. - ionic compounds and formulae (video) feb 9 2008 (29mb)
Sat, 09 Feb 2008 08:48:26 GMT
It has been a long time since my last post, holidays and theft of my laptops have conspired against me. I intend to post some episodes of fundamental chemistry principles this year to help those of you in preliminary chemistry courses, or to be used for revision for others. This video chemistry podcast looks at how ionic compounds form, and how we write formulae to represent the relative amounts of ions in ionic compounds. - electrochemical cells (video) sept 19 07 (9mb)
Wed, 19 Sep 2007 12:39:09 GMT
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. - electrochemical cells (audio) sept 19 07 (3mb)
Wed, 19 Sep 2007 12:10:22 GMT
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. - redox titration (video) july 14 2007 (3mb)
Sun, 15 Jul 2007 10:15:42 GMT
This video podcast looks at the procedure employed to standardise a potassium permanganate solution by titrating it against a standard solution of oxalic acid. It considers differences between this titration and a typical acid/base titration. - ionic equations (video) june 5 07 (12mb)
Tue, 05 Jun 2007 15:19:37 GMT
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. - detergents (video) march 4 07 (10mb)
Sun, 04 Mar 2007 13:13:37 GMT
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'??!!" - detergents (audio) march 4 07 (3mb)
Sun, 04 Mar 2007 12:57:33 GMT
This audio chemistry podcast is the soundtrack for the video podcast 'detergents (video) march 4 07'. It investigates the function of detegent molecules. - intermolecular forces (video) feb 25 07 (14mb)
Sun, 25 Feb 2007 05:30:52 GMT
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.) - intermolecular forces (audio) feb 25 07 (5mb)
Sun, 25 Feb 2007 05:21:24 GMT
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. - molecular polarity (video) feb 18 07 (21mb)
Sun, 18 Feb 2007 00:05:37 GMT
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. - molecular polarity (audio) feb 18 07 (5mb)
Sat, 17 Feb 2007 23:55:11 GMT
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. - ionisation energy (video) feb 11 07 (34mb)
Sun, 11 Feb 2007 02:02:10 GMT
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. - ionisation energy (audio) feb 11 07 (6mb)
Sun, 11 Feb 2007 01:53:42 GMT
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. - I'm Excited! (video) Feb 4 07 (17mb)
Sun, 04 Feb 2007 07:43:11 GMT
This podcast looks at how the modern model of the atom was developed. - valence shell electron pair repulsion (video) jan 27 07 (8mb)
Sat, 27 Jan 2007 05:13:39 GMT
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. - valence shell electron pair repulsion (audio) jan 27 07 (4mb)
Sat, 27 Jan 2007 05:06:30 GMT
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. - the first 20 elements (audio file) (jan 23 07) (2mb)
Tue, 23 Jan 2007 03:16:20 GMT
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. - the first 20 elements (video file) (jan 23 07) (9mb)
Tue, 23 Jan 2007 02:58:34 GMT
Hi, and welcome back to this year's chemistry podcasts. We'll start the year simply with an acronym to help you remember the first twenty elements in order. I will try to post a separate audio file (ie the sound track for the video podcast) for each episode this year, so that if your mp3 player doesn't have video capabilities, you can still listen to the episodes when you are out and about. Please let me know if you think these audio files are useful. - pH and Kw (14mb)
Tue, 14 Nov 2006 15:07:37 GMT
In this podcast I look at how pH is determined, what it means, some examples, and some important equilibria. - hydrogen bonds (7mb)
Mon, 06 Nov 2006 15:42:38 GMT
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. - a few hindenburg facts (8mb)
Sat, 04 Nov 2006 04:28:32 GMT
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. - hydrogen fuel cells (8mb)
Tue, 24 Oct 2006 15:03:17 GMT
Hydrogen fuel cells offer a possible solution to mankind's future energy needs. This video podcast gives a brief introduction. These cells like all electrochemical cells are essentially reliant on a redox reaction ie exchange of electrons. In Western Australia, along with other parts of the world, hydrogen fuel celled buses are being trialled. I have written a lot of educational materials for teachers and students based on the Western Australian trial. These materials have been used by teachers and students in many countries and can be located for download at http://www.gdc.asn.au/ecobus/ . I hope you can take the time to have a look and let me know if you find them useful. - collision theory (6mb)
Sun, 22 Oct 2006 14:01:40 GMT
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. - Overall redox equations (4mb)
Tue, 17 Oct 2006 12:41:58 GMT
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. - Equilibrium - Le Chatlier's Principle (10mb)
Sat, 14 Oct 2006 04:22:16 GMT
This episode looks at the equilibrium that exists between nitrogen dioxide and dinitrogen tetroxide to illustrate Le Chatlier's principle. (If you click on the play button you will only see part of the screen, so I suggest that you download this file before viewing.) - balancing redox half equations (4mb)
Sat, 14 Oct 2006 01:21:08 GMT
Redox equation balancing need not fill you with fear. Blindly following these rules and you will be able to write a balanced half equation. - Chemistry exam techniques (13mb)
Fri, 13 Oct 2006 08:50:45 GMT
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? - chemistry calculations (9mb)
Thu, 12 Oct 2006 16:00:38 GMT
High school chemistry calculations are often dressed up to appear to be more difficult than they really are. They just about always follow the same format. However I've just finished marking some chemistry exams and felt compelled to post this podcast. It describes the method that you should employ to solve high school chemistry calculations. (If you tried the sample calculation you should have got the answers (a)3.42A and (b) 5.50kg.) - alkali metals (16mb)
Mon, 09 Oct 2006 23:26:59 GMT
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!) - IUPAC naming of hydrocarbons I (3mb)
Wed, 27 Sep 2006 14:28:54 GMT
The first in a series of casts explaining the method used to name simple hydrocarbons. - acid base karaoke (6mb)
Mon, 18 Sep 2006 16:13:34 GMT
Some of my class were singing 'Gimme Gimme a Redox Titration' today - it inspired me to post this acid/base version (to Bohemian Rhapsody). - organic introduction (2mb)
Mon, 11 Sep 2006 13:13:31 GMT
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. - karaoke redox titration (6mb)
Tue, 25 Jul 2006 14:24:04 GMT
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!!!!!!! - oxidation numbers (2mb)
Sun, 02 Jul 2006 03:01:39 GMT
Follow these simple rules and you will always be able to determine the oxidation state of an element. - redox review (3mb)
Sun, 11 Jun 2006 14:33:51 GMT
A very brief recap of year 11 redox terminology and definitions. (vodcast) - what's happening here? (1mb)
Thu, 01 Jun 2006 14:13:32 GMT
The other day in class Elle was using her lip gloss. Here is a video of what we saw. What is going on? (vodcast) - covalent compounds (1mb)
Sun, 28 May 2006 12:06:09 GMT
Some introductory notes about naming covalent compounds. (Audio is from The Grates 'Science is Golden' -'Gravity Won't Get You High') (vodcast) - a definition of chemical equilibrium (1mb)
Sat, 27 May 2006 16:05:09 GMT
Equilibrium is a dynamic process, much like a game of footy. (audio) - calculations in acid/base titrations (2mb)
Sat, 27 May 2006 16:02:52 GMT
OK so now you've performed a titration how can you make use of the data that you have collected? (audio) - indicators in acid/base titrations (2mb)
Sat, 27 May 2006 15:59:41 GMT
How do we select an appropriate indicator for use in a variety of acid/base titrations? (audio) - primary standards in acid/base titrations (2mb)
Sat, 27 May 2006 15:56:15 GMT
How do we select a chemical for use as a primary standard? And what is a primary standard anyway? (audio) - electronegativity & polarity (2mb)
Sat, 27 May 2006 15:49:06 GMT
This audio discusses the cause of polar bonds and polar molecules. (audio) - covalent bonds II (2mb)
Sat, 27 May 2006 15:43:04 GMT
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) - collision theory (1mb)
Sat, 27 May 2006 15:39:33 GMT
A brief description of the factors that control the rate of a chemical reaction. (audio) - covalent bonds I (1mb)
Sat, 27 May 2006 15:36:56 GMT
The first of two brief descriptionsof covalent bonding. This podcast looks at primary covalent bonds. (audio) - metallic bonds (2mb)
Sat, 27 May 2006 15:33:50 GMT
A brief description of metallic bonding. (audio) - reaction rates (1mb)
Thu, 25 May 2006 13:44:56 GMT
This presentation compares collision theory to a foot y game. (vodcast) - ionic bonds (2mb)
Thu, 25 May 2006 08:42:56 GMT
A brief description of ionic bonding. (audio) - titration equipment (2mb)
Thu, 25 May 2006 13:14:22 GMT
A video file describing equipment used in titration experiments. (vodcast)
