Adrian Dingle's Chemistry Pages
Chemistry Educator, Tutor & Author
More random facts. 1. Organic amines like methylamine, CH3NH2, are weak bases since the lone pair on the N atom can accept H+. 2. Nickel (II) salts are green. 3. Positive Ecell values go with negative Delta G values and very large K values. 4. When [H+] in solution is < [OH-] the solution is [...]
Random facts. 1. The speed of a chemical reaction is not related to the equilibrium position. 2. Hydrogen bonding is an INTERmolecular force, not an INTRAmolecular bond. 3. Electrolysis is only necessary when a reaction is non-spontaneous with a positive Delta G. 4. Rutherford’s Gold Foil Experiment produced evidence of a dense, positively charged nucleus. [...]
It’s that time of year again, AP review, and whilst Atlanta in the spring tends to feel a long way removed from Christmas, this really is the most wonderful time of the year for any student preparing themselves for the AP Chemistry exam in the first week of May. I say that mainly because the [...]
Well, I guess if you’ve made it this far you already know that. A new logo, a new look and new content announce the new, Adrian Dingle’s Chemistry Pages! As is the norm with moves and changes of this magnitude, there is going to be a significant settling-in period, and to be honest, it will [...]
It’s a common question for chemistry students, and when it comes to the AP chemistry exam there is a choice of values for the Universal Gas Constant. Currently appearing on an AP formula sheet near you, you can find the following; a. R = 8.31 J mol-1 K-1 b. R = 0.0821 L atm mol-1 [...]
This is the second in the series (the first is here) of short blog posts on the new content (as I currently see it) of the 2013-14 AP Chemistry Curriculum. Mass Spectrometry (at this level) is something that I know a little bit about. Now, although that statement in and of itself is accurate, like [...]
Following my summary of the new, exclusion statements, this is the first in a series of short blog posts that I intend to write about each of the additions to the new, AP chemistry curriculum. Keep coming back for more as the series progresses. First up, Photoelectron Spectroscopy (PES). OK, I don’t really understand the [...]
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I am now getting into the nitty-gritty of the new framework as I prepare my materials for a huge overhaul and re-write. In general, exclusion statements are incredibly useful, and frankly should ALWAYS have been in the course description, BUT until we see further sample questions, and/or we have a history of the new exam, [...]
A student asked me today (thanks, Austin) why there are two different expressions given on the AP exam for calculating the root mean square speed of a gas, and how this can be explained in terms of the use of k, R, m and M. Here’s the answer that I gave. You will find two [...]
Chemistry educator Adrian Dingle is the creator of Adrian Dingle’s Chemistry Pages.
He has almost a quarter of a century of teaching experience in both the UK and the USA, and is committed to traditional aspects of knowledge & understanding taught in digital environments.
He is interested in real achievement as opposed to the perception of achievement, and specializes in maximizing test scores and improving grades in general.