Wednesday 25 May 2022
Moles and things
I never understand why it takes such a long time to introduce moles. The students seem to find it hard because many other alternatives are used to almost explain moles away, do why do we have to use grams per cubic litre?
Centripetal Force
Centripetal Force depends on the speed at which the object is rotated - its angular speed and the length of the string ( its radius) and its mass of course.
Monday 23 May 2022
New Locktronics
To try and make practicals quicker and easier and more informative locktronics by @MatrixTSL seem to be the answer. I used them as a student many years ago and these things have well stood the test of time and are still great for my students.
Sunday 22 May 2022
IR Spectrometry
Investigating what bonds are. Looking at IR spectrometry to see just what is going on, inside organic molecules. Practical work with these machines is essential A level learning.
Saturday 21 May 2022
Using a lightbox
Sometimes old school systems work well. We had some graphs to compare but they weren't on the computer, but were on graph paper. Using the old fashioned light box one shone through the other making the comparison simple.
Friday 20 May 2022
Comparing the properties of oil fractions
I have done this experiment many times and each time with this source of synthetic crude oil the first fraction burns and so does the second, but not the third of the fourth but the fifth and sixth do
Thursday 19 May 2022
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A level computing 12 Mark questions
Practice planning the 12-mark A-level computing questions. It is not just about getting the facts down but also about organizing them effect...
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Negative feedback is a difficult concept to try and get over so I tried using a balance board and the @pascoscientific smart cart strapped...
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Getting a classic set of results for the titration of NaOH and HCl is not that difficult but it is nice when we can get students to this ...
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Reactions with the different Alcohols to see the change in rate and water for comparison and why not to react with acids. An extra experime...