Thermite displacement demonstration goes wrong – video
The thermite reaction is used to repair railways: the reaction between aluminium and iron oxide is highly exothermic and produces molten iron.
It should be properly controlled if demonstrated in the lab: watch this video and see how many mistakes in basic lab safety made by this teacher.
Galvanising – video
This video shows the galvanising of pieces of steel to protect them from rusting:
(Triple only) Titration calculations – videos
Here are a couple of videos explaining how to perform titration calculations:
3 reactions of acid – video
Underneath are 3 acid reactions :
alkali + acid → water + salt
base + acid → water + salt
carbonate + acid → water + salt + carbon dioxide
Identifying cations using sodium hydroxide – video
Underneath is Sodium Hydroxide added to:
Iron (II) Ions
Iron (III) Ions
Copper (II) Ions
Ammonia
Test for Anions – video
Underneath are the tests for:
Carbonate ions
sulfate ions
chloride ions
bromide ions
iodide ions
(Triple only) Bond energy calculations – videos
Here are a couple of videos explaining how to do bond energy calculations:
Reversible reactions – video
Here is a video introducing reversible reactions:
(Triple only) Equilibria in reversible reactions: Temperature – video
This video explains how the position of equilibrium in a reversible reaction is affected by changes to temperature.
(Triple only) Equilibria in reversible reactions: Pressure – video
This video explains how the position of equilibrium in a reversible reaction is affected by changes to pressure.
Test for alkane vs alkene using Bromine – video
This video shows the addition reaction between bromine and an alkene.
The observation from the reaction is the colour change from orange to colourless.
Fractional distillation – videos
This video does not quite use the right language for the various fractions as appropriate to the Edexcel iGCSE, but it is nevertheless a good description of the process. Make sure you use the notes on tutorMyself.com to get the exact language you will need for your exam.
And another somewhat older video showing the industrial process of fractional distillation:
Cracking – videos
this somewhat old video talks about the industrial process of cracking:
Introduction to alkanes – video
This video is a good introduction to alkanes and crude oil:
(Triple only) Alcohols – video
This video introduces alcohols:
(Triple Only) Manufacture of ethanol video
Here’s a great video which shows the 2 ways to make ethanol.
(Triple only) Carboxylic acids – video
This video introduces carboxylic acids:
Addition polymers – video
This video introduces addition polymers:
(Triple Only) Condensation polymers – video
This video introduces the idea of condensation polymers: