The phosphorus sun. There are few more iconic chemistry demonstrations that if you
think of a painting of the chemist at work you're probably thinking of a
Joseph rights image or at least one heavily influenced by him
paintings with such catchy titles as the openness in search of the Philosopher's
Stone discovers frustrates him praise for the successful conclusion of his
operations as was the custom of the agents chemical stoppages the subject is
often depicted busting in the warm glow so it was and is a palpable sense of all
shapes as white phosphorus is becoming increasingly difficult to get hold of I
get the sense that few people demonstrating this reaction in schools
partly because many seem to think that it can't be done with red phosphorus
obviously going to need some posters for grabs is more than enough to fill it
that great things and make sure its meanwhile a wonderfully to cuba round
button borosilicate glass is going to provide us with the so much for our
reaction I'm using a tendency to keep floods here the logical us have the
advantage of this most effective beginning lasting a lot longer and being
more dramatic so if you do have a logical us go ahead and use it you can
be looking ideally for a thick walls close and you can actually get a fairly
decent price on this class on eBay at the moment if you look around it's worth
investing because there's so many demonstrations that just works so much
better if you have a nice sized robots are close to work with classes going to
need to the completely full
oxygen system worked with red phosphorus and you can do this by downward
displacement of water from a gas cylinder or oxygen generators it or you
can flash floods good oxygen gas if you covered for 5 minutes I thought above so
that I can remain desecrating speed through ended deliveries you and that's
gonna be netted system or turn trippin any expelled gases and water has some
indicators so that if any gas does about we can see the effect it has on the pH
once you're ready hehe end of a glass during the roads in a roaring sleep for
about 30 seconds and touch the end against us
this very moment it's a good idea to remove the end of the tube as the
reactions to avoid such indicators as phosphoric acid is for the structures of
the electrodes that phosphorus resented number of unusual properties making it
an ideal candidate a discussion with all the students before I get home to the
reactions in the period three elements already have covered structure and
bonding so tightly students to draw the Lewis structure for four separate and
used to predict some of its properties before I actually get out and show them
inevitably the end up drawing diabolique structure analogous to that nitrogen and
an opportunity presents itself to have a look at how the atomic radius the
strength of the piebald and the implications for the structure of
phosphorus and so for example when compared with nitrogen and oxygen which
of course I died homie we also have a comparison between silicon dioxide and a
dramatically different carbon dioxide so connected to get a symbolic values which
might be used to replace them
this month's article and education in chemistry a link to which would appear
somewhere
values go have a look at those with these students and in the meantime keep
that phosphorus going to die out thanks for watching and see you next time