hey guys we are back outside again today
because today we’re experimenting with a
relatively dangerous substance today
we’re playing with propane now in our
standard atmosphere propane is typically
a gas but if you compress it into a
bottle like this it actually liquefied
under its own vapor pressure you shake
one of these bottles and listen
carefully you can actually hear liquid
propane sloshing around inside the
purpose of today’s experiment is to see
if we can get that liquid propane out
now if you remember back to a previous
experiment we took a carbon dioxide fire
extinguisher and sprayed it into a
pillowcase to create a homemade dry ice
and the process for doing that is very
similar to how we’re going to extract
our liquid propane here today now I want
to give a shout out to my friend Kevin
he’s the backyard scientist and before
he started playing with liquid nitrogen
he used liquid propane and the way he
would do that was by modifying the torch
for the propane tank itself and sticking
it upside down into glass so we’re gonna
make that modification here today I’m
going to show you step-by-step how it
works because of the pressure the
propane is putting on the inside of the
tank it wants to escape and so by
opening the valve counterclockwise more
propane can shoot out and by turning it
clockwise it restricts the flow and
limits the flame eventually shutting it
off now this is kind of interesting if
you look down on the tip of the nozzle
you’ll see a little wire mesh in there
and the purpose of that is to stop
flashbacks gas can burn freely outside
of the nozzle but it doesn’t work its
way back inside because that wire mesh
stops it what’s really interesting is if
we remove the sheathing from the nozzle
here the flame actually goes out and if
we try and relight that again it won’t
actually work the hole in the tip here
is so small it’s shooting a gas out like
a jet and so we’re not able to light it
even with a barbecue igniter it whisks
the heat away so quickly there’s no time
for ignition let’s make the hole bigger
so here’s the basic idea I got myself a
hacksaw and a drill with a 932 inch
drill bit we’re going to use the hacksaw
to cut the tip off the torch and the
drill bit to hollow it out and there we
have it as easy as that we’ve got an
instant homemade propane skewer
[Music]
[Applause]
the hole on this nozzle is exponentially
wider than the factory version and so
when we open the valve now there’s
nothing to restrict the flow so the
nozzle cools down quickly and begins
dripping liquid propane now I’m going to
try something now that you probably
shouldn’t try at home I’m going to open
this valve all the way and touch it off
with a barbecue tonight er just want to
see what happens is anything gonna
happen there we go
how sweet
[Applause]
now you might be wondering why the flame
didn’t travel back into the bottle and
make this thing explode and here’s why
we know that the fire triangle says
three things need to be present in order
for combustion to happen we need to have
an ignition source we need to have fuel
and we need to have oxygen but there’s
no oxygen in the bottle so there’s no
way for combustion to take place until
it travels out of the nozzle it mixes
with the oxygen in the air but saying
that this still isn’t an experiment I
can recommend for anyone else all right
now for the fun part the backyard
scientists found that if we crank this
valve fully open and turn it upside down
and leave it in the glass all we have to
do is give it a few minutes and the
glass will fill itself up so we have our
propane with our modified tip we have a
glass so let’s go ahead and put the two
together and see if it really works
[Music]
it is so now that we got our glass
filling up with propane let me tell you
about some of the characteristics of
propane itself we already know that
propane is normally a gas but if you
compress it and stick it in a
pressurized steel container it will
actually carry as a liquid the liquid
itself is pretty cold but maybe not as
cold as you might think it’s nowhere
near the boiling point of liquid
nitrogen
propane boils at minus 40 degrees
Fahrenheit that’s about minus 42 degrees
Celsius but the amazing thing is it
won’t freeze until it hits minus 306 now
even though it’s far from being as cold
as liquid nitrogen making contact with
your bare skin can cause frostbite but
the bigger concern here is this liquid
is flammable meaning if you got it near
a flame or a spark it could go off and
cause a lot of damage
propane vapors are actually heavier than
air which means they’re not going to
float away into the atmosphere they will
sink down into the corners of the room
so if you’re working in a very confined
space with propane and there’s a small
chance you could push out all the air
and suffocate you there we go guys it’s
been about six or seven minutes our
glass is about halfway full and you can
see the stuff is cold because frost is
forming on the outside of the glass
itself there are caps rate has decreased
quite a bit I think that’s because most
of the liquid is out and we’re just
blowing bubbles at this point the
interesting thing is our tank is still
going it’s slowed down but it’s still
pumping out liquid propane look at this
down here so let’s take it apart and
play with the liquid itself
so there we go guys the goal of this
experiment was to extract liquid propane
and I think you could say we’ve done
that successfully but there are a couple
more quick experiments I want to try
before we go first off what will a
marshmallow do soaked in liquid propane
and what will happen if we light it off
okay here we go dunk number one
[Music]
[Music]
oh you hear that
sorry frozen solid cool
look how hard that is that’s cool that
froze pretty quick let’s leave it in
there for about another minute yeah
that’s about a minute let’s take it out
and smash it oh that’s hard nice
yeah it’s like really crispy on the
outside but still a bit of gooey on the
inside maybe I should have left that
little bit longer because now I just
made a mess everywhere let’s try that
again but this time I’m going to light
it off
all right that’s been about a minute you
can see this thing is actually so crispy
it chips off I’m going to light it up
away from the propane
[Music]
that burned out pretty quickly and even
scorch the whole thing so marshmallows
in liquid propane kind of cool but
there’s one bigger question on my mind
that I’d really like to see the results
– what would happen if we touched an
open flame to a glass of liquid propane
what the whole thing explode would it go
up in a big fireball or would it just
sit there and casually burn you and I
both know there’s only one way to find
out now I’m not exactly sure what’s
going to happen so I came out here to a
big cement pad I think I’m just going to
set this thing down and throw lit
matches into it so we can ignite it from
a distance sounds safe right here we go
mom I’m sure ooh oh that was so close
[Music]
there we go yes okay so that wasn’t
incredibly dangerous looks like it’s
still burning it is so there’s a little
flame in there but that’s not super
dangerous at all in fact you can barely
even see the flame if you look closely
you can actually see my match floating
at the bottom what if I roll it around a
little bit oh wow got the little bits of
marshmallow on the side they’re burning
Wow so it didn’t explode and this
actually makes sense because if you
think about it this whole container is
filled with propane like the bottle
itself there’s not much oxygen here so
it doesn’t actually ignite until it gets
up here where it meets the atmosphere
but if I shake it around I can agitate
that and create a lot more gas venting
off I get this thing closed with bigger
if we were to pour the stuff out on the
concrete it would have a lot more
surface area and probably create a much
more dramatic effect I’m actually going
to try it I’m going to pour this on the
pavement there we go
[Music]
cool and it’s gone in an instant
it’s just gone it would have sat there
and burned for indefinite amounts of
time in the glass but you throw it on
the concrete boom it’s gone that was
very cool let’s go ahead and summarize
what we just learned here today we know
that propane is a gas in its normal
state but when compressed and confined
to a container it turns into a liquid
we found that traditional propane
nozzles are designed to mix air with a
propane to give a nice teal blue color
but that if we remove the shroud that
mixes the air it won’t let off at all we
chopped off the tip of the nozzle with a
hacksaw and drilled out the inside and
found that rather than exploding the
large amount of gas being expelled
burned slowly with the air causing a
bright orange flame we opened the valve
all the way tipped it upside down a cup
and left it for about six minutes where
we extracted all the liquid propane and
got half a glass or about one cup
we tried freezing marshmallows to see
what they would do and found they got
really crispy on the outside but unless
they’re soaked longer they stay pretty
gummy on the inside
and finally we tried lighting matches
and throwing them into an open container
of liquid propane to see what happened
where we discover all that really
happens is it just slowly burns off the
top as its able to mix with the air so
there you have it guys now you know how
to modify your propane torches to
extract liquid propane
remember this stuff is extremely
flammable and this probably is an
experiment you really want to try at
home but I’m sure glad you join me for
this video and I’ll be looking for you
the next one talk to you then ha I guess
it comes out the back good to know
like made marshmallow snow that’s gonna
be buggered to clean up
[Music]
because today we’re experimenting with a
relatively dangerous substance today
we’re playing with propane now in our
standard atmosphere propane is typically
a gas but if you compress it into a
bottle like this it actually liquefied
under its own vapor pressure you shake
one of these bottles and listen
carefully you can actually hear liquid
propane sloshing around inside the
purpose of today’s experiment is to see
if we can get that liquid propane out
now if you remember back to a previous
experiment we took a carbon dioxide fire
extinguisher and sprayed it into a
pillowcase to create a homemade dry ice
and the process for doing that is very
similar to how we’re going to extract
our liquid propane here today now I want
to give a shout out to my friend Kevin
he’s the backyard scientist and before
he started playing with liquid nitrogen
he used liquid propane and the way he
would do that was by modifying the torch
for the propane tank itself and sticking
it upside down into glass so we’re gonna
make that modification here today I’m
going to show you step-by-step how it
works because of the pressure the
propane is putting on the inside of the
tank it wants to escape and so by
opening the valve counterclockwise more
propane can shoot out and by turning it
clockwise it restricts the flow and
limits the flame eventually shutting it
off now this is kind of interesting if
you look down on the tip of the nozzle
you’ll see a little wire mesh in there
and the purpose of that is to stop
flashbacks gas can burn freely outside
of the nozzle but it doesn’t work its
way back inside because that wire mesh
stops it what’s really interesting is if
we remove the sheathing from the nozzle
here the flame actually goes out and if
we try and relight that again it won’t
actually work the hole in the tip here
is so small it’s shooting a gas out like
a jet and so we’re not able to light it
even with a barbecue igniter it whisks
the heat away so quickly there’s no time
for ignition let’s make the hole bigger
so here’s the basic idea I got myself a
hacksaw and a drill with a 932 inch
drill bit we’re going to use the hacksaw
to cut the tip off the torch and the
drill bit to hollow it out and there we
have it as easy as that we’ve got an
instant homemade propane skewer
[Music]
[Applause]
the hole on this nozzle is exponentially
wider than the factory version and so
when we open the valve now there’s
nothing to restrict the flow so the
nozzle cools down quickly and begins
dripping liquid propane now I’m going to
try something now that you probably
shouldn’t try at home I’m going to open
this valve all the way and touch it off
with a barbecue tonight er just want to
see what happens is anything gonna
happen there we go
how sweet
[Applause]
now you might be wondering why the flame
didn’t travel back into the bottle and
make this thing explode and here’s why
we know that the fire triangle says
three things need to be present in order
for combustion to happen we need to have
an ignition source we need to have fuel
and we need to have oxygen but there’s
no oxygen in the bottle so there’s no
way for combustion to take place until
it travels out of the nozzle it mixes
with the oxygen in the air but saying
that this still isn’t an experiment I
can recommend for anyone else all right
now for the fun part the backyard
scientists found that if we crank this
valve fully open and turn it upside down
and leave it in the glass all we have to
do is give it a few minutes and the
glass will fill itself up so we have our
propane with our modified tip we have a
glass so let’s go ahead and put the two
together and see if it really works
[Music]
it is so now that we got our glass
filling up with propane let me tell you
about some of the characteristics of
propane itself we already know that
propane is normally a gas but if you
compress it and stick it in a
pressurized steel container it will
actually carry as a liquid the liquid
itself is pretty cold but maybe not as
cold as you might think it’s nowhere
near the boiling point of liquid
nitrogen
propane boils at minus 40 degrees
Fahrenheit that’s about minus 42 degrees
Celsius but the amazing thing is it
won’t freeze until it hits minus 306 now
even though it’s far from being as cold
as liquid nitrogen making contact with
your bare skin can cause frostbite but
the bigger concern here is this liquid
is flammable meaning if you got it near
a flame or a spark it could go off and
cause a lot of damage
propane vapors are actually heavier than
air which means they’re not going to
float away into the atmosphere they will
sink down into the corners of the room
so if you’re working in a very confined
space with propane and there’s a small
chance you could push out all the air
and suffocate you there we go guys it’s
been about six or seven minutes our
glass is about halfway full and you can
see the stuff is cold because frost is
forming on the outside of the glass
itself there are caps rate has decreased
quite a bit I think that’s because most
of the liquid is out and we’re just
blowing bubbles at this point the
interesting thing is our tank is still
going it’s slowed down but it’s still
pumping out liquid propane look at this
down here so let’s take it apart and
play with the liquid itself
so there we go guys the goal of this
experiment was to extract liquid propane
and I think you could say we’ve done
that successfully but there are a couple
more quick experiments I want to try
before we go first off what will a
marshmallow do soaked in liquid propane
and what will happen if we light it off
okay here we go dunk number one
[Music]
[Music]
oh you hear that
sorry frozen solid cool
look how hard that is that’s cool that
froze pretty quick let’s leave it in
there for about another minute yeah
that’s about a minute let’s take it out
and smash it oh that’s hard nice
yeah it’s like really crispy on the
outside but still a bit of gooey on the
inside maybe I should have left that
little bit longer because now I just
made a mess everywhere let’s try that
again but this time I’m going to light
it off
all right that’s been about a minute you
can see this thing is actually so crispy
it chips off I’m going to light it up
away from the propane
[Music]
that burned out pretty quickly and even
scorch the whole thing so marshmallows
in liquid propane kind of cool but
there’s one bigger question on my mind
that I’d really like to see the results
– what would happen if we touched an
open flame to a glass of liquid propane
what the whole thing explode would it go
up in a big fireball or would it just
sit there and casually burn you and I
both know there’s only one way to find
out now I’m not exactly sure what’s
going to happen so I came out here to a
big cement pad I think I’m just going to
set this thing down and throw lit
matches into it so we can ignite it from
a distance sounds safe right here we go
mom I’m sure ooh oh that was so close
[Music]
there we go yes okay so that wasn’t
incredibly dangerous looks like it’s
still burning it is so there’s a little
flame in there but that’s not super
dangerous at all in fact you can barely
even see the flame if you look closely
you can actually see my match floating
at the bottom what if I roll it around a
little bit oh wow got the little bits of
marshmallow on the side they’re burning
Wow so it didn’t explode and this
actually makes sense because if you
think about it this whole container is
filled with propane like the bottle
itself there’s not much oxygen here so
it doesn’t actually ignite until it gets
up here where it meets the atmosphere
but if I shake it around I can agitate
that and create a lot more gas venting
off I get this thing closed with bigger
if we were to pour the stuff out on the
concrete it would have a lot more
surface area and probably create a much
more dramatic effect I’m actually going
to try it I’m going to pour this on the
pavement there we go
[Music]
cool and it’s gone in an instant
it’s just gone it would have sat there
and burned for indefinite amounts of
time in the glass but you throw it on
the concrete boom it’s gone that was
very cool let’s go ahead and summarize
what we just learned here today we know
that propane is a gas in its normal
state but when compressed and confined
to a container it turns into a liquid
we found that traditional propane
nozzles are designed to mix air with a
propane to give a nice teal blue color
but that if we remove the shroud that
mixes the air it won’t let off at all we
chopped off the tip of the nozzle with a
hacksaw and drilled out the inside and
found that rather than exploding the
large amount of gas being expelled
burned slowly with the air causing a
bright orange flame we opened the valve
all the way tipped it upside down a cup
and left it for about six minutes where
we extracted all the liquid propane and
got half a glass or about one cup
we tried freezing marshmallows to see
what they would do and found they got
really crispy on the outside but unless
they’re soaked longer they stay pretty
gummy on the inside
and finally we tried lighting matches
and throwing them into an open container
of liquid propane to see what happened
where we discover all that really
happens is it just slowly burns off the
top as its able to mix with the air so
there you have it guys now you know how
to modify your propane torches to
extract liquid propane
remember this stuff is extremely
flammable and this probably is an
experiment you really want to try at
home but I’m sure glad you join me for
this video and I’ll be looking for you
the next one talk to you then ha I guess
it comes out the back good to know
like made marshmallow snow that’s gonna
be buggered to clean up
[Music]
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