Good video and an easy to follow workup. Nice presentation and lab. morganbw - 27-1-2015 at 16:56
Nice jobTheChemiKid - 27-1-2015 at 17:04
In the description, you should try to include the quantities of what you used.j_sum1 - 27-1-2015 at 19:08
Loved it.
The format of demo first, explanation second worked well. Music, tone, pacing, camera work and editing all first rate.
My only criticism is the bit on sublimation. I could not really see how the device you used worked -- what route the gas flow took and how the
crystals ended up in the test tube. Nothing I couldn't look up, but if you are introducing apparatus then that piece needed some more detail.
I gave it to some of my students today. (First chem lesson of the year.) I can envisage one or two of them using this method as the basis for an
extended investigation in a few months time. There was certainly some interest.Zombie - 27-1-2015 at 19:49
We thoroughly enjoyed your work.
I do agree w/ Sum1's comment on the apparatus. I felt like I missed part of the movie. Just when the bad guy gets clipped...
Other than that one tiny detail it made me smile. Nice job!
Oh.... a ps. One of those Bubble Pipes would really give an air of old world scholar. Street cred as it were.
My only criticism is the bit on sublimation. I could not really see how the device you used worked -- what route the gas flow took and how the
crystals ended up in the test tube.
It looks like a makeshift cold finger. Also, the crystals end up on the outside of the test tube, not on the inside. The solid caffeine crystals are
heated under a vacuum causing them to sublime into their gas phase, which then re-condenses on the cool surface of the test tube. (I'm assuming the
tube was filled with something cold)
Excellent video, by the way. j_sum1 - 28-1-2015 at 01:34
Yeah that was my first thought too and that makes sense. But if i remember correctly the next shot looked like the crystals were inside.
It just wasn't clear to me.Zombie - 28-1-2015 at 17:58
You can form the crystals either way. Invert the test tube, and chill the outside or stand it normally, and chill the inside. It just depends on the
equipment you have
From the glimpse we had it appeared Lifeis used a silicone couple-r, suspending the test tube inside the heating container. The coolant was inside the
test tube, and the crystals were collected on the outside.
kecskesajt - 7-2-2015 at 01:56
Best video ever Nice appatus,great music, informative,high purity(maybe
foodgrade).
10/10
Its like...Skyrim with guns.
Nice appatus,great music, informative,high purity(maybe
foodgrade).