Dissolving calcium carbonate (aka chalk) is cooler than I thought it would be. One drop of concentrated hydrochloric acid makes it go *ffzzz*. Another drop and *fzzz*. A squirt makes large bubbles and *ffffzzzzzzzzzzzz*. And after I put in the entire 3 mL capacity of the plastic pipette, I swirled around the solution, and there were even more *ffzzz*! Internally, I was giggling after every *fffzzz*. At first, the powder looked like it was being bombarded by bombs. Then it looked like paste. Then, it looked like milk. Now it is looking like murky white water. Except now, the fascination of hearing the *fzzz* is gone and replaced with boredom as I get tired of sitting behind the fume hood with the stuffy neoprene glove dripping acid and drop at a time for 1 hour all so that I can dissolve just a handful of white powder. And guess what? It takes forever to dissolve that thing. Not cool.
In the periodicvideos channel of youtube, they made a Valentines special about chocolates and roses. Just posting it ’cause they are talking about my favorite food, chocolate.
Haha, get it? Because mole day was yesterday! Ok, you can shoot me in the head now for making such a lame joke. According to this post (Adventures in Ethic and Science), that was yesterday. To commemorate it… It is the subject of today’s…
This is the 6th edition of *drum rolls* Pop Quizz! A quizz in which the answers are not obvious and if it is obvious, and you get it wrong, you are rebuked at!!!
Occasionally, I will occasionally ask a question, and the reader will answer them! For every wrong answer, I will consider one of your comments a spam. Ha! See how you like that suckers! (I am kidding, of course) Sometimes, a wrong answer won’t invite rage, some really obvious one will, and you will be called an idiot if you can’t answer the obvious one. In fact, I may have to make an extra page on my blog for the lists of idiots. 🙂
So, the question of the day is… How much is a mole? And for extra credit, what is the unit based on? Read the rest of this entry »
Secondly, there is a cool article about the structure of ice cream. (thanks to this blog) Basically, one has to cool the ice cream quick enough so that its ice crystal don’t get big. If it does, then the texture is different, and tasting is also related to texture, so it will be yucky.
Thirdly, an article about a cool nebula (from badastronomy) and this beautiful picture:
And finally, the great “what is a planet” discussion right here.