Chemistry Stuff

Will be having Chemistry Exam next Thursday. Need some luck and well.. Will give you something cool to watch regarding... C. H. E. M. I. S. T. R. Y....

1) Personally, I like soup. A lot. It tastes good and let's just say it serves my lazy needs of not wanting to chew on anything. So soup sounds like a great idea huh? But.. in Chemistry....

H2O + NaCl -> HCl + NaOH
Water + Common Salt -> Hydrochloric Acid + Sodium Hydroxide

Let's just say it seems pretty harmless. Hydrochloric acid and sodium hydroxide IF you have no idea what they are. But now, let's just say HCl has a pH value of around 1. And that is a very potent and highly acidic acid. Ok, now Sodium Hydroxide, pH value of 13. And that is a very very corrosive and a highly alkaline alkali. So if those two react, we will be ingesting highly acidic acids and highly alkaline alkali which doesn't sound too good, even if they neutralises each other (for your information, they do)

However, don't worry. Usually it happens in a reverse way, which means
HCl + NaOH -> H2O + NaCl

So, don't worry.. This probably doesn't happen. That's my assumption. You never know ;)

2) This is a video that is kind of viral on Facebook so I thought I will share this here before I explain anything. The adding of mercury (II) thiocyanate can be quite tedious so you can skip that if you want. But the reaction is really cool.

Now, getting freaked out or just bored.. You can see some of the uses and useful information here. Have fun reading :)
http://chemistry.about.com/od/fireworksprojects/a/pharaohs-snakes.htm

Chemistry don't seem that bad after all, huh? Hope this helps! Have fun :)