True beauty comes from within.



The name's Angeline but I prefer people calling me Angel instead.

I studied at Peixin Primary School and Yio Chu Kang Secondary School after that.
I'm 13 years old, and celebrates my birthday every 12th December.
I'm a Christian. God loves us all!
I have an older sister, Angela.
I'm single but not available.
I like to read.
I am flawed and imperfect. But I am me.

MY TUMBLR
MY TWITTER MY FACEBOOK

Friday, March 11, 2011

Been long since I've posted.



Hello!

I've got braces last week. And yeah my teeth's still kind of messed up but it will get better.


Anyway, yesterday and today are HBL days.
It's kind of boring cause the lessons are so long winded but complicated.
For example, Chemistry HBL. you can skip until the part where I'm talking.



H + O  H2O
However there are 2 problems with this chemical reaction.  First, because atoms like to have full valence shells, single H or O atoms are rare (and unhappy) creatures.  As we saw in the previous lesson, both hydrogen and oxygen react with themselves to form the molecules H2 and O2, respectively.  These hydrogen and oxygen molecules are much more common.  Given this correction, one might guess that the reaction looks like this:
H2 + O2 H2O
But we still have one problem.  As written, this equation tells us that 1 hydrogen molecule (with 2 H atoms) reacts with 1 oxygen molecule (with 2 O atoms) to form 1 water molecule (with 2 H atoms and 1 O atom).  In other words, we seem to have lost 1 O atom along the way!  To write a chemical reaction correctly, the number of atoms on the left side of a chemical equation has to be precisely balanced with the atoms on the right side of the equation.  How does this happen in our example?  In actuality, the O atom that we 'lost' reacts with a 2nd molecule of hydrogen to form a second molecule of water.  The reaction is therefore written:
   2H2 + O2 2H2O
In the chemical reaction above, the number in front of the molecule (called a coefficient) indicates how many molecules participate in the reaction.


     In order to write a correct chemical reaction, we must balance all of the atoms on the left side of the reaction with the atoms on the right side.  Let's look at another example.  Natural gas is primarily methane.  Methane (CH4) is a molecule in which 4 hydrogen atoms are bonded to one carbon atom.  If you have a gas stove, lighting the stove causes the methane to react with oxygen in the atmosphere to release heat and the atoms recombine to form carbon dioxide and water vapor.  The unbalanced chemical reaction would be:
CH4 + O2 CO2 + H2O
Look at the reaction atom by atom.  On the left side we find 1 carbon atom, and 1 on the right.  There are 4 hydrogen atoms on the left, but only 2 on the right.  Therefore, you know 2 water molecules must be formed.  Adding this coeffiecient we get:
CH4 + O2 CO2 + 2H2O
 Now we have to balance the oxygen atoms.  On the left you find 2 atoms, on the right 4 (2 in the CO2 molecule and 1 in each of 2 H2O molecules).  Therefore we need to start with 4 oxygen atoms, or 2 molecules.  The balanced equation would then be:
CH4 + 2O2 CO2 + 2H2O


Okay I hope this bores you cause it bores me.
I don't really understand it but what can I do?
So tried my best to make sense out of it can I did.

But whatever.
So I've been kind of down recently.
I feel so lost in this world, like I don't mean anything to anybody and without me the world's still gonna go round and everyone will still resume their everyday lives. It's so sad that nobody really cares about anybody except themselves. People are so hypocritical and selfish. They make me feel disgusted. They make me feel like I'm different.

I'm gonna go out soon and back again and continue doing HBL, which means coming home to be tortured.

No comments:

Post a Comment