Friday, April 10, 2009
It's been some time since I last updated this blog.
Firstly, I'm proud of myself for getting full marks on the Atomic Structure timed assignment. ((:
On the other hand, getting 10/25 for Atoms, Molecules & Stoichiometry made me reflect on what mistakes I made. )):
Ok, let me recap on what I've learnt.
Firstly,
Now I understand the meaning of Isotopes, Isoelectronics and Isotonics.
Isotopes: Same number of protons.
Isoelectronics: Same number of electrons.
Isotonics: Same number of neutrons.
Next, the definition of Ionisation Energy.
It is the minimum amount of energy required to remove the valence electrons from one mole of gaseous atoms to produce one mole of gaseous ions each with a charge of +1.
Shapes of orbitals.
I am also able to state the electronic configurations of different elements and ions.
Examples.
Electronic Configurations.
'Noble gas' Configurations.
Think I'll just stop here.
Till then,
Feekee signing off.
Next thursday, test on Chemical Bonding.Oh, and Ms Jee got Ng Hui Min and Foo Hui Min mixed up in a document on MI Link. =D
9:35 PM
chemistry time!
Tuesday, March 24, 2009
Started a little bit on Atomic Structure for chemistry today.
First thing that comes into my mind when Atomic Structure is being mentioned is this.
Protons, electrons and neutrons. Like for example the relative mass of each of them.
I could clearly remember that neutrons and protons have the same relative mass, which is 1, while electrons have a relative mass of 1/1840.
The table below summarises the particles.
The quiz on Atomic Structure was fun and interesting, there were some terms I wasn't sure of too.
Like for example "isoelectrons" and ions are less energically stable than their element.
Hope my doubts will be clarified in the next few lessons.
That's all for today.
Till then,
Feekee signing off.
8:00 PM
chemistry time!
Saturday, March 21, 2009
My choosen career...?
Ok, since I was in primary school, I have always wanted to be a teacher.
At that point of time, it wasn't specific to what kind of teacher I want to be, like for example, relief teacher, mathematics teacher, physics teacher or mother tongue teacher.
Till now, I still have that passion to be a teacher, a Mathematics teacher to be specific.
Why a mathematics teacher?
Firstly, why teacher?
It's because I like teaching, both theorically and practically. I want to educate and then have a sense of accomplishment. Like for example, an English teacher teaches his/her class how to write good paragraphs for their composition, the class then apply what they've learnt in their examinations, upon seeing the results, the teacher will have the sense of having done his/her job, which is teaching.
Secondly, why mathematics?
This is very simple, this is because mathematics is my favourite subject. Not only that, it challenges the mind because a mathematics question can be solved by more than 1 way.
Let me give you an example.
The question wants you to find x.
You can use 2 ways to solve this.
First way, use Pythagoras Theorem.
Secondly, you can use sin rule.
So there you have it, 2 ways to solve the question.
That's all I have to state.
Till then,
Feekee signing off.
6:33 PM
chemistry time!
Ok, firstly, my strengths and weaknesses.
StrengthsWriting Equations- Chemical Equations and Ionic Equations
- Example: Hydrochloric acid + Sodium Hydroxide --> Sodium Chloride + Water
- Chemical Equation: HCl(aq) + NaOH(aq) --> NaCl(aq) + H2O(l)
- Ionic Equation: H+(aq) + OH-(aq) --> H2O(l)
WeaknessesOxidation & Reduction -- Redox Reaction
- Not sure when it's a oxidation, reduction or redox reaction.
Macromolecules
- Not sure exactly what it Condensation Polymerisation.
Acids & Bases
- Can't differentiate Acidic, Amphoteric and Basix Oxides well.
So as you can see, there are more weaknesses than strengths.
Well, there are more to list out, but these are the significant ones.
So there you have it.
Till then,
Feekee signing off.
5:56 PM
chemistry time!
Thursday, March 12, 2009
Did titration during lab period.
Kept overshooting in my readings and my solution will turn pink, not pale pink. ):
In the 2nd experiment, my readings of burette are all above 50 cm.
Little did I know that I can top up the burette so that I can get the accurate readings. \:
I really need to revise on my labaratory skills, avoiding parallex error and stuffs.
I shall stop here then.
Till then,
Feekee signing off.
10:40 PM
chemistry time!
Friday, February 27, 2009
Recap on Cations, Anions, Covalent Compounds and Ionic Compounds.
I haven't been doing chemistry for the past few months, so this recap did woke my brain.
The test during the 2nd Chemistry Lesson was manageable, balancing equations.
If nothing goes wrong, I should get all that marks. (:
On the practise questions on Atoms, Moles & Stoichiometry, I was a little bit blur for some of the questions (caused by not touching chemistry for quite some time), but managed to understand slowly when Ms Jee go through the questions.
That's all about today's lesson,
Till then,
Feekee signing off. (:
12:46 PM
chemistry time!
