Year 12 2012 Chit Chat Thread (1 Viewer)

[bleakarcher]

Yeah it's alright, I don't mind it too much, but I'd prefer my other subs atm, and prelim chem was better so far (h-bonding, catalysts, rate of reaction etc.).

hahahahahahahaha omg, we haven't even touched catalysts, rate of reaction..

Definitely going ahead of my class this year.

 

[Funky Tiger]

I know who you are...

I am Carrotsticks

 

[SpiralFlex]

I am Carrotsticks

Evening Kaze

 

[theind1996]

hahahahahahahaha omg, we haven't even touched catalysts, rate of reaction..

Definitely going ahead of my class this year.

Ahaha really?

That was a really good bit of prelim lol.

We've started with a shit topic for maths 3u too lol (series and sequences fuckin hell lol).

 

[deswa1]

When u get to acidic environment, it gets good. But as soon as water came up i wanted to top myself. worst topic imo.

Yes omg- I hate water. Industrial is fun though imo

water management. kill me now. And electron density (not sure about the cloud bit, but i assume its just the same) refers to a high concentration of electrons in the double bond, making it more reactive due to the electrostatic repulsion of the electrons themselves.

oh yeh, and learning how to draw cellulose was a bitch!

This. And remembering colour transitions for indicators until someone taught me a retarded method that worked. And the first dotpoint in industrial about replacements of a natural material.

I am Carrotsticks

I KNEW it

 

[bleakarcher]

Ahaha really?

That was a really good bit of prelim lol.

We've started with a shit topic for maths 3u too lol (series and sequences fuckin hell lol).

lol why is it 'shit'?

 

[SpiralFlex]

lol why is it 'shit'?

It's one of the best topics ever.

 

[SpiralFlex]

Guys, how are your 4U classes? Morning or online?

 

[barbernator]

Yes omg- I hate water. Industrial is fun though imo



This. And remembering colour transitions for indicators until someone taught me a retarded method that worked. And the first dotpoint in industrial about replacements of a natural material.



I KNEW it

hahaha I still just remember for methyl orange and litmus that red seems like an acidy colour compared to yellow and blue so i go with that

 

[theind1996]

water management. kill me now. And electron density (not sure about the cloud bit, but i assume its just the same) refers to a high concentration of electrons in the double bond, making it more reactive due to the electrostatic repulsion of the electrons themselves.

oh yeh, and learning how to draw cellulose was a bitch!

Can you please explain this? I don't really get it. Soz.

 

[bleakarcher]

Guys, how are your 4U classes? Morning or online?

lol all my periods are afterschool, thank god I don't have to wake up in the morning early.

 

[nightweaver066]

water management. kill me now. And electron density (not sure about the cloud bit, but i assume its just the same) refers to a high concentration of electrons in the double bond, making it more reactive due to the electrostatic repulsion of the electrons themselves.

oh yeh, and learning how to draw cellulose was a bitch!

Beat her up, down, up, down... (geddit?)

 

[theind1996]

It's one of the best topics ever.

How?..

 

[theind1996]

Guys, how are your 4U classes? Morning or online?

Each Wednesday. 3:10 - 5:00 pm.

 

[bleakarcher]

This. And remembering colour transitions for indicators until someone taught me a retarded method that worked. And the first dotpoint in industrial about replacements of a natural material.

Sounds like this is going to be one hell of a bitch.

 

[nightweaver066]

Sounds like this is going to be one hell of a bitch.

Colour transitions is just rote learning, and the thing about replacements of a natural material actually isn't too bad if you do ammonia (you cover it in the 3rd module too)

 

[deswa1]

Can you please explain this? I don't really get it. Soz.

I look at it like this. So you've got the double electrons which makes it EXTRA negatively charged. Therefore positive stuff is extra attracted to it.

Sounds like this is going to be one hell of a bitch.

Nah chem is fun (srs) imo

 

[SpiralFlex]

How?..

It has many practical uses in real life such as banking and apparently medicine/pharmacy.

 

[SpiralFlex]

Each Wednesday. 3:10 - 5:00 pm.

WTH?! And I thought our school was worse for having 3-4:30 classes. Going home at night time is scary.

 

[barbernator]

Can you please explain this? I don't really get it. Soz.

So in a double bond in ethylene, each Carbon atom contributes 2 valence electrons to fill the outer shell of each atom. Now the electrons are paired (this is just rote learnt) and they move around in orbitals around both atoms. At any point in time, the electrons could be near C1 atom, near C2 or randomly orbitting anywhere in between. But rather than just sharing 1 pair of electrons, they are sharing 2, so at any point in time, there is going to be more electrons located inbetween the carbon atoms than anywhere else in the molecule, and hence there is a higher electron density. This is naturally more reactive, because the electrons already have a higher electrostatic repulsion, it requires less energy to get them to break and react with other substances.