Preliminary 2012 Chemistry Marathon (1 Viewer)

[planino]

Is planino a weird anagram of yours for piano lady

You may be a superSAIyan (very original), but I'm going to Kamekamehaa you tomorrow for that

 

[superSAIyan2]

dude that is original and its kamehameha

can we get on with the marathon

 

[planino]

Yeah we should. Since you answered the last one, ask the next one

 

[superSAIyan2]

Yeah we should. Since you answered the last one, ask the next one

I already did - define avogadros law

 

[premskies]

man I am so screwed for chemistry. does anybody know of any good tutors? ie. with experience.

 

[girlworld_club]

Give three examples of each: compounds and elements found in the house.

Also a question for the OP, ...1996 (you know who you are). Have you studied for chemistry? and are all these answers you're giving purely from recalling or do you use the textbook for help?

 

[theind1996]

Give three examples of each: compounds and elements found in the house.

Also a question for the OP, ...1996 (you know who you are). Have you studied for chemistry? and are all these answers you're giving purely from recalling or do you use the textbook for help?

elements: hydrogen (water), oxygen (water) , carbon (pencils)
compounds: acetic acid (vinegar - CH3COOH-), water (H20), carbon dioxide (CO2)

and yes, i'm genuinely answering from knowledge. and no, i'm not recalling, i'm understanding. they're 2 different things. i haven't studied in detail, but once i understand the main concepts, i don't find it difficult to answer (not trying to be cocky).

why'd u think that?

Which elements on the periodic table are the most reactive? (1 mark)

 

[girlworld_club]

The alkalili metals. You're answer are exceptional by the way, keep up the good work.

 

[Eg155]

Flourine is the most reactive *element* but yes, in terms of groups Alkali Metals...

 

[planino]

elements: hydrogen (water), oxygen (water) , carbon (pencils)
compounds: acetic acid (vinegar - CH3COOH-), water (H20), carbon dioxide (CO2)

and yes, i'm genuinely answering from knowledge. and no, i'm not recalling, i'm understanding. they're 2 different things. i haven't studied in detail, but once i understand the main concepts, i don't find it difficult to answer (not trying to be cocky).

why'd u think that?

Which elements on the periodic table are the most reactive? (1 mark)

Non metals: Fluorine
Metals: Caesium

 

[nightweaver066]

Non metals: Fluorine
Metals: Caesium

Wouldn't francium be a more reactive metal?

 

[theind1996]

Non metals: Fluorine
Metals: Caesium

Metal - Francium

http://www.youtube.com/watch?v=SjowQJMS-W4

List method during the decomposition of AgCl practical and list any safety issues and all equipment (7 marks)

 

[planino]

Wouldn't francium be a more reactive metal?

Francium's radioactivity hinders it from being the least electronegative metal (so Caesium's the most electronegative), so I'm assuming this also hinders it from being the most reactive as well since Caesium is not radioactive. Francium is still one of the most reactive metals though

 

[superSAIyan2]

Francium's radioactivity hinders it from being the least electronegative metal (so Caesium's the most electronegative), so I'm assuming this also hinders it from being the most reactive as well since Caesium is not radioactive. Francium is still one of the most reactive metals though

I think you mean Caesium's the least electronegative : If Francium's radioactivity stops it from being the least electronegative then wouldnt Caesium be least electronegative - NOT MOST ELECTRONEGATIVE. Metals generally have the tendency to lose electrons and are electropositive. I'm sure your school / expensive tutor would have taught you that.

 

[planino]

I think you mean Caesium's the least electronegative : If Francium's radioactivity stops it from being the least electronegative then wouldnt Caesium be least electronegative - NOT MOST ELECTRONEGATIVE. Metals generally have the tendency to lose electrons and are electropositive. I'm sure your school / expensive tutor would have taught you that.

eat a dick
Shouldn't you be studying for Studies of Religion?

 

[theind1996]

Both of you guys should stop arguing. This is not a place for you to joke around/take out your anger on each other. Every post should be relevant to Chemistry and related queries or answers to given questions.

And no, it's Francium. Especially if nightweaver says so.

There is also a 7 marker unanswered from my previous post.

 

[nightweaver066]

Both of you guys should stop arguing. This is not a place for you to joke around/take out your anger on each other. Every post should be relevant to Chemistry and related queries or answers to given questions.

And no, it's Francium. Especially if nightweaver says so.

There is also a 7 marker unanswered from my previous post.

I shouldn't be given any authority on this matter lol.

In terms of the preliminary HSC course, you learn that the more electron shells there are, the further are the valence electrons from the nucleus so the more electropositive it becomes.

So theoretically, from what we have learnt at school, francium is more reactive than caesium.

 

[Kimyia]

I shouldn't be given any authority on this matter lol.

In terms of the preliminary HSC course, you learn that the more electron shells there are, the further are the valence electrons from the nucleus so the more electropositive it becomes.

So theoretically, from what we have learnt at school, francium is more reactive than caesium.

I believe this is right. Theoretically, francium is more reactive. In practical situations however, you would just use caesium.

 

[planino]

Both of you guys should stop arguing. This is not a place for you to joke around

ok

nightweaver066

Kimyia

Yeah I should write francium based on what I've learnt from school (and on here) instead of some magazine whilst waiting at a haircut place. I hope we do radioactivity in depth in year 12 though

 

[nightweaver066]

ok



Yeah I should write francium based on what I've learnt from school (and on here) instead of some magazine whilst waiting at a haircut place. I hope we do radioactivity in depth in year 12 though

Nope you don't really do it in depth other than nuclear decay and production and uses of radioisotopes.