chemi

Originally Posted by Herme3

That is completely against my goal in life. My goal is to find the perfect person, and never breakup with her.

That's actually quite dangerous...say if you do find the perfect person (and she's available too), how do you know if she will see you as the perfect one for her as well? You might end up getting hurt even if you do find the perfect one.

Either way, there's risk involved:

1) no dating - you think you are not emotionally hurt, but everytime you get to know a person and realizes that this is THE girl with THE perfect personality for you, but sadly, she's going out with some other guy. (tell me you don't feel any pain?)

2) friendship --> perfect one - finally after 5 years of buddying, you think the girl's perfect for you, and you think she feels the same way...until you two start dating (to me, dating is just friendship with physical intimacy) --> a) everything works out...great! you live happily ever after. b) one of you guys doesn't feel the other one's "perfect" anymore...one of you can get hurt.

3) dating --> like you said, could lead to disaster, but can also lead to lifetime happiness

Basically, you can never get rid of the possibility of getting hurt or being hurt emotionally.

(it's not just dating, e.g. workplace, school, getting into a fight at the supermarket...etc.)

(I haven't finished reading all 271 posts, so if anything is redundant...then it's redundant)

Is phi always such a gentleman?

Lance started most of his threads in General disscussion and Project 1: The New World

But why do that if you have online references? Chances are, what we post may not cover as much as other websites has already posted.

Exactly, so we want to make SFN just as good as other websites. Get more people to come to SFN and learn things rather than other online references. I mean it's a science forum, so it should be academically challenging (sounds crazy but if we all help, it'll be a damn good encyclopedia)

this was from Dak's thread

but other than that, the only majour effort would be in marking the tests to see what areas they need to improve, but the tests could be constructed with ease-of-marking in mind (multiple-choice-questions for example).

I like your idea too, classroom/tutorial are both similar and could work. As for marking the tests, we could just scan our own tests/answer sheets, and attach them to the posts.

the only thing we have to worry about is how this whole thing will produce indolence among students. It's ok to have a second, more casual, reference concerning science but what happens if the forum becomes a subsitute for textbooks? pretty soon, the "teachers" will end up explaining every general detail that should of been known. I don't think most people on this forum can afford that kind of time on their hands. Im just skeptical of those who want to get their homework done as fast as possible. If they were out of the pic, then by all means, im for it.

I see what you mean lan418, but I think you missed my point. The reason why I think a tutorial forum would be better than the homework help forum is because it's not a one on one thing where one person has to spend hours explaining a whole section of science to one other person.

In the new forum, a person starts a thread on the topic they want to share (e.g. organic nomenclature), others can input more indepth info. So now if a person is having trouble with organic equations, he/she can come to SFN and read the lesson and learn. It's not like you are doing the homework for people where they ask a question and you answer it, it's more like an online SFN encyclopedia for students as a reference.

One of the main aims of particle physics in the future is to prove the existence or nonexistence of the Higgs boson. Neutrinos are interesting as well.

http://www.fnal.gov/pub/inquiring/matter/future/index.html

It's been bugging me how there can be "the smallest particle."

I think if we were to cut/crush/heat the particle enough it would be divided into subparticles.

yeah, it's like they say you can break a bar magnet many times until it reaches to one dipole, maybe dipoles can be further divided?

Chemi, Wikipedia.com.

 

Use your new knowledge well.

big deal, I'm just saying the homework help forum could use a little adjustment. Besides the point is to get more ppl to SFN, not to Wikipedia.

Nevermind, dihydrogen monoxide is definitely not heavy water. Didn't see the little 2 there

Oh yeah, the only other alternative for Water I have heard is hydrogen hydroxide...

http://mineral.galleries.com/minera...des/ice/ice.htm

http://www.newton.dep.anl.gov/askasci/chem99/chem99659.htm

https://cindasdata.com/Applications/TPMD/TOC/?sLetter=H (go down to hydrogen oxide)

well, hydrogen oxide is another one though I'm not sure why.

That site is a joke site. Dihydrogen monoxide is water.

Have a look at http://www.dhmo.org/msdsdhmo.html

also a joke site...sigh..

but still, why do they call water hydrogen oxide? Is it another short form/ common name?

i dont think the iupac name would be dihydrogen monoxide. i believe it would be hydrogen oxide.

Yes, it is hydrogen oxide for sure

http://mineral.galleries.com/minerals/oxides/ice/ice.htm

https://cindasdata.com/Applications/TPMD/TOC/?sLetter=H

but I'm still not sure why they drop the di- and mon- on the naming

What's weird is that dihydrogen monoxide doesn't seem to be water according to this website

http://www.snopes.com/toxins/dhmo.htm

"Dihydrogen monoxide is colorless, odorless, tasteless, and kills uncounted thousands of people every year. Most of these deaths are caused by accidental inhalation of DHMO, but the dangers of dihydrogen monoxide do not end there. Prolonged exposure to its solid form causes severe tissue damage. Symptoms of DHMO ingestion can include excessive sweating and urination, and possibly a bloated feeling, nausea, vomiting and body electrolyte imbalance. For those who have become dependent, DHMO withdrawal means certain death."

we really need an organic chemistry forum. orgo is quite possibly the most relevant science in today's world

That would be great.

I also noticed that not many people post replies in the homework help forum, maybe the questions are too difficult, or people just don't want to spend a lot of time explaining to one person on a whole section of science. I think we could have a tutorial forum, basically anyone who feels confident can start a lesson (teaching others about a specific science topic) this way others can learn new things without resorting to textbooks. People could make comments or add new info to the lesson. By the end we might be able to have our own SFN encyclopedia, this will attract more people to do their projects, homework, research at SFN.

I mean science forums shouldn't be just about expressing thoughts and opinions, it's also about sharing knowledge with others. (I know we learn things through conversations, but it would be so easy to just go to the forum, find the topic that you want to learn, and read+study+chat+have your homework done without the desperate waiting in the homework help forum.)

We can even divide the forum into grades (from grade 7 to the end university), areas of science etc. This way no one would feel embarrassed when trying to ask/find out info on a lower science level.

cool, it works

http://www.scienceforums.net/forums/attachment.php?attachmentid=813&stc=1

ok, my friend told me a longgggggggggggggg way to attach your own images (that doesn't have a url address)

you have put your image on a web basically, you need your msn messenger to do this.

1. sign in to msn messenger, click on my space, fill out the form, so now you have your own website

2. now click add entry, a new page will appear, at the bottom left corner click add photos

3.if you can't find where is add entry, then go back to home and click edit your space, this way you'll see add entry for sure

4. now after you clicked add photos, just find your file/image and look on the left upper corner, there's a little box for each file, click on it, a check mark will appear

5. click upload now (right upper corner of the page), now click publish entry, click preview my space (right upper corner)

6. now you just click on the picture and a new page will appear, your picture is on a url adress now!

thanks dak

went into the male's washroom 2 times in a row (forgot to read the sign)

How did I forget? I followed another girl into the washroom. (only to realize that when she turned around, it was a guy )

How do you attach images and files? When I click insert image it shows script prompt and then (I'm not good with codes)

XVII/O+/ (dms): 43° 40' 0 N, 79° 25' 0 W

my theory could explain the fact that the salt will be disolved a lot faster. But it doesn't explain why there can disolve more of the salt !!?

when a solid is put into the water, it becomes hydrated(surrounded by water molecules), so the higher the temperature, the more kinetic energy the water molecules have to break apart more bonds in the solute--> solvents with higher temperature dissolve more solute because it has the energy to break more bonds of the solute (in less amount of time also).

The polarity of the solid also matters, the more polar the solute, the better it'll dissolve in water since water is polar (like dissolves like). so a hot water would dissolve more polar solutes than non-polar solutes.

I found a powerpoint site on acids & bases. Slides 6-12 explained the factors that affect the strength and acidity of acids and bases, I think it'll help with this.

Just go to google and search (acidity of H3PO4, H3PO3, it's the first one on the page) or use the html version(not very clear, missing images)

http://64.233.167.104/search?q=cache:jh-SwLZfPB8J:web.uccs.edu/bgaddis/chem106/ch15.ppt+acidity+of+H3PO4,+H3PO3&hl=en

I guess this would be like 2-isopropyl alcohol but couldn't it be called 2-Propanol? Seems like a easyer name to me

iso means equal/balance # of carbons and hydrogens on both sides, since propyl contains 3 carbons, the triple bond must be in the 2nd carbon (in the middle) no matter which way you start to count it, it's always going to be the 2nd carbon. That's why we don't need to put the 2- there. (isopropyl is the exception)

hey , i can't see why this is called

 

2-Methylethyl

 

or why it is then called ISOPROPYl

 

if someone has the time, could the please explain this too me ?

Isopropyl is a term in organic chemistry to refer to a three carbon structure.

It is a variant of propyl, which refers to three carbons added at one end(triple bonds).

By contrast, isopropyl refers to a three carbon structure that is attached in the middle. iso (means both sides are equal/balanced) For example, in isopropyl alcohol: (I can't get the image, but you can check out the website)

http://en.wikipedia.org/wiki/Isopropyl

... the '-OH' alcohol functional group is added at the middle of the three carbon structure. (It may seem counterintuitive to name the molecule based upon such a small part of it, but by the rules of organic chemistry nomenclature, alcohols are higher priorities than alkenes, so the three carbon group is interpreted as a substituent of the alcohol.

hey is the correct name for this

(Z)-3-Ethyl-4-methyl-pent-2-ene

or

(E)-3-Ethyl-4-methyl-pent-2-ene

 

 

i thought it'd be (E)... but yeah...

 

what do you chemistry wizs' think?

The answer should be trans-3-ethyl-4-methyl-2-pentene. Yes, the bond could rotate, but they use cis and trans only for drawing purposes. This tells you exactly how to place the hydrogens in the diagram.

wat in the world is cis and trans?

cis: hydrogens (attached to the carbons) are placed on the same side of the plane

trans: hydrogens (attached to the carbons) are placed on the opposite sides of the plane

Actually, since you don't believe in God, then just challenge the pastor or question him until he/she loses or until you lose. This way you'll know for sure whether you want to believe in Christianity or not. On the other hand, if somehow you are convinced by the pastor (or church members), you'll be baptized with true faith. So you won't regret your decision.

nevermind, there's no synonym for Synepy.

hood=canopy

canary