Chemistry

According to the structure of metals, how do they conduct electricity? I can't explain it if you can help me please.. The structure is about positive and negative..

one that make you to "oo la la" or "omg!" lol.

How can sulphur dioxide be collected?

What method can i use to make lead from lead(2)bromide?

HI... Now, I know ions are particles that carry a charge - then there are particles that are neutral (no?). So my question is: is there something extremely “more” monumental about ions then there is about neutral particles? Or are they both basically on the same playing field? Example: are ions the “particles” that are responsible for getting particles to move around? And are ions the only ones able to bond with other particles? Any suggestions, comments and opinions are appreciated... Thank you in advance...

I understand this analysis type, but this stupid pre-lab question is eluding me! "Mass measurements of the crucible, lid, and sample are performed only at room temperature. Why is this technique necessary for a gravimetric analysis?" Now, is it b.c. at room temperature we can be sure that the tests are consistent when we measure? Thanks for any insight -Steve

What is duplet rule?

I had a breakthrough today, so after I washed my hands and flushed the toilet, I went back to my office and solved a problem I've had for some time... I used to avoid any equations with a delta on the arrow or a catalyst when doing my powerpoint slides for teaching. Today I figured out how to do them. I downloaded a free evaluation version of "font creator", and edited the already very good RSC.ttf file which I downloaded from the RSC's website. I now have a right-hand arrow with a delta on top, and a right-hand arrow with a Pt on top. Any suggestions for other symbols I should create before my evaluation period runs out? When it's complete I'll make it availa…

I'm a total noob here, and I was working on something and came across a problem:-(. I think that I might have a solution:D, but I'm not sure if it would work. Anyways, my question is, could you bring plasma down to a temperature of about 1 mK using a laser (they've done it before) and have it stay that way? Thanks

Hi everyone, I was wondering why Na2Cr2O7 inhibits the corrosion of metallic iron and I was discussing this with some friends today but we were only able to make some educated guesses so I've been on the internet for a few hours now searching for an answer but I've had no success so far. I then remembered a comment my Chemistry teacher told me once about this great science forum, so now I find myself here for the first time with my first post. If anyone knows or has any idea why Na2Cr2O7 inhibits the corrosion of metallic iron then I'll be interested. Thanks

does anybody know how to make a Vacuum distillation setup, preferably a homemade one with out the expensive equipment

where is analyical chemistry forum??? chromatography forum???

Hello, I am working on a science fair project that involves growing bacteria in a Petri dish. I am going to build an incubator and would like to know how I should go about growing the bacteria. Should I just plop the samples in the incubator and turn it on, or is there more to it?

I am fairly illiterate when it comes to chemistry but I am doing my best to learn. Helium-3 is stable and is denoted as 3He. Ionized Helium-3 is denoted as 3He+2. What does it take to transform ionized 3He+2 into 3He? Is it possible?

Just a bit of fun here if you're broadband connection can handle it! The Periodic Mega Table - all 118 elements on one page! http://www.periodicvideos.com/mega_table.htm'>http://www.periodicvideos.com/mega_table.htm Or bit more of a normal version here http://www.periodicvideos.com/ Enjoy!

Hello everyone I thought before I could move to the daniel cell I have to understand this concept. 1. If we leave Mg solid electrode in water it says there is a tendency for Mg to dissolve into ions creating equilibrium Mg <-------> Mg2+ + 2e- I thought one half reaction cannot occur independant of the other half reaction. I mean oxidation and reduction should always occur at the same time. I understand here that forward is oxidation and backward is reduction. So is this true that this happens when you put Mg in water. 2. How about Mg+ ions in an solution would they create an equilibrium like this or is it only solids that can dissolve create this eq…

Here is the basic question, I can no find a cheap source of Potassium Nitrate within my local area. I have read on the internet about lengthy refinement methods and i have purchased the product of Ebay (for an expensive $15 a pound), however I am certain that it must be able to be attained cheaper. I have rang 5 nurseries and out of the three who knew what it was, only one stocked it. However the one who stocked it refused to sell it to me, openly expressing his assumptions that I will be using it to make explosives. anyway, the basic question is, "Where can i get KNO3 in Sydney". I hope that i dont sound like a complete idiot as this is my first post and i hope to bcome …

Is it possible to make salt NaCl by combining pure sodium and chlorine gas?

Probably the simplest question on chemistry you could ask, but why do so many definitions use the word in the very definition itself? You can't use the same word to describe a word! For example, this definition from dictionary.com chem·i·cal Audio Help /ˈkɛmɪkəl/ Pronunciation Key - Show Spelled Pronunciation[kem-i-kuhl] Pronunciation Key - Show IPA Pronunciation –noun 1. a substance produced by or used in a chemical process. 2. chemicals, Slang. narcotic or mind-altering drugs or substances. –adjective 3. of, used in, produced by, or concerned with chemistry or chemicals: a chemical formula; chemical agents. 4. used in chemical warfare: chemical weapons. …

Hey everyone, I have a rather odd question. I'm trying to make a tricky kind of interior mold for metal casting and I’m wondering if there's an accessible element or compound that has these particular properties - 1. It will perform sublimation at a fairly easily attainable pressure and a temp less then 300 degrees C. Pressure will probably have to be below 1 atm but it has to be something that I can create without super fancy gear. 2. I can easily transition it from a solid state to a liquid state by adding or subtracting heat with in the range of -20 degrees C to 200 degrees C. 3. It's not toxic etc. I can work with it ok. Any ideas? I'm guessing sens…

Hello everyone, I'm confused with the definition of an ion. Does an ion mean an atom that has lost or gained an electron or an atom that has the potential do so. For example Na+ + Cl- --------- NaCl In this case doesn't Na+ mean it has a potential to lose an electron. I mean NaCl would be formed if this happens. But if we write Na+ at the start doesn't it give the impression that Na+ has already lost an electron. 2nd example NH3 + H+ ---------- NH4 In this doesn't H+ mean it has already lost an electron (not has the potential to). Then acid base reaction occurs to form NH3 Can you understand my point isn't it bit inconsistent t…

What would the titration curve for the reaction of a diprotic acid and a strong base containing two hydroxide ions look like? Would it have two equivalence points, or just one? For example, if carbonic acid was titrated against barium hydroxide... I know that a titration curve for a diprotic acid and a strong base with one hydroxide like NaOH would have two equivalence points, but what happens when there are two?

I want a good link for viewing about metullurgy

Oxygen is the most abundant element ,isn't? But its percentage in the atmosphere(21%) is less than that of Nitrogen(78%) Then why nitrogen is not considered the most abundant element

Let us consider that a new element has been found. It has an atomic structure in such a way that it could only be placed on the s- block of the periodic table.Where can it be placed ,then? Will they form a new period?? Send me your suggestions, please