what is the special properties of solder?
409174
solder is a low-melting point alloy;  the reason for the low melting point is, of course, that it is easier to melt so that a conducting connection can be made between components.  Many types of solder contain lead or tin, both low-melting metals.  A mixture ( like an alloy ) always has a lower melting point than the things you put into it. The m.p. of tin is about 232 C  and that of lead is 328 C.
587798
Specific heat varies with changes of composition and temperature. The specific heat of a material can be calculated by hand or by using a process simulator.\n\nThe attached link can be used to obtain specific heat (and other properties) for a handful of pure components.\n\nBest wishes !
286829
Soldering is when you heat a base material expand the surface atoms and introduce a substance [solder] that will mesh between the two. When this cools the base material will shrink around the solder and the two material will be bound to each other. Welding is when you heat two pieces of material to their melting point and the materials essentialy "mix" together. When they cool, you have essentialy one peice of material.
729762
The photomicrograph of pb-sn eutectic that you were wanting is at the link below:
1049396
They are called Surface-Mount resistors, and they look like little rectangular boxes about the size of breadcrumbs.  Of course it's hard to tell which ones are resistors since diodes and small capacitors also come in this size and style.  If you've broken one off they are hard to get back on properly.  You'll need to ask a friend who has surface mount soldering skills and an expensive soldering iron made exactly for such a task.
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http://polymer.bu.edu/pins/pins96.11.html\n\nhttp://chem.ch.huji.ac.il/~eugeniik/electrochemical_tutorials.htm
47770
Here is a link to a "Polymer Physical Property Comparison Chart."\nhttp://www.lauren.com/Technical_Info/physical_properties.asp
706732
Maleable and formatable\nand\ngood insulators. They both are properties of metals, which are bonded.\n\nStiff,viscous, and brittle are descriptions of an ionic bond like, for example NaCl, salt.
1134140
Depends on the thermoconductive properties of a certain material. Copper for example will heat up or cool down very fast.
841809
Actually the answer to this question is slightly more complicated than the average cynic would have it.  (By the way, sodium is a metal).\n\nMetals have several properties common to them:\n1.  They conduct electricity\n2.  They are ductile, and malleable\n3.  They are GENERALLY white and lustrous (few exceptions, such as copper, gold...lustrous but yellow/red)\n4.  They conduct electricity and heat very well.\n5.  They have generally low electronegativities compared to non-metals.\n\nFor non-metals, reverse these properties and you have a good physical description.  E.g.  They don't conduct electricity or heat very well, they're not malleable or ductile, they're generally not lustrous, their electronegativities are relatively high, etc.  \n\nYou find most metals GENERALLY to the left on the Periodic Table, while you find non-metals generally to the right.  That notable jagged line you see on many periodic table examples is said to divide the two categories, but it's a fuzzy line at best.  There are metalloids, for example, that contain SOME properties of each, making life interesting for us chemists who like to classify things.
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An alloy,not being a chemical compound exhibits individual properties of the combined metals .In addition certain desirable properties are gained by the alloy .
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i heard there are tiny metals ranging in size between\nmicrodots and pieces of wire 1/3rd of an inch.
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All "chips" are basically made the same way, from ultra pure glass, or silicon.  Then impurities are added to create different electrical properties.\n\nIf you would like to learn more follow the following link:
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one major characteristic is electrical conductivity.\npropensity to super conductivity.\nMelting/triple point.\nsolubility\ndensity\nbulk modulus\nheat capacity\nferromagnetism
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http://lakeaccess.org/russ/conductivity.htm
1093240
Most l/tops have their processors soldered onto the M/B howvere ther are some that aren't. and with those you might be able to upgrade tem to P4
441850
In soldering of metals, flux serves a threefold purpose: \n\nremoves oxidation from the surfaces to be soldered \n\nseals out air thus preventing further oxidation\n\nfacilitating amalgamation improves wetting characteristics of the liquid solder.