Metals Definition and 340 Threads

For my advanced higher physics investigation I've been given the topic of thermal conductivity. Basically I am going to investigate the thermal conductivity of different metals and compare them to the electrical resistance of the metal as I believe that those with low electrical resistance...

Hi, I'm a bit confused with the Wigner effect concept. This effect is normally associated to damages in moderator material typically graphite. But metallic cladding of the fuel element is also exposed to fast neutron, but Wigner effect is seldom being used as a term to explain the damages in...

I thought that as a general rule when writing out compound names (in full) involving a coordination metal, the charge of the coord metal must be stated in Roman Numerals. If nothing is specified than a charge of +1 is assumed. But I came across a compound involving zinc written zinc...

This is not a homeword question but an answer to a homework question of which I do not understand the reason for. The question was what are the differences between transition metals and main group metals. The answer was that transition metals can have colours but main group metals cannot. Why is...

Does anyone have a link or reference to a table on the effective mass of electrons in the common metals? thanks

hey. I am doing an investigation into reactions of acids with Mg. Firstly, iv investigated how order with respect to the acid varies for different acids i found that the orders for each of the acids are: Hydrochloric acid: 2 Sulphuric acid: 1 Phosphoric acid: 1.8 in an article, it said that...

Of the following 6 metals (Ca, Mg, Zn, Fe, Sn, Cu), which should be the most reactive toward oxygen? I don't understand how you determine this...what should I be looking at and/or calculating?

Hello, I was wondering if the Pauli Exclusion principle still applies to electrons in a metal. My intitution tells me no since a magnetic field acting on a metal causes the electron spin to realign but I am not sure. Thanks, -scott

How would I go about determining the specific heat of a metal (like Sodium) that reacts with water?

this question was in my material science exam . by the way I'm not very good at this subject

I was woundering? why did the free electron theory of metals fail (the free electron model)?

Hello, Assume that we have a pipe flowing with air of around 80 degrees F surrounded by air of approximately 140 degrees F. The pipe can be made out of three materials: Aluminum, Mild-Steel, and Stainless Steel. What material would it be best to use for the pipe in order for the air flowing...

I was wondering if it would be fair to say that the frequency at which x-rays start to penetrate a metal would be the plasma frequency associated with the electron density of the metal, i.e. the frequency given by http://scienceworld.wolfram.com/physics/PlasmaFrequency.html or whether some...

The following data shows the conductivity of 5 metals and the rate of change in gravitational potential energy due to induced current when the metal is passed through a electromagnetic field of 5.4mT on the end of a pendulum. you know, the classic eddy current experiment. I'm just wondering if...

Can someone please remind me how to convert values of Heat capacaty at constant pressure to heat capacity at constant volume? I believe it has something to do with the volume expansivity (1/V)*(dV/dT) at constant pressure, but I can't find my therm textbook and I can't remember how to proceed.

i know that if you want to figure out how many electrons an atom has on its outer ring (valence?), its 1 for group 1 (eg Na), 2 for group 2 (eg Mg), all the way to 7 for halogens and 8 for noble gases. however, how do you figure it out for transition metals in the middle? for example...

Which alkali metal forms preferentially an oxide rather than a peroxide or superoxide? a. Na b. Rb c. Li d. K Of the following, which element has the highest first ionization energy? a. Na b. Al c. P d. Cl Are these correct? Thanks.

Hi all. This is my first post. I'm a little eluded by this question given to me... "What does the photoeffect (photo-electric effect) tell about electrons bound in metals" It seems a bit too trivial to me. I'm tempted to just say that since the work function is proportional to how...

Why metals are often used in the form of alloys? Is that becuz the metals become stronger only...or there r other reasons.

I was wondering what kind of force is the force of gravity ? Is there a subcategory of that specific force ? (Got any internet documentation about it, too ? It would be nice.) I got another question: in the air, are there particle of metals (negligeable when studying the air's components)...

Without getting into too much detail on what I am building, here is what I am basically asking, Will Soidum Hydroxide (NaOH) corrode brass? I am thinking yes. Bras is made up of zinc (which I know NaOH will corrode) and copper (I am not sure about copper). Basically, I have a value, made...

I feel like this is something I should already know, but I don’t even know what to search for to find an explanation. Solid pure metals like piece of Iron, Copper, or Nickel are made up of atoms all the same (Cu, Fe, or Ni). Each atom has a positive nucleus surrounded by a field of...

A solution is found to have varying quantities of silver, barium and iron (III) ions. Suggest a procedure for seperating the ions by precipitation. Ok ...silver is +1, barium is +2, and iron (III) is +3... so I would have to add anions of the same value (but negative) to the solution in...

A 38.0 g copper ring has a diameter of 2.54000 cm at its temperature of 0°C. An aluminum sphere has a diameter of 2.54508 cm at its temperature of 108°C. The sphere is placed on top of the ring as in the figure, and the two are allowed to come to thermal equilibrium, with no heat lost to the...

Hey guys, i just have some quick questions I'm having trouble with. I'm in a hurry right now so i'll come back tommorow and type up what I was thinking about them, here are the questions. 1) Farmers use ferilizers mainly to replace depleted nutrients in the soil. Liquid ammnia and ammonium...

Hi, just looking into metals and came across silver copper alloy having a density of 9900 - 1.05e4 kg per cubic metre. I have been told me that the value of e is (probably quite randomly) 2.71 and others said that it is an abbreviation for 0, eg. 1,000,000 could be written as 1e6 or 10,000 as...

Can someone explain the concept of recrystallization in metals to me? I'm having some trouble understanding what actually happens in the material during this process, and also what causes it to happen...

would anyone have links why metals generally exist as ores in the Earth's crust, and not as pure metals? I've googled it, nothing popped up. I've checked my textbook, nothing. Why do they ask questions you can't answer. Thanks guys for all your help AEK

Our lecture on the Physics of Solid State raised a question. Professor postulated that the condition of the existence of metals is "Debay radius<Bohr radius", but the explanation was quite unclear. Could someone help me?

Chloroform is said to react violently with both metals (Al, Na, Li, Mg, K, Fe, Zn) and e.g. sodium methoxide (CH3ONa). Does anyone know more about this? What happens? Formation of e.g. CCl3Na with release of H2? Or CHCl2Na+NaCl? And how about reaction with alkoxides? Does chloroform react...

If someday we discover how to mine metals from the core, will it have any effect on the magnetic field or the climate of the Earth due to reduction of heat in the core as the metal mined will be hot and will slowly drain the heat of the core.

What about the molecules and bonds of transition metals make them (such as gold) such good conductors? I'm in AP chemistry, so we may have gone over it, but I don't know right now.

It has been studied that excessive amounts of heavy metal elements are found in brains of patients who had Alzhemiers,Parkinsons,etc. Researchers don't know if this is a relationship/correlation because patients without these dieases are found to have high amounts of these same elements. Does...

"Rusty metal is a favourite place for C. tetani to hang out, and in fact puncture wounds with rusty nails are a common cause of tetanus." We all know this, but why is that, why C. tetani has this affection fot rusty metals ? C. tetani is anaerobe, and I wonder does this living in iron oxide...

I'm writing some high school physics teaching animations and I need to make sure I have the right idea for why increasing the temperature of a metal increases its resistance. It's high school, so I need some classical analogy which isn't just blatantly wrong or stupid. The explanations I...

metals: physical properties - chemical properties - nonmetals: physical properties - chemical properties - i will be very thankful to anyone who fill up this table and explain the difference between chemical and physical properties and another thing.. i...

why can certain metals be magnetised but others like copper cannot? what what is the difference between permanent magnet and temporary magnets?

Hey, can anyone direct me to information on the role of the following metals in living systems? If you can, please state specific effects and reccomendations of importance(in the body). Zn, Mg, Fe

Can any1 explain this process and why it supposedly only works on metals.

Hello all ... Please , I won't ANY information about this issue . Please help me , I have to finish this today