A metal is an element, compound, or alloy that is a good conductor of both electricity and heat.

learn more… | top users | synonyms

3
votes
1answer
102 views

Why do ion cores not move in a metal?

The delocalized electrons in a metal move about because of the electrostatic attractions between them and many different positive ion cores. But why does the same not occur with the ion cores ...
2
votes
1answer
47 views

Separate precious metals from catalytic converter

I am looking to separate the small quantities of platinum and palladium in a catalytic converter. However since these are very inert metals I am unsure how to proceed about doing so. Melting the ...
-5
votes
0answers
26 views

Chemical reactions between metals and acids and bases [closed]

How do the following reactions physically appear: $\ce{Fe}$ with $\ce{H2SO4}$ $\ce{Al}$ with $\ce{NaOH}$
1
vote
1answer
47 views

De-ionized water [duplicate]

Is de-ionized water more corrosive to metals than tap water? I have read that it "wants" the removed ions back and will aggressively take them from any available source.
-3
votes
0answers
27 views

Reactivity of copper and zinc [duplicate]

In copper, the $4s$ sub-shell is half filled and the $3d$ sub-shell is fully filled, but in zinc both the $4s$ and $3d$ sub-shells are fully filled, though zinc is more reactive than copper, why?
9
votes
1answer
102 views

Jahn-Teller Metal : The new state of matter

Recently it came in the news that scientists have discovered a new state of matter called Jahn-Teller metal. I tried reading up on it but couldn't understand it clearly. Please explain in simple ...
3
votes
1answer
31 views

What would a diagram of the metal lattice structure of CuSO4 look like?

Just as $\ce{NaCl}$ would look like this: What would a diagram of $\ce{CuSO4}$ look like?
12
votes
1answer
118 views

What chemical characteristics give types of steel their properties?

I am a mechanical engineer, and just like everyone else I had classes on the crystal structure of metals, phase diagrams, and the various heat treatments. However, even after diving back into that ...
4
votes
1answer
47 views

Is there a characteristic that characterizes all, and only, metals?

The Wikipedia article on metals describes them as elements whose polyatomic configurations* exhibit any one of a number of patterns. I could not discern any property that characterized all the ...
6
votes
2answers
81 views

Why is a tin can that appears like galvanised steel rusting?

I bought a canned pineapple and finished the content. The part of the can that is in contact with the liquid appears like galvanized steel (crystalline surface or spangles sort of appearance), while ...
3
votes
1answer
26 views

Determining spin of metal complex

Is there any way to determine the spin of $\ce{[Fe(OH)6]^{4-}}$ without looking at the spectrochemical series?
-2
votes
0answers
17 views

When a substance loses electrons why does its oxidation state increase?

My thought is that when a substance looses electron(s) its metallic character increases and hence it combines with non-metallic elements like oxygen, so we have this statement- "When a substance loses ...
3
votes
0answers
72 views

In solid Iron, what is the charge of the positive atom? [duplicate]

I'm familiar with the sea model of metals. What I'm curious about is: exactly how many electrons are lost by the iron, to be absorbed into the sea of electrons? For a general metal, how many electrons ...
0
votes
2answers
80 views

Titration of C₄H₆O₂

$\ce{C4H6O2}$ (10.75 g) was dissolved in water (250 cm3) and then a 20 cm3 sample was titrated against an alkali metal hydroxide solution. This required 17.35 cm3 of the alkali. What was the ...
3
votes
1answer
58 views

Why does mercury not form amalgam with iron?

I am learning about solutions and while giving an example of a liquid (solute) and a solid (solvent), my teacher told us that mercury forms an amalgam with all the metals except iron. I want to know ...
6
votes
2answers
46 views

What is the difference between tempering and hardening metals and their end products?

I think I've heard hardening is when you dunk red-hot metal into cold water, and tempering is when you take that hardened metal, heat it slightly, and then let it cool slowly. However what is the ...
3
votes
1answer
44 views

How does radiation facilitate the formation of tetravalent iron?

In reading the article abstract What Oxidation State of Iron Determines the Amethyst Colour?, the author states that in regards to the gemstone amethyst, from clear quartz: The crystal was ...
2
votes
0answers
33 views

Spectral reflectance identification of types of iron rust

According to the Wikipedia page about rust, there are red and green types of rust that occur on iron. Red rust is the reaction with oxygen and water and the green with chlorine (in oxygen poor ...
3
votes
1answer
70 views

Can we picture metallic bonding as an equilibrium between electrons and cations?

Can we picture metallic bonding as an equilibrium between electrons and cations? Suppose: $$\ce{Al^3+ + 3e- <=> Al}$$
3
votes
1answer
62 views

Structure of a Metal in gas phase

If we have a metal in gas phase. Suppose lets say Aluminum. Aluminum has delocalised electrons. There is Al cation -electron attraction in it. Its easier to visualize Al atomic structure in solid ...
2
votes
1answer
44 views

Interaction between metalic nanoparticles and aggregation

I can't find any publication to deal with aggregation of colloidal metalic nanoparticles. What type of interaction(s) is/are there between aqeous metalic nanoparticles which give(s) rise to ...
0
votes
1answer
46 views

What happens in an acid and metal reaction where the acid is twice as concentrated and the metal twice as much in quantity?

Experiment A 3cm metal 0.5M acid 5 degrees temperature change Experiment B 6cm metal 1M acid How much would the temperature change be, and how much faster or slower would the reaction take ...
11
votes
1answer
704 views

Can metals have a net negative charge

Normal metals like sodium or Calcium have a positive charge as $\ce{Na}^+$ or $\ce{Ca}^{2+}$. Transition metals have a loot of variable oxidation states. Yesterday I read about Iridium in Wikipedia ...
-1
votes
1answer
45 views

Why does aluminium foil does not react with water molecules in a microwave? [closed]

Why does aluminium foil does not react with water molecules of food in a microwave?
7
votes
2answers
61 views

What are the best chemical liquids to clean metallic surfaces?

I'm just a simple man curious about things. I've no big understanding of chemistry. I had this question today in mind. What chemicals could I use to achieve the cleanest metallic surface? For ...
3
votes
0answers
54 views

What is the IUPAC nomenclature for Intermetallic Compounds?

So IUPAC has a system for naming organic compounds, ionic compounds, and inorganic compounds. I have seen something vaguely suggesting there is one for intermetallic compounds, such as: $$\ce{Fe-Co}$$ ...
3
votes
1answer
51 views

Separating metals out of a magnet

I have acquired the crushed magnet out of a motor I was given. If I'm correct that the magnet is NdFeB magnet, how could I separate out all the metals into a pure or oxide form? And for hard drive ...
0
votes
1answer
68 views

Can we make Gold in a Lab? [duplicate]

Can we make Gold in a Lab? Is it possible to make changes in metals that will create Gold? and How? I have tried to search something related to this but didn't get any good results. Thanks in Advance
-2
votes
1answer
40 views

Trying to figure out what these elements have in common [closed]

I have an old periodic table and I marked five metals from groups 1A and 2A with dots to indicate something about them. Only all this time later I can't figure out what exactly it was. I've been ...
0
votes
0answers
19 views

What's the reason for the static cling of alkaline earth metal pieces?

I've noticed when dealing with small strontium pieces in air (~1-10mg pieces, I think) that they seem to get charged and tend to jump around a lot when you're trying to move them from a polyethylene ...
1
vote
2answers
517 views

Why is zinc more reactive than copper?

In terms of electronegativity, from what I understand electronegativity increases going across the period, so surely this should mean that zinc less readily loses its outer shell electrons than ...
5
votes
1answer
58 views

Structure of Metallic Hydrogen

I am simply curious what the theoretical arrangement of metallic hydrogen would be. I found this article which gives a picture, but I don't understand what the labels mean (e.g. is H5 an isotope, ...
1
vote
1answer
42 views

Comparing the strength of metallic bonds

Why is the boiling point of iron higher than magnesium?
6
votes
1answer
101 views

Solubility of gold salt solution?

I was wondering what salts of gold are soluble and which are insoluble. From what I understand, silver is soluble as silver nitrate but insoluble as most other common salts like chlorides and ...
1
vote
1answer
45 views

The anode and cathode when corrosion happens

Let's say $\ce{Fe}$ reacts with $\ce{Cu^{2+}}$ ions. $\ce{Fe}$ would oxidize and therefore give electrons to $\ce{Cu^{2+}}$so that: $$\ce{Fe-> Fe^{2+} +2e-}$$ $$\ce{Cu^{2+} +2e^- ->Cu}$$ The ...
7
votes
2answers
180 views

What's the type of bonding in La@C60?

Endohedral fullerene is the name given to a brand new chemical species with the following attributes: A metal, usually a transition metal, is "trapped" inside the fullerene, like $\ce{C60}$ and ...
0
votes
1answer
15 views

Replacement For RF sputtering

In my experimental work, I'm following an article. It said that: A 30 nm ZnO seed layer was deposited on the glass substrates by RF sputtering of a ZnO target at room temperature. But I haven't ...
2
votes
1answer
54 views

Why does lithium move on the surface of water during the reaction?

If someone asks me to number the most notable "textbook experiments" I would definitely name "the comparison of the reactions of alkali metals with water" among the most favorites. We just happened ...
-1
votes
1answer
66 views

Will isopropyl alcohol dissolve the coating/paint of a notebook?

The notebook is a Dell Inspiron 6400 and the coating/paint is the silver on the palmrest and back cover. It says 99,4% on the container of the isopropyl alcohol.
6
votes
1answer
146 views

Are there yellow metals besides gold and copper?

Are there yellow metals besides gold and copper? Are there metals with color different than yellow and grey?
3
votes
2answers
130 views

How many delocalised electrons in gold?

How can we determine how many delocalised electrons every atom of gold contributes to the 'sea of delocalised electrons'? More generally, how can we determine the number of electrons any metal ...
2
votes
1answer
49 views

Sacrificial Anodes and Pit Corrosion

I have a slab of aluminum and one part of the slab will be exposed to a very corrosive environment. If I put a sacrificial anode elsewhere on the slab will the section that is exposed still be ...
0
votes
0answers
40 views

Which is more ferromagnetic: grey iron or mild steel?

Which of these two metals is more ferromagnetic: grey iron or mild steel? I understand that grey iron has more graphite which is paramagnetic, and mild steel contains carbon. How does the ...
2
votes
0answers
58 views

Two 2" solid steel bearings for stress relief hand-rolling. Safe? What's that smell? How to thoroughly clean?

I bought these two 2" solid steel ball bearings for the purpose of rolling them in my hands. Just for something to do while sitting at my computer, without those silly bells inside. (They're still a ...
7
votes
1answer
103 views

Why did the salt on the skin of my turkey react with the aluminum foil it was touching?

I sprinkled salt on my turkey skin and left it to dry out over night. It was covered with aluminum foil. The next morning the aluminum foil had holes ‘burnt’ in it and the turkey skin turned silver at ...
1
vote
0answers
40 views

How is N to C ratio measured in forming austenitic stainless steel?

Well, gardeners and "green" people will think I'm talking about compost! Nitrogen is the future hope of stainless steel industry; since in the production of austenitic steel it can even completely ...
0
votes
1answer
74 views

Simple metal-base and heating reactions

Which of the following metals will give $\ce{H2}$ on reaction with $\ce{NaOH}$? Options: (A) $\ce{Be} \quad$ (B) $\ce{Ba} \quad$ (C) $\ce{Ca} \quad$ (D) $\ce{K}$ I tried to search how bases react ...
0
votes
1answer
249 views

Does the protective layer of Aluminum oxide form on the surface of aluminium alloys (such as Al-Zr) as well?

Aluminum is an ideal element for usage in airports. Unlike Iron, when oxygenating, there is a protective layer formed that does not allow the rest of the Al metal to oxygenate.Does the protective ...
3
votes
1answer
18 views

Does metal oxidize (faster) in dirt?

I had an interesting event occur recently: I stuck a screwdriver in a potted plant, for it is the only way that I am able to unlock a certain door. It was left in there for about a month before I ...
-1
votes
1answer
80 views

Why are some metals ferromagnetic?

Why are $\ce{Fe}$ and $\ce{Ni}$ ferromagnetic? $\ce{Fe}$ has metallic bonds, which is the electrostatic attraction between the positive metal ions and delocalized electrons. Is it due to these ...