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

learn more… | top users | synonyms

-2
votes
1answer
32 views

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

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
17 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 ...
0
votes
2answers
63 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 ...
3
votes
0answers
31 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
35 views

Comparing the strength of metallic bonds

Why is the boiling point of iron higher than magnesium?
1
vote
1answer
41 views

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
32 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
169 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
44 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
31 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
72 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
82 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
40 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
20 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
47 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 ...
5
votes
1answer
72 views

Why did the salt on the skin of my turkey react with the tin 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 ...
0
votes
1answer
50 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
74 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
15 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
62 views

Why are some metals ferromagnetic?

Why is Iron or Nickel magnetic? Iron has metallic bonds. And a metallic bond is the electrostatic attraction between the positive metal ions and delocalized electrons. Is it because of these ...
0
votes
0answers
26 views

Copper and Hydrochloric Acid: Reaction or No Reaction? [duplicate]

In my chemistry lab, we had $18$ different reactions involving many different substances. One of the experiments involved placing a piece of copper metal in a hydrochloric acid. While observing it ...
0
votes
1answer
87 views

How to temper a non-ferrous metal

Can non-ferrous metals/alloys (copper, brass, bronze) be tempered (made harder) by temperature control alone, like ferrous metals? I understand it's simple to anneal copper, brass, etc., just by ...
0
votes
0answers
28 views

Kinetics of the conversion from metal oxide to metal hydroxide in water

How long can a metal oxide such as magnesium oxide remain in solution before being converted to the metal hydroxide?
3
votes
2answers
208 views

Making metal powders using electrolysis - chosing the right electrolyte

Really fine metal powders are good for two things: making paints and pyrotechnics. For this purposes, I can see people usually use thing called ball mill. It's basically a barell stuffed with heavy ...
2
votes
2answers
75 views

what is the chemistry behind amalgamation?

Mercury can form amalgams with metals, such as gold, however how exactly does the "reaction" if you can call it that take place? My understanding of metal bonds is that the atoms of a metal are ...
1
vote
1answer
63 views

Solution, hardener and metal required to cast key duplicates

I just watched this YouTube video for a DIY key duplication system and was trying to figure out what all the material components could be: The "mold solution" (parts 1 and 2) The "hardener" The "low ...
5
votes
1answer
51 views

Is there a systematic way to determine the expected cubic structure of metals?

I've noticed that some groups of metals with similar properties tend to belong to the same cubic structure group, such as $\text{FCC, BCC, or HCP}$. What is a good explanation as to why these metals ...
9
votes
3answers
1k views

Turn lead into gold via radioactive decay

I was looking at the isotope's table and noticed that one of Lead's isotopes can actually turn into stable gold through this mechanism : ...
2
votes
0answers
42 views

Common etchant for Stainless Steel 304L and Titanium Grade 2

I need a common etchant for S.S. and $\ce{Ti}$. Right now I'm using: $\ce{HNO3 + 3HCl}$ - for S.S. 304L $5\%~\ce{HCl} + 6\%~\ce{HNO3} + 16\%~\ce{HF} + 74\%~\ce{H2O}$ - for $\ce{Ti}$ Is it possible ...
1
vote
1answer
147 views

What are the properties of alloys?

You spend a lot of time in chemistry talking about molecular amd ionic compounds, but I'm interested in what you can do with metals only. What is the difference between the properties (physical & ...
0
votes
1answer
27 views

Crystal structure in function of pressure

If you were to investigate crystal structure changes as a function of pressure, which metals would you study first? Last? Why?
0
votes
1answer
38 views

Butane blowtorch condensing liquid on heating surface

I have a small Butane blowtorch, and use it to heat an Aluminium plate. The plate is thick so takes 20 seconds or so to really start heating up. As soon as I apply the heat, droplets of some liquid ...
1
vote
1answer
88 views

Which metals with high density do not react with mercury?

I would like to know the highest density material between 10-17 g/mol range that is less than mercury and does not react with mercury. Also would I like to know the highest density metal that is in ...
3
votes
3answers
127 views

Which electrodes do not corrode at all?

I had used spare pieces of metal to perform electrolysis. They all had the disadvantage that they corrode when used as anode - and some of the oxides are toxic (copper, chromium). I've found that ...
3
votes
1answer
86 views

I heard aluminium doesn't produce fumes when burnt but the opposite happened, how?

One day I took aluminium foil(sanitary brand, don't know if you've heard it) then I casually burned it over a gas lighter then it burned and gave off Grey fumes and the foil became a dull Grey ...
1
vote
1answer
50 views

Properties of powdered metals

I have seen certain metals such as Aluminium used in a situation where it is in a powdered form and "compacted" into a shape under intense pressure (in a mould), and it ends up looking mostly like ...
1
vote
1answer
49 views

Why is Technetium unstable?

Technetium is probably the most awkward element of the periodic table for me. It seems to me that Technetium is an exception, in the sense that it doesn't have any stable isotopes, despite having a ...
2
votes
1answer
155 views

Does a patina on a knife prevent rust?

Before I begin, I think it's worth mentioning that I know little about chemistry and even less about knives. My question is this, having seen many people talk about how patinas work and the best ...
8
votes
4answers
4k views

Are metallic/ionic bonds weaker than covalent bonds? I was taught the opposite. Now I'm confused

In mineralogy class, I was taught that metallic and ionic bonds are weaker than covalent bonds and that's why quartz and diamond have such a high hardness value. However, in organic chemistry class, I ...
1
vote
2answers
92 views

Elemental Silver Colour

What is the colour of elemental Ag? I have doubt whether it is black or silver in colour. In Tollens' test, we get a silvery precipitate of elemental silver - hence silver in colour. I have read ...
0
votes
0answers
14 views

which metal helps in cold rolling of stainless steel

Which metal and in what composition , help in expansion of stainless steel in cold rolling .
0
votes
2answers
73 views

Percentage of carbon in stainless steel to avoid brittleness

What is the maximum percentage of carbon allowed in stainless steel 202 so that it does not cause brittleness?
2
votes
1answer
44 views

What type of material is this and how is it corroding?

So I was thinking about corrosion and I came across this structure(see image) Do you think the inner metal/alloy that is corroding is steel? Also, what do you think the outer layer (in white) is? ...
0
votes
2answers
61 views

Does corrosion follow the law of conservation of mass?

For e.g .Due to rusting , iron becomes weak .So it should become weak only if the amount of iron is reduced. Even if we say the reduced iron is now the rust ,the amount of rust practically is very ...
1
vote
1answer
114 views

How to separate lead condensate from aluminum

A common problem in shooting sports is precipitation of lead onto aluminum suppressor baffles. (The lead presumably comes from both lead styphnate priming compound and from the base and bearing ...
0
votes
1answer
29 views

Controlling the shape of metal

Is there a way to control the shape of metal? Suppose I have a fast melting metal, is there a way to make it take a specific shape? Of course I don't mean to like put it in a template to take the ...
0
votes
3answers
92 views

A metal that melts quickly?

Is there a kind of metal that melts very quickly with very low heat or temperature and at the same time becomes hard very quickly? I'm very naive in chemistry with limited knowledge. So I hope your ...
3
votes
2answers
200 views

can an alloy be used to make another alloy?

The answer is likely very obvious but I know pretty much nothing about this so: Can I make an alloy, using an alloy? That is, could I make an alloy of steel (in itself an alloy of iron and carbon) ...
0
votes
1answer
176 views

Classifying atoms as metals or nonmetals based on the periodic table [closed]

The electron configuration of the outer shell of four atoms are: $X: 3s^23p^3, Y: 6s^26p^3, Z: 3s^23p^4 T: 6s^26p^4$. I don't know if these atoms are metal or nonmetal. Please classify the four ...