Questions tagged [metal]

For questions about metals in general and their physical or chemical properties. For characteristic properties and reactions of d and f block metals specifically, use the [transition-metals] and [rare-earth-elements] tags respectively instead.

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The difference between Zn and Al on acid and base reaction

Because it was written on my textbook that Zn and Al dissolves in acid and alkali, I tried. When I put Al in NaOH solution it reacted immediately. But when I put Zn in the same concentration of NaOH ...
-2 votes
0 answers
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Question on reaction of Tin with strong base

I learned that tin reacts with HCl like below.$\ce { Sn +2HCl -> SnCl2 + H2}$But I also learned in my textbook that tin reacts with strong base when heated like this.$\ce{Sn + 2NaOH + 4H2O->Na2[...
2 votes
2 answers
88 views

Why doesn't hydrochloric acid oxidize tin to tin(IV) chloride?

Diluted hydrochloric acid oxidizes tin to $\ce{Sn^2+}$ ion: $$\ce{Sn + HCl(aq) -> SnCl2(aq) + H2(g)}$$ Why is oxidation not complete? $\ce{Sn^4+}$ has closed shell and is more stable.
0 votes
2 answers
28 views

Can metals have both Fracture Toughness and Elasticity properties?

Fracture Toughness is the resistance of a material to cracking and Elasticity is the ability to bend without breaking. I want to know if there is any metal or metal alloy that can easily bend without ...
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0 answers
36 views

What do you think is happening to aluminium in salt water with rusted copper?

I put some aluminium foil and rusted copper(namely a Japanese 10 yen coin) in saturated NaCl solution. After some minutes tiny amount of small bubbles were observed on the surface of the foil. After ...
-1 votes
1 answer
30 views

How long does it take for zinc oxide powder and heinz vinegar to fully react into zinc acetate at a 1:2 ratio of zinc:heinz vinegar? [closed]

How long should I leave a solution of zinc oxide powder and heinz vinegar in order for it to react as completely as possible? The solution is 1(zinc oxide powder):2(heinz vinegar) in a glass flask. ...
0 votes
0 answers
40 views

Separate aluminium from brass threaded bushing without affecting the brass

I wanted to separate aluminium from brass threaded bushing without affecting the brass. I also suppose that brass isn't the brass but it's a phosphor bronze. Does brass and phosphor bronze amalgamate ...
2 votes
0 answers
22 views

Can other metal salt compounds besides copper sulfate/zinc sulfate be used to create chlorophyllin? E.g. the magnesium center is replaced

There has been a lot of research done into sodium copper chlorophyllin. The synthesis is quite simple and can be done at home. It involves extracting the chlorophyll, saponifying the solution, adding ...
0 votes
2 answers
70 views

Why is aluminum a less active metal than magnesium despite having a lower first ionization energy?

I was thinking about the general trend in metal activity (reactivity increases down a group and decreases across a period) when I started thinking about aluminum and how it has a lower first ...
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0 answers
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Disposal of Metal Ion Solutions After Flame Test

I just bought a flame-test spectroscopy kit to use with our small homeschool group. It includes calcium chloride, potassium chloride, strontium chloride, and lithium chloride. I also bought a bottle ...
5 votes
3 answers
178 views

Why are there so many metals in the periodic table?

Brief Background: I was studying about the 'classical electronic configuration' of the first 20 elements of the periodic table today and was bewildered by the fact that there are an equal number of ...
0 votes
1 answer
49 views

NiCr wire and water

Suppose I'm a very impatient person and I want to heat up water by getting rid of the layer of isolation between a NiCr wire and the water (e.g. skinny-dipping). The idea is that, since the wires can ...
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0 answers
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Metal acid reactions [duplicate]

In a metal acid reaction, the products formed are salts and hydrogen. But why do the ions rearrange in neutralisation reactions? Why form salt and hydrogen? Could some explain it in detail?
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1 answer
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What drives double displacement reactions?

I have two questions: I understand that in a displacement reaction the more reactive element displace the less reactive element. But why? In the reaction with Zinc and Copper Sulfate, we form Copper ...
0 votes
1 answer
47 views

What are good ways to anticipate co-crystalization of different metal ions?

What rationale (purely theoretical/assumptive, or known by experience / backed by evidence) would you use in an attempt to effectively anticipate which other metal or elemental ions are most likely to ...
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-1 votes
1 answer
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Best material selection for a component containing hot saturated-level saline water with high chloride content (Polymer vs coated metal)

I have a component (Which can be seen as the attached file) and inside the component, there would be hot saturated-level saline water with high chloride content (Not shown) Considerations: The ...
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-4 votes
1 answer
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Increasing the weight in metal with salt? [closed]

Is it possible to increase the weight in metal (such as bronze) by exposing it, or soaking it in salt?
1 vote
1 answer
118 views

What is the mechanism of sodium reacting with water vapor?

We all know that $$\ce{2Na +2H2O(g)->2NaOH +H2}$$ The question is: What is the mechanism (not the reason that sodium is more 'electropositive' or more reactive than hydrogen, as in this question; ...
0 votes
2 answers
115 views

What metals are safe to use as electrodes when doing electrolysis of water (I am trying to produce hydrogen gas)

I am going to be a DC power converter (with fairly high voltage and amps) to turn water into hydrogen (and oxygen) gases. However I have a few questions about the safety of this process. What ...
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-1 votes
1 answer
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Balanced reaction to Cr given H+ [closed]

The troublesome nature of this post, is that I was given very little information to work with: "The metal chromium (Cr) reacts with an acid, to create Cr^+3 ions, and hydrogen gas. Show the ...
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1 vote
1 answer
137 views

Is there an acid (or other solvent) that dissolves nickel but not brass?

Preferrably one that is common or easy to make using common chemicals. My application is to remove nickel plating from brass parts. Right now the best solution I have is to scrape and chip it off, but ...
7 votes
1 answer
1k views

What theory accurately explains metallic bonding in beryllium?

Since beryllium is an alkaline earth metal, the bonds between beryllium atoms could be considered metallic and we can use molecular orbital theory (MOT) to explain metallic bonds in metals. Consider ...
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1 vote
1 answer
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How to find out by what method the steel was made, having a microstructure?

I know that rolled steel will have grains elongated in the rolling direction and I don't see anything similar in the microstructures of these steels. If I'm not mistaken, then the irregular boundaries ...
0 votes
0 answers
19 views

Will hydrogen spillover be feasible on β12 borophene

Considering the fact that atomic hydrogen spillover has only been established to take place on reducible metal oxide supports, what is the possibility of spillover from palladium nanoparticles to 2D ...
5 votes
0 answers
34 views

How to make a thin layer of crystalline barium titanate on copper substrate?

Is it possible to create a thin $\ce{BaTiO3}$ crystal layer on a copper plate by putting the plate in a beaker, pouring in heated hydrofluoric acid that has been saturated with $\ce{BaTiO3}$ powder ...
0 votes
1 answer
70 views

Can a thin stainless steel plate warping and unwarping in a gas oven due to temperature gradients break at some point?

This is in continuation of a previous question: I have a specially cut 316 stainless steel plate, 345mm diameter * 2mm thicknesses, used in a butane pizza oven that can reach 500 degrees Celsius as a ...
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-1 votes
1 answer
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Can a plain sheet of stainless steel adhering to the 316 grade be regarded as food safe at every finish level?

My question is not purely about chemistry but it definitely involves it. I was looking for a while to buy a food-grade stainless steel plate that would fit my home pizza gas oven (to have the dough ...
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2 votes
1 answer
166 views

Can metal displacement reactions happen with insoluable salts?

I know how normal metal displacement reactions work. If one metal is more reactive than the other, they will displace. For example, normally for this reaction: $$\ce{Fe_{(s)} + 2AgCl_{(aq)} -> Fe^{+...
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1 vote
1 answer
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How to find out amount of carbon in metal

I am an student of archaeology and on my final work I am working with mining hammers, on which metallography was used. But my supervisor want to use some kind of acid on the surface of the metal so it ...
1 vote
1 answer
803 views

Comprehensive list of metal alloys along with Moh's hardness scale

Material property lists, such as springermaterials.com, has lists of metal alloys and their properties. Is there a similar website that lists alloys along with their Mohs scale hardness? For ...
0 votes
1 answer
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Aluminum Alloy with most alkaline resistance [closed]

Previously i asked this question in Engineering SE: What aluminum grade is the most resistant to corrosion in alkaline environment? Some input from others seem indicating that no mass-produced ...
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0 answers
37 views

How to determine the visual properties of a specific steel compound?

The material that is described in a paper by Li et. al.[1] is interesting to me, but they don't go into any details on what the end result would look like visually. Out of curiosity, I was wondering ...
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1 vote
1 answer
93 views

How do I separate an Indium-Gallium alloy into Indium and Gallium?

I've recently learned more about Indium and Gallium, and I find them quite interesting, especially how an alloy can be manually made simply by rubbing them together. I'm curious though, is there a ...
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-1 votes
2 answers
71 views

Can you coat/ "plate" things with non metals or compounds? [closed]

I was recently watching a video on electro plating I understand that it only works with metals so I wondered if there's a method to do the same thing but with non-metals.
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3 votes
0 answers
158 views

What reaction does happen when molten sodium hydroxide reacts with aluminium?

The reaction between aqueous sodium hydroxide and aluminium follows this equation: $$\ce{2NaOH + 2H2O + 2Al = 2NaAlO2 + 3H2}$$ But it's obviously not possible to balance this equation without the ...
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2 votes
0 answers
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What happens to the sea of electrons when a metal melts/boils? [closed]

I was taught about metallic solids with the sea of electrons model. My question is how does the sea of electrons function when metal turns into a liquid and a gas. The way I see a liquid is ...
0 votes
1 answer
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Purpose of Sodium Fluoride (NaF) in Sodium Hydrogen Sulphate (NaHSO4) acid pickling solution?

I am a proud home workshop electroplating fanatic, and the kit I sourced (from another country, with five weeks shipping) contained this bag of "Dry acide salts". I'm trying to source the ...
4 votes
0 answers
25 views

The role of 2-nitrophenol in tin etchant (aqueous mixture of 2-nitrophenol and NaOH)

Aqueous mixture of 2-nitrophenol and NaOH is a time-honored etchant that dissolves tin-rich alloy and retain the intermetallic compounds from the tin. I wonder the role of 2-nitrophenol in the etching ...
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0 votes
1 answer
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Why is copper a better conductor of electricity than calcium?

How would we compare the electrical conductivity between copper and calcium? I understand that electrical conductivity of a metal is dependent on the number of delocalized electrons for that metal. ...
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11 votes
3 answers
2k views

How can steel be so different from iron, even if amount of carbon is small?

Perhaps I am too naive, but I am having a hard time visualizing how even 'high-carbon' iron and steel alloys are maybe, at most, about four percent carbon by mass, which still means only one (smaller) ...
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1 vote
1 answer
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What replaced lead-based pigments? [closed]

In the 1960s and before, even black and white letters had some lead from the actual metallic letters used by typesetters—some rubbed off. Same thing with books printed before 1970 or so and libraries ...
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1 vote
0 answers
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Natural preservatives of ink

Would pure compounds like thymol, carvacrol, and cinnamaldehyde work as preservatives of fountain pen ink? I'm specifically interested in three properties - Prevention of growth (mostly fungal) in ...
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3 votes
0 answers
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How is this Clemmensen Reduction taking place? [closed]

How did that isotopically labelled Carbon migrate? I know that an carbanion is formed, but I am not able to conclude the final product. Please Help
1 vote
0 answers
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Lithium Air vs Li Fluoride battery capacity [closed]

Lithium air aka lithium oxygen batteries are described as highest theoretical capacity battery possible. In wikipedia, it says lithium air has energy density 5210 Watt hour per kg, including weight of ...
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0 votes
0 answers
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Metal oxide formation minimum temperature?

Is there such thing as minimum temperature for creation of metal oxide? Let's say a highly reactive metal, lithium, comes into contact with solid oxygen at a cryogenic temperature of 20 Kelvin, would ...
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1 vote
2 answers
332 views

Extraction of copper from chalcopyrite

During the extraction of copper from chalcopyrite ore, the ore ($\ce{Cu2S.Fe2S3}$) is heated to form $\ce{Cu2S}$ and $\ce{FeS}$. Then during smelting it reacts with $\ce{O2}$ to form $\ce{Cu2O}$. Then ...
5 votes
4 answers
1k views

Can a metal be forced to form an anion theoretically? [duplicate]

I know that metals have the capability to lose electrons and form cations, but is it also theoretically possible to supply an electron to a metal so that it forms an anion? If so, has it ever been ...
1 vote
2 answers
110 views

Upon the addition of metallic sodium to cold water, is an explosion possible?

In a Cambridge IGCSE question paper, the following question was asked: Describe the reaction of sodium with cold water. Include the observations that can be made. I was thinking of writing that &...
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2 votes
0 answers
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Why is it that not all metals produce hydroxides when reacting with water? [duplicate]

I was taught, as a rule, that: metals + water $\rightarrow$ metal hydroxide + hydrogen gas $$\text{Na} + \text{H}_2\text{O} \rightarrow \text{NaOH} + \text{H}_2$$ However: $$3\text{Fe} + 4\text{H}...
2 votes
1 answer
197 views

Ferrous chloride solution coming out purple rather than green?

I've got some steel wool in hydrochloric acid to attempt to make ferrous chloride and the whole solution has turned purple. From everything I've seen it's supposed to be green. I have no idea what's ...
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