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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1answer
677 views

Why do some elements with high electronegativity exhibit metallic properties?

Metals typically have low electronegativity, which makes them form ions easily and prefer making metallic bonds to covalent. However, some of them seem to disprove that. Take, for example, gold, lead ...
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1answer
34 views

Aluminum powder from aluminum sulfate?

I recently did the experiment where you drop a piece of iron in an aqueous solution of copper sulfate. After a while, the piece of iron gets coated with a fluffy coating of copper that can be dried ...
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Will Polyurethane foam cause my lapel pins to corrode over a long period of time? [closed]

I have a collection of lapel pins (made in the late 80's to mid 90's) that I plan to preserve forever. My plan is to store my pins in a small 2"x 2" acrylic containers with a Polyurethane ...
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1answer
26 views

Is Cu stable as Cu(H2O)2+ for determination on MP-AES?

I have an unknown sample of mineral which I need to dissolve in nitric acid. I need to analyze $\ce{Cu}$ from it on MP-AES. Do I need to add $\pu{1ml}$ of $\ce{HCl}$ to stabilize $\ce{Cu}$, or it is ...
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1answer
34 views

What are coexistent metals?

In ACS Sustainable Chem. Eng. 2018, 6 (10), 12542–12561, I saw the term "coexistent metals", but I could not find a definition for that on the Internet. So what does it mean? Karapinar et ...
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1answer
24 views

rust caused by salt solution & stainless steel

I am not a chemist and I could really use some help for a practical case. I am fermenting vegetables (cabbage, onions, carrots, etc.). I recently switched from glass and ceramic vessels to stainless ...
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1answer
88 views

Terminology for describing nuclei participating in metallic bonds

I've read many times that in metals (for example sodium metal), what constitutes the crystal lattice is an arrange of atoms, since no electron is given or lost, they are just shared between all the ...
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4answers
816 views

Can one turn a nickel blue?

I've heard of artificial coin toning, but haven't been able to find a recipe for creating a blue (or blue-ish) nickel coin. While not a metallurgist, I work with one. She tried nitric acid, which ...
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1answer
64 views

Can a metallic bond with a sea of electrons form inside the human body? [closed]

I’m interested if atoms or ions can for a metallic bond inside the human body? I’m talking about a metallic bond as described here: https://www.britannica.com/science/metallic-bond So I’m thinking of ...
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2answers
17k views

What is the smell of 'burning' metal?

When a pass a construction site where someone is welding two pieces of metal together there is a very distinct smell that I associate with 'burning' metal, although I am not quite sure it is burning ...
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1answer
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Can I anodize an aluminum coating on steel to have better corrosion inhibition for the steel?

I am planning to coat aluminum on steel and I want to give the steel its maximum corrosion protection. Is anodizing the coating necessary?
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2answers
819 views

Identity a metal based on its properties

A metal X can be cut with a knife. When placed in water, metal X floats and melts. What is X? The options are calcium, copper, magnesium and potassium. I think it can't be potassium because it will ...
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1answer
67 views

Is it possible for already charged metal ions to form a metallic bond? [closed]

I would like to know if it is possible for already charged metal ions to become part of a metallic bond. I was thinking of a possible metallic bond formation with other already charged metal ions or a ...
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1answer
576 views

Gold Plating on Glass?

I am considering labware options to handle NaOH solutions at ~150 °C. One appealing idea would be to coat my current glassware with gold. I've read different sources mentioning the possibility without ...
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1answer
33 views

In metallic bonding, what causes a metal to lose its outer electrons and become an ion? [duplicate]

In metallic bonding, what causes a metal to lose its outer electrons and become an ion? I am trying to understand metallic bonding, atoms and ions.
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1answer
73 views

Why aren't solid pure transition metals colourful?

I understand that the compounds of transition metal are colourful because of the appropriate energy gap between different d orbitals. But why aren't they also colourful in their solid pure state? For ...
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0answers
31 views

Zinc salt with a very high relative aqueous solubility?

Zinc bromide, iodide, and chloride are highly soluble in water, both in absolute terms, and relative to other metals. I think however that there is a zinc compound with even higher relative aqueous ...
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0answers
22 views

What is the difference between stability constant, formation constant, and successive stability constant?

I want to know what about the difference of stability constant, equilibrium constant of formation (formation constant), and successive stability constant in terms of metal-ligand complex reaction. I ...
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0answers
63 views

Why is gold even golden? [duplicate]

Bulk gold has a very characteristic warm yellow shine to it, whereas almost all other metals have a grey or silvery color. Where does this come from? I have heard that this property arises from ...
4
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1answer
151 views

Does there exist a black coloured metal?

Most of the metals are just painted/coated black. Does there exist a black coloured metal, either natural or artificial, such that even when we scratch it, it will still remain black?
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1answer
45 views

What is the influence of glass type on silver mirror making?

I'm considering the reaction wherein ionic silver (from the dissolved nitrate) is reduced by glucose in the presence of NaOH and forms a metalic silver layer on glass. Reading through several topics ...
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2answers
163 views

Why is Na+ reduced instead of H+ in the electrolysis of dilute NaCl(aq) with Mercury cathode?

In a class of electrolysis, my instructor told me that Hg forms Na-Hg in the electrolysis of dilute NaCl aqueous solution. For this reason, sodium cations are reduced in the cathode instead of ...
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0answers
36 views

In Na extraction, is Ca2+ of CaCl2 reduced in addition to Na+ of NaCl in electrolysis

In Na extraction from $\ce{NaCl}$, $\ce{CaCl2}$ is added in electrolysis to lower the melting point of the mixture to about $\pu{750 ^\circ C}$. But doesn't $\ce{Ca^2+}$ cation compete with the $\ce{...
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1answer
278 views

Do we have some “rule of thumb” to estimate the miscibility of metals?

For example, for ordinary fluids, we have polar and apolar ones. The "rule of thumb" is that polar fluids mix with each other, and also apolar fluids mix with each other, but polar fluids ...
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1answer
42 views

Is it possible to manipulate some specific atoms of a liquid metal by dint of the magnetic field, electric field, etc?

Let's deem, we have a liquid metal that is multicomponent, for example, type A, B, and C. Is it possible that we single out the type A and put them in a specific shape, for example, a circle? Let me ...
23
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1answer
17k 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 ...
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3answers
4k views

How toxic chemically is plutonium (Pu), neglecting the radioactive damage?

In Rhodes' The Making of the Atomic Bomb, he says that, while Pu is not that radioactive (which is surprising -- maybe he means compared with radium and some other elements), it is very toxic. I would ...
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1answer
10k views

Why does magnesium have an exceptionally low melting point?

Why does magnesium have a lower melting point than both calcium and beryllium? It does not seem to fit into the group trend.
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19 views

Can metal matrix composites be alloyed after their creation?

I've done a little research on metal matrix composites (MMCs), purely for fun and out of interest. Different types of metal powders are combined with reinforcement materials, to produce a reinforced ...
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1answer
2k views

What noble metal is most oxidation resistant? [closed]

To clarify, by noble metals in this case I mean all platinum metals + gold, no copper, silver or rhenium. These noble metals are described as having low reactivity, but which one is least reactive or ...
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2answers
262 views

possibility of metallic ammonium

In chemistry class, we discussed how metallic bonding occurs when metals lose electrons and become cations while the lose electrons become delocalized electrons and bind the metal cations. These ...
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0answers
32 views

Will a dangerous amount of lead leach into soil from a galvanised corrugated steel raised bed? [closed]

I have searched, found similar questions but none answer my specific need. I have built a raised garden bed to grow vegetables (ironically due to a high lead content in our garden soil - planning to ...
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3answers
1k views

Reasons for solid or liquid soap

Soap is made by a saponification reaction, where a fat reacts with hydroxide ions to form a surfactant and glycerol. To make a solid soap $\ce{NaOH}$ is used, while $\ce{KOH}$ is used for liquid ...
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2answers
34 views

If acid releases proton then how can a proton react with another proton to form hydrogen gas? [duplicate]

As we know that acid releases proton (H+ ion) when dipped in water hydrogen has a proton and electron only . To form H+ hydrogen releases 1 electron and it becomes proton. But when Acid reacts with ...
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1answer
5k views

How to dissolve bronze at room temperature

Is there any way to dissolve about 10 kg of bronze at room temperature? If yes, which substance would be the best to use and how would the reaction look like?
3
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1answer
76 views

The dissociation of hydrogen on UO2 and PuO2 surfaces: Homolytic or heterolytic?

I have seen that $\ce{H2}$ can dissociate on a metal-oxide surface by two methods: Heterolytically, forming a proton-$\ce{O}$ bond ($\ce{OH}$ group) and a hydride-metal bond ($\ce{M-H}$) on a metal-...
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0answers
40 views

Do all metals expand on heating? [duplicate]

This question came up when I was reading about substances with negative thermal expansion. The article by Takenaka [1] gives a good list of materials displaying negative thermal expansion. I noticed ...
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2answers
99 views

Do all metal salts in aqueous solution contain metal aquo complexes?

I know that nickel nitrate in aqueous solution contains the metal aquo complex ion $\ce{[Ni(H2O)6]^2+}$. But do all metal salts in aqueous solution contain such complex ions? If not, on what factors ...
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2answers
13k views

Why does sodium react with water?

The reaction of sodium with water is quite infamous. $\ce{2Na + 2H_2O \rightarrow 2NaOH + H_2}$ But exactly why does $\ce{Na}$ displace $\ce H$ in $\ce{H_2O}$?
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2answers
89 views

Copper acetate solution turning clear

I made a solution of copper acetate using 5% Acetic acid 3%hydrogen peroxide and copper wire and copper pipe and it had produced a blue solution of copper acetate. I left it over night to continue ...
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2answers
16k views

Why is copper a better conductor than iron?

Metals are good conductors as the electrons in their outer shell are loose and can plunge out of the atom with the application of the slightest force (voltage). Silver is the best metallic conductor, ...
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1answer
40 views

What makes metals malleable and ductile? [closed]

Two well-known Physical Properties of metals is that they are malleable and dutile I was just wondering about what causes metals to be malleable and/or ductile and non-metals to be brittle? What ...
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2answers
2k views

Have we ever created artificial metals?

I really don't know anything about chemistry, but I was wondering about the following vague question: has any substance been created that does not contain any metallic elements, but is metallic? In ...
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1answer
32 views

Are inner transition metals also part of the transition group? [closed]

My book doesn't say anything about this and leaves it ambiguous. The periodic table they gave colored the inner transition metals as "transition metals". So, are inner transition metals also part of ...
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0answers
221 views

Why does tantalum and tungsten not form amalgam?

User @Poutnik has recently answered a question in which he/she quoted this statement from Wikipedia: Almost all metals can form amalgams with mercury, the notable exceptions being iron, platinum, ...
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4answers
508 views

If you placed silver metal into silver nitrate, would a reaction occur? [closed]

thinking about oxidation and reduction, what happens to the silver metal and the silver ions?
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3answers
693 views

Which is the most reactive metal: Caesium or Francium? [duplicate]

I searched on Wikipedia for reactivity series but it showed me Caesium as the most reactive metal. I know and have studied that reactivity increases as we go down the first group. Then shouldn’t it be ...
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2answers
62 views

Identifying Copper Purity At Home [closed]

Are there any ways to figure out if the copper foil and mesh I have are pure, as-close-to 100% copper as possible (and as advertised)?
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0answers
45 views

Importance of concentration of gold in gold parting

I read following lines about gold parting: Gold is not attacked by $\ce{H2SO4}$ or $\ce{HNO3}$, but copper and silver dissolve in them, when concentration of gold is less than $30\%$. If however, ...
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1answer
54 views

However what is so acidic about CaO and basic(no pun intended) about SiO2 while calculating basicity of slag?

I have seen Basicity to be calculated as $\mathrm{B} = wt\%\:\ce{CaO}/wt\%\:\ce{SiO2}$ particularly in slag bascity/acidity calcuations. Now I do not think that $\ce{CaO}$ is the most basic oxide that ...

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