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

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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 ...
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55 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 ...
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38 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 ...
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1answer
18 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 ...
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1answer
40 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 ...
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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 ...
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66 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: $$\ce{Al^3+ + 3e- <=> Al}$$
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1answer
54 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 ...
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1answer
38 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 ...
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1answer
43 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 ...
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612 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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33 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?
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1answer
29 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 ...
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48 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: $$\ce{Fe-Co}$$ ...
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36 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 ...
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1answer
47 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
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1answer
37 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 ...
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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 ...
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2answers
285 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 ...
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1answer
51 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, ...
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1answer
38 views

Comparing the strength of metallic bonds

Why is the boiling point of iron higher than magnesium?
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77 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 ...
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1answer
40 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 ...
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178 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 ...
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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 ...
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1answer
50 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 ...
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48 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.
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1answer
104 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?
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107 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 ...
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1answer
46 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 ...
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35 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 ...
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48 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 ...
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1answer
90 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 ...
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36 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 ...
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65 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 ...
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162 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 ...
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1answer
17 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 ...
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67 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 ...
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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 ...
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1answer
115 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 ...
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35 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?
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298 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 ...
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2answers
103 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 ...
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82 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 ...
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1answer
55 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 ...
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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 : ...
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49 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 ...
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181 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 & ...
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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?
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46 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 ...