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Why is heat needed to cause zinc coating to diffuse into copper?
Wiki User
∙ 12y ago
Heat is needed because if you just placed copper with zinc, you'd just have a zinc coating around the copper. The composition of zinc and the composition of zinc will be separate instead of becoming one solution. The heat allows the two to bond, allowing the zinc and copper to move around, and become an alloy (a solid solution) - brass.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agowhen it is heated, the atoms start to vibrate and some of the zinc and copper "change places" and you get a solution of copper and zinc, which is the alloy brass.
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What would cause silver to turn a copper color?
if you apply to much heat to it can cause the copper to pool at the heat source. this happens because of the different melting temperature between the 2 metals. silver usually has about 7.5% copper in it.
Does s25 sterling silver cause a green ring?
No. What causes skin to turn green is when the metal is copper or mixed with copper.
What effect does chlorine have on Gunite Pools?
chlorine itself has very little effect on the plaster coating that is used in most pools, if your coating is of a color , chlorine added directly to a spot may cause some discoloration , but unlikely, the pH or alkalinity of the water is of much more concern than the chlorine when it comes to a gunite pool coating.
Is holding lemonade in a copper container safe?
no it will form acid and with its intake can cause vomiting,fever.weakness.,,,,,,,
What amount of heat is required to raise the temperature of 350 grams of copper to cause a 25C change?
69
What would cause the density of pennies to vary?
Cents have been made of different metals over the last 150 years, so they'd have both different weights and densities. 1864 - mid-1982 except for 1943 : 95% copper / 5% tin and zinc. 1943 : steel with a thin coating of zinc mid-1982 - present : zinc with a thin coating of copper
What kind of reflection does a brick wall cause?
Diffuse reflection
What is sheet metal coated with to Galvanize?
Commonly, they use zinc, copper, chrome or nickel for that.
What is the cause of coating chromium on a water tap?
Heat
Why does copper change color when heated?
When copper is heated a colored coating is formed. This coating is called "scale", and consists of a thin layer of copper oxide on the surface of the copper. Depending on the thickness of the layer and its temperature, the scale can be some very interesting colors, such as red, blue, brown, and pink, and at higher temperatures, black. The effect is quite noticeable on soldering irons with copper tips.
Does the copper T cause weight gain?
The copper IUD does not have systemic effects and does not cause weight gain.
What is the value of a 2000 gold penny?
One cent. The US doesn't make gold pennies. Your coin has either been plated for use in jewelry, or the copper coating has reacted a bit with the zinc core. The latter can cause a goldish tint
Nickel is often used in electric wiring because of its superior ability to conduct electricity and its relatively low cost?
false I agree copper can oxidize and cause problems nickel is applied to limit oxidation and usually is a coating not as solid wire.
How do you store copper?
Copper can be stored in bottles containing water, such that none of the copper is exposed to air, as this can cause the corrosion of copper.
Metals that can cause blue green stains?
copper and alloys of copper
Could copper also cause zinc ions to precipitate?
No. Ions do not precipitate on their own. Since zinc is more reactive that copper it will replace copper. So placing zinc in a solution of a copper salt will cause elemental copper to precipitate.
What is diffuse cerebr?
Diffuse cerebral hypoxia (DCH) is limited to conditions that cause mild to moderate hypoxemia, or low arterial-oxygen content due to deficient blood oxygenation.
