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Why do the pennies form malachite on them when the salt and vinegar are not rinsed off?
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∙ 12y ago
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∙ 12y ago
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What rock did malachite?
The predominant metal in malachite is copper.Related Information:Malachite is an opaque bright blue to bright green copper carbonate hydrate, a semiprecious mineral, that contains the metal copper in combination with carbonate and hydroxide groups. Malachite often contains other metals, but only in small amounts.The chemical formula for malachite is CuCO3.Cu(OH)2.
Why does vinegar clean a penny?
Clean MoneyI read somewhere that copper pennies can be cleaned by soaking them in olive oil, but some collectors recommend not to clean coins. Another great way to clean pennies is to use a solution of vinegar and salt. Fill a cup about 1/4 of vinegar and a teaspoon of salt (more salt, faster reaction). The tarnish that forms on a penny is copper oxide. The salt and vinegar create an acid solution that causes the copper oxide to dissolve off the coins. Once they are clean they should have their original shiny coat. Remember though, if there are pits in the pennies they will show now that the oxide has been removed. If you don't have vinegar any acid such as lemon juice or Coke/Pepsi will work as well.HOWEVER ....Cleaning an ordinary modern penny is fine because there are so many of them. But you should NEVER, EVER try to clean a collectible coin because anything you have at home will damage the coin's surface and reduce or even destroy its value to another collector.If you clean pennies with just salt, it wouldn't be clean. If you cleaned them with just vinegar, it wouldn't be clean.
Is oil and vinegar an element compound heterogeneous mixture solution or colloid?
Oil and vinegar form a heterogeneous mixture.
What do you use to make a volcano progect?
vinegar form to make it erope
Malachite is a compound made up of what?
Malachite is a chemical compound. It is a carbonate, crystal mineral made from the chemical combination of copper and carbon.
What is created when a penny sits in a paper towel wrapped in vinegar?
Pennies get dull over time because the copper in the pennies slowly reacts with air to form copper oxide. Pure copper metal is bright and shiny, but the oxide is dull and greenish. When you place the pennies in the vinegar solution, the acetic acid from the vinegar dissolves the copper oxide, leaving behind shiny clean pennies.
What is the transparency of malachite?
The transparency of malachite is opaque in massive form and translucent in crystalline forms.
What does vinegar do to pennies if submerged for three days?
There is acid called ACETIC ACID it combines with the copper to form a copper acetate(the green coating on the pennies)!!!!!!!!!!!!!!!!!! coiol huh
Do pennies rust in water vinegar and bleach?
A mixture of water, vinegar, and bleach is corrosive to most metals. If pennies are placed in it, the copper will oxidize. Rusting is a term only applying to the oxidization of iron, not other metals. The pennies will look a lot cleaner and the liquid will turn blue. If you leave the pennies in the mixture too long, holes may start to form in them.
What is the plural possessive for penny?
The plural possessive form of "penny" is "pennies'".
What is the plural of penny?
The plural form for penny is pennies or pence.
What rock did malachite?
The predominant metal in malachite is copper.Related Information:Malachite is an opaque bright blue to bright green copper carbonate hydrate, a semiprecious mineral, that contains the metal copper in combination with carbonate and hydroxide groups. Malachite often contains other metals, but only in small amounts.The chemical formula for malachite is CuCO3.Cu(OH)2.
What form is copper most commonly found in?
It is most often found in the carbonate mineral malachite.
What is a plural noun for penny?
The plural form for the noun penny is pennies.
What removes tarnish on pennies?
darker soft drink will remove the tarnish form the pennies
What chemicals found in vinegar and salt clean coins?
Dirty coins like copper pennies lose their bright original shine because with time, the copper metal on the surface of the penny reacts with the oxygen in the air to form a dull brown copper oxide tarnish. Placing them in a vinegar salt (table salt or sodium chloride) solution is a way to restore the shine on dull pennies. The acetic acid in vinegar dissolves the copper oxide layer on the surface of the coin thus exposing the bright copper metal underneath. The reaction occurs much quicker if you add a little salt to the vinegar
What chemicals form when malachite heated?
The formula for Malachite is Cu 2 CO 3(OH) 2.
