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A penny is an alloy because it is a mixture of different metals
A penny is not an alloy because it's not really a "mixture" of zinc and copper. Post-1983 pennies are 97.5% zinc core with the remaining 2.5% of copper layer on top. Search for "Make a brass penny" to see how one makes a penny an alloy by heating it up enough to melt and mix the metals, making the penny appear gold.
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Why does a penny hold so much water?
A penny can hold a significant amount of water due to its surface tension properties. The water molecules adhere to each other and the metal surface of the penny, preventing the water from spilling over the edges. This allows the water to collect and form a convex meniscus on top of the penny.
Is melting a physical or chemical and why?
Melting is a physical process because it does not change the chemical composition of the substance. It involves breaking the intermolecular forces holding the solid together, allowing the particles to move freely and take on the form of a liquid.
What is copper's phase of matter at room temperature?
coppers state of matter at room teperature is a solid.... so i guess think of a penny and that's basically all there is to copper. the melting point is 1083 degrees celcius at that temperature it is [[of coarse]] a liquid but it is also a red clearish liquid.Copper's physical state at room temperature is solid.
What happens to a penny if it's heated?
When a penny is heated, its atoms absorb energy and start moving more rapidly, causing the penny to expand. This expansion can be visible as the penny gets slightly larger. If heated too much, the penny can also change color due to oxidation.
What happens when you put a penny in water?
When you put a penny in water, its density is greater than that of water, so the penny sinks. This is because the weight of the water displaced by the penny is less than the weight of the penny itself.
Can a copper zinc penny change state from solid to liquid?
Yes if it is heated.
What is a real copper 1989 penny worth?
Solid copper pennies weren't made after the 60's.
What is the value of a silver 1983 penny with no state letter on it?
if the size of your penny is the same size as a copper penny and your penny is SOLID silver then a silver penny would be about 2.1 grams and today(june 25 2012) silver price is about $28.79 an ounce and there are 31.1 grams in 1 ounce making you penny worth about $1.90 but since the (kind of ) rarity it would be about $3 to somebody on ebay(+shipping) hope i helped :)
Why does a penny hold so much water?
A penny can hold a significant amount of water due to its surface tension properties. The water molecules adhere to each other and the metal surface of the penny, preventing the water from spilling over the edges. This allows the water to collect and form a convex meniscus on top of the penny.
Why doesn't a penny melt in water?
A penny is a solid material that is made out of copper and the copper is melted and poured into a mold and cooled.
How can a penny float?
A penny will not float in water, mainly because it is denser than water. When the penny is placed in water, it displaces a volume of water equal to its own volume. Since the penny weighs more than the water it displaces, it will sink.So, in order for the penny to float, you must find a liquid that is denser than solid copper -- or whatever metal or alloy a penny is made of. Mercury -- which is a liquid at room temperature -- is denser than copper. Hence, a penny will float in mercury.Possibly surface tension may allow it to float.
Is Penny hot?
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Is melting a physical or chemical and why?
Melting is a physical process because it does not change the chemical composition of the substance. It involves breaking the intermolecular forces holding the solid together, allowing the particles to move freely and take on the form of a liquid.
What is the singular possessive of penny?
The singular possessive of penny is penny's, as in "penny's worth".
1972 solid steel penny not dipped in zinc is it rare If so what is it worth?
Will it stick to a magnet? If not, it is not steel. There are no genuine 1972 steel cents. 1943 only.
A penny saved ia a penny wasted?
No, "A penny saved is a penny earned".
What is Penny's last name in the book penny from heaven?
Penny's last name from Penny from Heaven, Falucci
