There is no well-known "Green-penny hypothesis" as far as I can tell.
I suppose some student every so often creates their own hypothesis about why pennies turn green, but they are certainly not well-known, or even slightly-known.
To be truly testable, a hypothesis should be falsifiable, with counter-testing and proof of the null hypothesis possible. First you have to find a problem then find a question or what you are going to test. An example would be paper towels, such as how much weight they can hold. A hypothesis would be, "Bounty will hold over two hundred pennies. A hypothesis is an educated guess.
A fact is something that is known for sure, like "My hat is green". A hypothesis is a guess like "if I melt ice with salt, it will melt faster".
A hypothesis
If the pennies were pre-1982 then 9 US pennies are very close to 1 ounce (9.145 pennies = 1 ounce). If the pennies are after 1982 then 11 US pennies are very close to one ounce (11.34 pennies = 1 ounce).
A hypothesis.
I think coca cola cleans pennies the best
"Pennies in a Pickle: Exploring the Greening Effect"
Acid in the rain reacted with the copper to turn it green. That is why there is sometimes green on pennies. Acid in the rain reacted with the copper to turn it green. That is why there is sometimes green on pennies. Acid in the rain reacted with the copper to turn it green. That is why there is sometimes green on pennies. Acid in the rain reacted with the copper to turn it green. That is why there is sometimes green on pennies.
the copper is oxidizing
You can clean copper pennies that have turned green by using a mixture of vinegar and salt or by using lemon juice and salt. Simply soak the pennies in the solution for a few hours, then gently scrub them with a soft-bristled brush or cloth to remove the green tarnish. Rinse the pennies with water and dry them thoroughly.
Pennies and the Statue of Liberty are both made of copper but the Statue of Liberty is now green just like pennies become, although they are shiny when they're new. So copper is the metal that has green tarnish.
The green world hypothesis suggests that herbivores keep plant populations in check, preventing them from dominating ecosystems. This balance allows for a diverse range of plant species to coexist.
No. I could, for example, put forward the hypothesis that mixing red paint and blue pint will give me green paint and another hypothesis that it will give me purple.
Green house effect is the hypothesis that certain gases in the high atmosphere hold heat in.
There is acid called ACETIC ACID it combines with the copper to form a copper acetate(the green coating on the pennies)!!!!!!!!!!!!!!!!!! coiol huh
The pennies turn green because they are open to the air, because they contain copper, and because copper turns green when oxidized.
A green penny can turn green when exposed to the elements, like oxygen and moisture, causing a chemical reaction with the copper in the penny. This reaction forms copper oxide, which is the green coating that gives the penny its green color.