Sodas like cola contain phosphoric acid which can dissolve the copper oxide tarnish on pennies, making them look clean and shiny. The acid breaks down the tarnish and allows the shiny copper surface to be revealed.
The coin was likely made of copper, which is an element commonly used for making coins. When heated, copper reacts with oxygen in the air to form copper oxide, which is a black compound.
To create a simple experiment with basic household items, you could fill a glass with water and place a coin in it to explore surface tension. Or, you could mix baking soda and vinegar in a bottle to observe a chemical reaction. Another idea is to create a homemade volcano using baking soda, vinegar, and a plastic bottle.
No, a coin can not float on gasoline.
There is no official "five bob coin" in Kenya's currency. The smallest coin denomination is the one-shilling coin. It's possible that a five-bob coin may exist as a novelty item or souvenir, but it is not recognized as legal tender in Kenya.
A shiny coin reflects light. The smooth surface of the coin allows light to bounce off it, resulting in a specular reflection.
Shiny? As in the coin was very shiny.
The property descibed by a nickel coin being shiny is lustre.
Yes.
Doubloons
Golden, shiny, valuable.
A proof coin has a special shiny finish on it and it is made to be sold to collectors, and not used as money.
2 to 1
you see what it is worth by seeing how shiny it is how old it is and if it is not scratched up then you bring it to a coin professional
it is coated in copper. copper prevent corrosion.
A binomial experiment is a experiment that consists of repeated trails, with two possible outcomes. An example of this would be a coin toss.Ê
because it is shiny and the dirt doesn't stick on it