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Is cleaning a penny with vinegar and salt a physical or chemical change?
Cleaning a penny with vinegar and salt is a chemical change. The vinegar (acetic acid) reacts with the salt (sodium chloride) to form a chemical compound that removes the tarnish on the copper surface of the penny. This reaction changes the composition of the penny's surface, making it appear shiny and clean.
Is salt and vinegar removing tarnish from a penny physical or a chemical change?
Removing tarnish from a penny with salt and vinegar is a chemical change. The reaction between the salt, vinegar, and tarnish on the penny results in the formation of new substances that remove the tarnish.
What happens when you put a penny in vinigar?
Vinegar contains acetic acid. The acid reacts with the outer layer of the penny, which is usually very dull because of oxidation, and removes that layer leaving a new, shiny layer from beneath.
How does a penny react when put in vinegar?
The vinegar was so strong that it clean the penny. Vinegar is acedic acid. The penny has oxidized in air and the acid removes the oxidization from the penny, making the copper shiny again.
Who invented how to clean a penny with vinegar?
The process of using vinegar to clean a penny is a common science experiment that demonstrates the chemical reaction between the acid in vinegar and the tarnish on the surface of the penny. There is no specific person who can be credited with "inventing" this method, as it is a simple and well-known technique in the realm of science education.
What solvent can clean pennies best out of water vinegar lemon juice apple juice and sprite?
vinegar is the best way to clean a penny out of the choices given.
Why garlic in vinegar turns to green?
I turned white vinegar green by putting a 1969 penny in it for two weeks in the refrigerator. It turned green because of the copper in the penny reacting with the vinegar in a process called oxidization. The green was the copper oxide formed when the copper in the penny oxidized in the vinegar.
Why can vinegar clean a dirty penny?
Vinegar contains Acetic acid that reacts with the copper in the penny.
Why does vinegar and salt clean a penny better than lemon juice?
Vinegar is a weaker acid than lemon juice, allowing it to dissolve the copper oxide layer on the penny more slowly and gently. The addition of salt in the vinegar solution helps to increase conductivity and enhance the cleaning effect by creating an electrolyte solution that speeds up the chemical reaction between the vinegar and the copper oxide on the penny.
Can a penny be cleaned with vinegar?
Yes, vinegar can be used to clean a penny. The acidic nature of vinegar can help dissolve and remove built-up grime and oxidation on the surface of the penny, restoring its shine. Simply soak the penny in vinegar for a few minutes, then gently scrub with a soft cloth or toothbrush to remove any remaining dirt.
What causes vinegar to rust a penny?
Pennies are made of zinc plated with copper. Copper reacts with oxygen and water to form copper oxide. This is the tarnish you see on pennies that have been in damp conditions. The only U.S. coins that can truly rust are the 1943 zinc coated steel cents.
How can you tarnish a penny?
One way to tarnish a penny is by exposing it to a mixture of salt and vinegar. This combination creates a chemical reaction that causes the copper surface of the penny to darken and tarnish over time.
