The vinegar and salt in the ketchup will remove most of the dark tarnish on a darkened or dirty copper penny (you can accomplish the same effect more quickly using just a small dish of vinegar and salt). However, the penny will "clean up" with a slightly beige-pink or rosy color, significantly not quite the color of a shiny new penny.
The Ketchup has vinegar that cleans the copper surface off the penny to clean the penny and make it shiny and bright.
The acid can eat away the copper oxide that has formed on a penny. When the dirty crust dissolves, it can expose the shiny copper surface of the penny
KETCHUP MAKES THEM CLEANER AND SHINNIER
i think that ketchup,lemon juice,vinigar,tomato juice is the best
Because ketchup has acid.
She makes a full recovery, thanks to the efforts of Baby's father.
the salt will dissolve in the vinegar and the penny will get really clean well if it dirty
cuz the soda is dark and that's how the penny gets dirty thank you
oxygen
no it does not it cleans the penny a bit.
i think the tarnish will come of the tarnish penny
you should clean a penny wit Lemon Juice.
Quite well, if you apply a little elbow grease. Another good penny cleaner is ketchup.
the acidity breaks into the dirty molecules and cleans it off
Penny