Soak pennies for about 24 hours. Remove from the Coca-Cola and rinse with water.

Coke and off-brand colas will quickly remove the tarnish. Just don’t drink the coke afterward. Coke contains phosphoric acid that cleans the oxides. Try a variety of citrus juices to see which works best or simply let your pennies soak in lemon juice.

Theoretically, yes, it will dissolve a penny, if you left it in for YEARS, and kept replenishing the Coke with fresh Coke. PENNIES ARE MADE OF COPPER, WHICH WILL DISSOLVE IN THE PRESENCE OF ACID, ONE OF THE MAIN INGREDIENTS IN ALL SODA IS PHOSPHORIC ACID.

When copper is exposed to oxygen, it forms molecules called copper oxide that make pennies look dirty. As the penny dries and is exposed to the air, a chemical reaction occurs and the penny turns green! The green compound is called malachite.

Pennies are largely made of copper, which means they oxidize just like many other metals. However, rather than rusting, pennies simply get covered in a coating of green that can be polished off. Turning a penny green does not eat holes into the penny.

Negative charges attract positive charges, so electrons attract protons. When you put your dirty pennies in the vinegar and salt, the copper oxide and some of the copper dissolve in the water. That means some copper atoms leave the penny and start floating around in the liquid.

What You’ll Do

1. Guess which liquid will make a penny shine.
2. Set one penny aside.
3. In one cup, pour enough vinegar to cover the penny.
4. In the other cup, pour enough liquid soap to cover the penny.
5. Wait at least ten minutes.
6. Remove the pennies, rinse them in water, and rub them with a paper towel.
7. Compare all three pennies.

All pennies start out the same color—bright copper. But somewhere along the way, those pennies lose their luster. The negatively charged oxygen atoms in our air are attracted to the positively charged copper atoms in the penny. When oxygen binds with copper, they form a new molecule known as copper oxide.

According to her post, white vinegar and salt underneath one’s bed cleanses the room of bad energy. However, when you supposedly mix brown vinegar and salt it shows you the negative energy in the room.

The acetic acid in vinegar slows down the rate at which the stomach empties the food you’ve eaten into the small intestine, which in turn slows the breakdown of carbohydrates and gives the body more time to remove glucose from the blood. This ultimately reduces the spike in blood sugar you’d typically see after eating.

In fact, candy might dissolve more slowly in vinegar, since the acetic acid molecules don’t dissolve sugar as well as water does. Although your stomach does contain acid, it plays less of a role in digestion than you might think. Acids don’t break up components in your food like carbohydrates (such as sugar) or fats.

If you add a sugar cube to a cup of room-temperature water and another sugar cube to a cup of hot water, you’ll find that the sugar dissolves faster in the cup of hot water. The sugar particles move around and interact more at higher temperatures because the additional heat adds more energy to the process.

Sugar dissolves faster in hot water than it does in cold water because hot water has more energy than cold water. When water is heated, the molecules gain energy and, thus, move faster. As they move faster, they come into contact with the sugar more often, causing it to dissolve faster.

Stirring a solute into a solvent speeds up the rate of dissolving. This is because it helps distribute the particles throughout the solvent. For example, when you add sugar to iced tea and then stir the tea, the sugar will dissolve faster.