In theory an egg shell works similar to the enamel found on your teeth. Grab a can of Coke, an empty jar, and one delicate egg. Place the egg within the jar and pour the coke over the egg. Store the jar in a safe place for one day. Once twenty four hours have passed, open the jar and pour the soda into a bowl slowly, leaving the egg in the jar. Gently remove the egg from the jar and examine what the soda has done to the shell. Remember the egg represents the enamel on your teeth!
In this experiment use a 16.9 oz bottle of coke. Open the bottle and fill it to the top with bleach. Note: Label the bottle or store it in a place no one will drink it! Seriously DO NOT DRINK IT! The process is slow but again wait for twenty four hours to pass and come back to a surprise!
Grab five old pennies before the year 1982, and one current penny. Fill five glasses with the following - bleach / rubbing alcohol / vinegar / lime juice / coke. Place one penny in each glass. After one day remove each penny and see which one comes close to matching the shiny current penny. Coke is the winner!
This is a messy experiment after all is done, so if you can, grab a pot that has one handle out the door. Pour a can of Coke into the pot and turn the burner on to bring the contents to a boil. All the water will evaporate leaving only the sugar content behind. Use a spoon to collect the sugar since it will be too hot for your hand to touch. Average intact of sugar for a day is 24g - 36g depending on your gender. A can of coke has 39g!
Coke and Milk are both acidic but Coke is more so. Use a 16.9 oz bottle of coke and open the bottle to fill the bottle to the top with milk. This is also a slow process but after a day you can see the breakdown of the protein in milk, which has been curdled at the bottom of the bottle!