Coin Cleaning Experiment Quiz

What is the main objective of the experiment discussed in the video?

• To determine which type of Coke tastes better.

• To find out which type of Coke cleans coins more effectively.

• To see how long it takes for Coke to evaporate.

• To compare the sugar content in different types of Coke.

What is observed in the experiment when the coins are placed in the solutions?

• The coins start to melt.

• The coins become magnetic.

• The coins change color immediately.

• Bubbles form around the coins.

Why is it important to keep the experiment away from ants?

• Ants are attracted to shiny objects.

• Ants could interfere with the results.

• Ants might drink the Coke.

• Ants might get stuck in the solution.

What is the main reason the coins become shiny after the experiment?

• The phosphoric acid in the Coke reacts with copper oxide.

• The carbonation in the Coke cleans the coins.

• The sugar in the Coke polishes the coins.

• The temperature of the Coke melts the dirt off the coins.

What chemical in the Coke is responsible for cleaning the coins?

• Citric acid

• Phosphoric acid

• Sugar

• Carbon dioxide