Extreme Science: Penny Shine - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

Extreme Science

Extreme Science: Penny Shine

Posted:

Join us every Saturday morning for Extreme Science with Radical Rick. This week Rick shows us how to 'shine a penny' with science!

Here's what you need for this experiment:

  1. Several tarnished (dark) pennies
  2. Small plate
  3. Hot sauce or taco sauce
  4. Sink (to rinse pennies)
  5. Electrical tape (optional)
  6. Adult supervision

Procedure:

  1. Place your pennies on your plate.
  2. Pour some taco sauce over your pennies.
  3. Using your finger, gently rub the taco sauce into the penny. Do not lick your hands afterwards as the pennies are filthy and disgusting! Also, be careful if you have any small cuts in your fingers as the taco sauce may irritate it.
  4. Let the pennies sit for 2 – 3 minutes while you wash your hands.
  5. Rinse the pennies off and check out the difference!

What is going on?

There are actually several things that you can use to clean pennies such as lemon juice and salt, vinegar and salt or, your favorite taco sauce! If you took the ingredients of the taco sauce such as tomato paste, vinegar or salt and tried to clean the pennies separately, you wouldn't get them very clean. When salt is dissolved in the vinegar as it is in the taco sauce, the salt breaks down into sodium and chloride ions. The chloride ions will combine with the copper in the penny to remove the tarnish form its surface.

Try this:

  • Try covering half of a penny with some electrical tape prior to cleaning it with the taco sauce. Afterwards, when you remove the tape you can see how much tarnish was actually removed.
  • Try a mixture of vinegar and salt to clean some more pennies. Does this solution work any better than the taco sauce?
  • Try mixing a solution of lemon juice and salt to clean some pennies. How does this solution compare to your previous attempts?
  • Try using different brands of taco sauce. Is there any difference in how well each brand cleans the pennies?
HD DOPPLER 6i
/
  • Top Stories from KHQHomeMore>>

  • Pasco Police believe man arrested in Spokane could solve 32-year-old murder case

    Pasco Police believe man arrested in Spokane could solve 32-year-old murder case

    Friday, February 23 2018 2:02 AM EST2018-02-23 07:02:03 GMT
    Photo of victim Robert McDonald from 1986, courtesy Pasco PolicePhoto of victim Robert McDonald from 1986, courtesy Pasco Police

    PASCO, Wash. - A 32-year-old murder case is about to close with an arrest. Pasco Police Detectives have gone to Spokane to interview the suspect, a 50-year-old former Pasco resident, Theodore Milam, about the presence of his DNA at a 1986 murder scene at the Pasco Boat Basin (Schlagel Park). The homicide victim, Robert James McDonald Jr of Richland, was 40 years old on Feb. 25, 1986, when visitors to the park saw a body floating 

    More >>

    PASCO, Wash. - A 32-year-old murder case is about to close with an arrest. Pasco Police Detectives have gone to Spokane to interview the suspect, a 50-year-old former Pasco resident, Theodore Milam, about the presence of his DNA at a 1986 murder scene at the Pasco Boat Basin (Schlagel Park). The homicide victim, Robert James McDonald Jr of Richland, was 40 years old on Feb. 25, 1986, when visitors to the park saw a body floating 

    More >>
  • Mad Minute stories from Thursday, February 22nd

    Mad Minute stories from Thursday, February 22nd

    Friday, February 23 2018 2:00 AM EST2018-02-23 07:00:09 GMT

    Here are the extended versions of the KHQ Local News 11 at 11 Mad Minute stories from Thursday, February 22nd.

    More >>

    Here are the extended versions of the KHQ Local News 11 at 11 Mad Minute stories from Thursday, February 22nd.

    More >>
  • Street Crimes Unit snags car thief in Moses Lake surveillance operation

    Street Crimes Unit snags car thief in Moses Lake surveillance operation

    Friday, February 23 2018 1:33 AM EST2018-02-23 06:33:55 GMT
    Moses Lake Police DepartmentMoses Lake Police Department
    Moses Lake Police DepartmentMoses Lake Police Department

    MOSES LAKE, Wash. - While on routine patrol Thursday, a Moses Lake Police Officer located a stolen vehicle, parked and unoccupied in the Peninsula area. The stolen vehicle was located with the assistance of the automatic license plate reader mounted on the vehicle, which is capable of checking thousands of vehicles an hour to see if they are stolen. Several of the department's street crimes detectives set up surveillance on the vehicle, and waited for someone to return. 

    More >>

    MOSES LAKE, Wash. - While on routine patrol Thursday, a Moses Lake Police Officer located a stolen vehicle, parked and unoccupied in the Peninsula area. The stolen vehicle was located with the assistance of the automatic license plate reader mounted on the vehicle, which is capable of checking thousands of vehicles an hour to see if they are stolen. Several of the department's street crimes detectives set up surveillance on the vehicle, and waited for someone to return. 

    More >>