Extreme Science: Penny Shine - Spokane, North Idaho News & Weather KHQ.com

Extreme Science

Extreme Science: Penny Shine

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?
  • Most Popular StoriesMost Popular StoriesMore>>

  • Fire Marshal: Fireplace sparked fatal fire at Idaho cabin

    Fire Marshal: Fireplace sparked fatal fire at Idaho cabin

    Saturday, September 23 2017 2:09 AM EDT2017-09-23 06:09:41 GMT
    Fire Marshal: Fireplace sparked fatal fire at Idaho cabinFire Marshal: Fireplace sparked fatal fire at Idaho cabin

    BOISE, Idaho (AP) - The Idaho state fire marshal says an explosion in a fireplace caused a fire that consumed a house and killed four people. Knute Sandahl said Thursday the explosion, which occurred June 30 at Tamarack Resort, was ruled accidental. Sandahl says the fireplace on the main floor of the home was converted from propane-fueled to wood-burning in 2015. During the conversion to wood, the propane line that fed the fireplace was 

    >>

    BOISE, Idaho (AP) - The Idaho state fire marshal says an explosion in a fireplace caused a fire that consumed a house and killed four people. Knute Sandahl said Thursday the explosion, which occurred June 30 at Tamarack Resort, was ruled accidental. Sandahl says the fireplace on the main floor of the home was converted from propane-fueled to wood-burning in 2015. During the conversion to wood, the propane line that fed the fireplace was 

    >>
  • Reports say Kylie Jenner is pregnant with first child

    Reports say Kylie Jenner is pregnant with first child

    Friday, September 22 2017 6:03 PM EDT2017-09-22 22:03:36 GMT

    LOS ANGELES, Calif. (AP) - Is there going to be another addition to the Jenner-Kardashian clan? Several media outlets, including TMZ and People, are reporting Friday that 20-year-old Kylie Jenner, the youngest member of the reality show family, is expecting a child with her boyfriend Travis Scott. Reps did not confirm the pregnancy, however, and did not immediately respond to The Associated Press' request for comment. (Copyright 2017 The Associated Press

    >>

    LOS ANGELES, Calif. (AP) - Is there going to be another addition to the Jenner-Kardashian clan? Several media outlets, including TMZ and People, are reporting Friday that 20-year-old Kylie Jenner, the youngest member of the reality show family, is expecting a child with her boyfriend Travis Scott. Reps did not confirm the pregnancy, however, and did not immediately respond to The Associated Press' request for comment. (Copyright 2017 The Associated Press

    >>
  • Ghost tours will continue at closed Colfax hospital

    Ghost tours will continue at closed Colfax hospital

    Friday, September 22 2017 5:19 PM EDT2017-09-22 21:19:47 GMT

    COLFAX, Wash. (AP) - It looks like the tours and ghost hunts will continue at the haunted hospital in the town of Colfax. A structural engineer from Spokane has told the city's Downtown Association that the building is structurally sound, opening the door for one more year of tours at St. Ignatius Hospital. The Lewiston Tribune reports the tours raised more than $30,000 from 2015-16 for the Colfax Chamber of Commerce and Downtown Association. 

    >>

    COLFAX, Wash. (AP) - It looks like the tours and ghost hunts will continue at the haunted hospital in the town of Colfax. A structural engineer from Spokane has told the city's Downtown Association that the building is structurally sound, opening the door for one more year of tours at St. Ignatius Hospital. The Lewiston Tribune reports the tours raised more than $30,000 from 2015-16 for the Colfax Chamber of Commerce and Downtown Association. 

    >>
HD DOPPLER 6i
/
  • Top Stories from KHQHomeMore>>

  • South Hill man gives deputy ride to chase down suspect on the run

    South Hill man gives deputy ride to chase down suspect on the run

    Saturday, September 23 2017 2:10 AM EDT2017-09-23 06:10:59 GMT

    SPOKANE, Wash. - Spokane County Sheriff's Deputies are calling a 79-year-old man a hero for stepping in to help a deputy when he suddenly needed it.   That deputy tried stopping a driver on the South Hill after noticing the car didn't have license plates.     It started a chase that ended with the help from a very unlikely place. For Paul Eminger, it was a case of being in the right place at the right time. Seeing a Sheriff's Deputy running after 

    >>

    SPOKANE, Wash. - Spokane County Sheriff's Deputies are calling a 79-year-old man a hero for stepping in to help a deputy when he suddenly needed it.   That deputy tried stopping a driver on the South Hill after noticing the car didn't have license plates.     It started a chase that ended with the help from a very unlikely place. For Paul Eminger, it was a case of being in the right place at the right time. Seeing a Sheriff's Deputy running after 

    >>
  • Fire Marshal: Fireplace sparked fatal fire at Idaho cabin

    Fire Marshal: Fireplace sparked fatal fire at Idaho cabin

    Saturday, September 23 2017 2:09 AM EDT2017-09-23 06:09:41 GMT
    Fire Marshal: Fireplace sparked fatal fire at Idaho cabinFire Marshal: Fireplace sparked fatal fire at Idaho cabin

    BOISE, Idaho (AP) - The Idaho state fire marshal says an explosion in a fireplace caused a fire that consumed a house and killed four people. Knute Sandahl said Thursday the explosion, which occurred June 30 at Tamarack Resort, was ruled accidental. Sandahl says the fireplace on the main floor of the home was converted from propane-fueled to wood-burning in 2015. During the conversion to wood, the propane line that fed the fireplace was 

    >>

    BOISE, Idaho (AP) - The Idaho state fire marshal says an explosion in a fireplace caused a fire that consumed a house and killed four people. Knute Sandahl said Thursday the explosion, which occurred June 30 at Tamarack Resort, was ruled accidental. Sandahl says the fireplace on the main floor of the home was converted from propane-fueled to wood-burning in 2015. During the conversion to wood, the propane line that fed the fireplace was 

    >>
  • Local man creates system to keep guns safe from kids

    Local man creates system to keep guns safe from kids

    Friday, September 22 2017 9:59 PM EDT2017-09-23 01:59:50 GMT

    SPOKANE VALLEY, Wash. - "My name is Dylan Ervin, I'm a competitive shooter, a business owner, a husband and a father of two," Dylan Ervin said in a promotional video. He's re-inventing the way we lock up our guns. Ervin has been hard at work for the last four years creating the StopBox. "It's for the in-between point for when your firearm isn't in your holster or in your gun safe," Ervin said. The StopBox acts as a barrier, similar to a tumbler 

    >>

    SPOKANE VALLEY, Wash. - "My name is Dylan Ervin, I'm a competitive shooter, a business owner, a husband and a father of two," Dylan Ervin said in a promotional video. He's re-inventing the way we lock up our guns. Ervin has been hard at work for the last four years creating the StopBox. "It's for the in-between point for when your firearm isn't in your holster or in your gun safe," Ervin said. The StopBox acts as a barrier, similar to a tumbler 

    >>