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Getting a Reaction Experiment

Shiny Coins

Materials you will need: • Paper Towel • Lemon Juice • Plastic Cup/Bowl • Dirty/Old Copper Coins

Steps:

1.  Fill the cup/bowl with some lemon juice.
2.  Put the dirty copper coins in the juice and let them soak for a few minutes.
3.  Remove the coins from the cup/bowl and place on the paper towel..

Oxygen in the air reacts with copper, making a copper oxide coating.  This is what makes copper coins dirty.  The acid in the lemon juice reacts with the oxide and removes it from the coins – making then shiny copper coin.

Kids Science Experiments & Science Projects Categories:

Absorption	Balancing & Gravity	Bending Light	Bouncing & Reflecting Light
Curious Colors	Electricity (Charging Up)	Floating & Sinking	Heat
Magnetic Attractions	Matter	Mixing & Separating	Pressure
Reaction (Getting a)	Starting & Stopping	Surface Tension	Surprising Senses
Temperature	Science Facts	Materials & Properties	Plants & Flowers