Wednesday, March 21, 2012

A chemical reaction- shining pennies

A chemical reaction!
We have been engaged in a scientific experiment over the last few days. 
The children have been shining pennies by using lemon juice and salt.
The children start by choosing a dull penny.  They put it on the plate and rub the mixture of lemon juice and salt on the penny with a cotton swab.  Once shiny, they rinse it off in the water and pat dry.  They then take it and put the penny in the shiny container. 

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