Cleaning Copper: Apparatus
Cleaning Copper: Method
- Pour the vinegar into the bowl. Vinegar is a weak acid, so it may sting if it gets into your eyes or on your skin. If you or your child gets splashed wash it off immediately with cold water.
- Instruct your child to add the salt to the vinegar and stir until the salt dissolves. Discuss what is happening to the salt. (The salt is dissolving in the vinegar and a solution is being formed.)
- Ask your child to draw a picture of the pennies or write in their lab notebook a description of what they look like. Dull? Dirty?
- Have your child use the spoon to place the pennies into the bowl while counting out loud as each penny is placed into the bowl. The pennies should not be stacked on top of each other. Instruct your child to record the time in their lab notebook.
- Look at the pennies and ask your child to make observations about what is happening. After 5 minutes remove the pennies.
- Wash 4 pennies thoroughly under water, and put them on a paper towel to dry. Label the paper towel “W” for washed.
- Place the 4 unwashed pennies on a second paper towel and label this towel “NW”, for not washed. Record the time.
- After one hour, look at the pennies on the paper towels.
- Have your child record their observations in their lab notebook.
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