1. Apple Cider Vinegar
and Coins
By Kelsey Sorenson

2.  Hi class! Today we are going to
experiment with apple cider vinegar and
salt and see if it is able to clean coins.
 Our question is: Does apple cider clean
pennies or silver coins (quarters, nickels
and dimes) more effectively?
 Make a hypothesis: Do you think apple
cider vinegar and salt will clean pennies or
silver coins better?
Introduction

3.  You will need…
 Apple Cider
Vinegar
 Salt
 Paper Towels
 Pennies,
Quarters, Nickels,
and Dimes
 Two bowls
 Spoon
Materials

4. Pour the apple cider
vinegar into the first
bowl.
Step 1

5. Add a dash of salt too
the bowl (not too
much, about a
teaspoon).
Step 2

6. Stir the mixture
Step 3

7. Place the pennies in
the bowl. Let sit for
about 20 seconds and
then stir them around
in the bowl.
Step 4

8. Rinse the pennies off
in the sink.
Step 5

9. They definitely look
cleaner than before!
Some of them are
super shiny. Some
still have a little dirt
on them but are
cleaner than they
were before.
What happened to the pennies?

10. What do you think is
going to happen?
Now let’s take a look at the silver
coins!

11. Repeat the same
process as the fist
time. Mix together the
vinegar and salt and
then stir.
Step 6

12. Place the quarters,
nickels, and dimes in
the mixture for about
20 seconds. Then stir.
Step 7

13. Rinse them off in the
sink.
Step 8

14. It looks like the coins
look the same as
before. Why do you
think it didn’t work as
well? Was your
hypothesis right?
What happened to the silver coins?

15. The apple cider
vinegar cleaned the
pennies better than
the quarters, nickels,
and dimes. This is
because the pennies
are made out of
copper which is a
different material
than the mixture used
to make the other
coins!
Conclusion