Turn a lemon into a clock! No batteries needed! Discover the science of batteries. Simply add your own lemon to turn this kit into an amazing lemon powered clock! Easy to do, instructions included.
What you'll get:
- Copper plate
- Zinc plate
- LCD clock
- Wire
- Instruction sheet.
Incredible Science Fun Learning Ideas:
- The copper plates act like the positive electrodes of a battery. They
are plated with a metal which is less reactive than zinc. When
the copper plates and zinc plates are inserted into the lemon,
a chemical reaction takes place. Electrons (extremely small
particles with negative charge) move from the zinc plates to
the copper plates to form a current, thus activating the
LCD watch. The lemon juice helps to conduct electricity.
You can replace the lemon with a potato, a grapefruit or
use soft drinks and see what effect this has.
Warning: choking hazard Small part. Not for children under 3 years of age.
Reg. Price: $12.99 Our Price: $11.95 |  | Reg. Price: $19.99 Our Price: $18.95 | | Reg. Price: $39.95 Our Price: $35.95 |