Less is more!
In Teaching Chemistry, All You Need is One Drop!

Muhamad Hugerat

E-mail: muha4macam.ac.il

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ABSTRACT

"Microscaling" means reducing the mass of chemicals and the volume of the apparatus to an extent that does not compromise the results. At school level, "microscale" comprises the volume range between 5 milliliters and 5 microliters (~ 1 drop from a syringe with smallest blunted needle). In this article, we present some experiments such as electrolysis, redox reaction, and acid-base neutralization, using very small amounts of chemicals.

Body of the text

• 1. Testing of water samples using the battery and the LED:
• 2. Electrolysis of one drop.
• 3. One drop NH3 (aq) and One drop HCl (aq)
• 4. One drop of HNO3 (aq) on Cu (s)
• 5. Acid-base neutralization using one drop
• 6. Two consecutive reactions in one drop
• 7. One drop of NaOH to produce H2
• Conclusion:
• Acknowledgment
• References

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CEJ Vol. 9, No. 2, Contents