Hobbyists & Industry luminaries alike learn on every visit
(we earn from 'affiliate link' purchases)

Curated with aloha by
Ted Mooney, P.E. RET

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing 1989-2025

-----

Chemical or Physical?

For my science lab, I took calcium hydroxide(powder form) and Ammonium chloride(powder form)on the either side of a paper circle. Then folded it to enclose the compounds and rubbed the top surface vigorously with my fingers. When I opened it, a very strong odour which wasn't there before was present. There was no change in color, shape or anything. Only an odour which made my nose burn. I need to know whether or not any reaction took place. Please Help!

Farah Naz Ahmed
- Ottawa city, Ontario, Canada

You did say that this produced a strong odor that wasn't there before, didn't you? So there was obviously a reaction. Although I'm not familiar with the particular experiment, I can make an educated guess as to what the reaction was--and I think you can too.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: