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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Are copper sulphate crystals dead or alive?

Q. Why are copper sulphate ⇦ this on eBay or Amazon [affil links] crystals thought not to be alive?
I'm asking this question for homework.im in grade 6

Brooke W.
student - Johannesburg, Gauteng, South Africa
2007

A. Brooke, turn the question on its head - what things do living species do? They grow, reproduce and react or adapt to their environment. Does copper sulphate do any of these things? If it does, it is alive, if it doesn't it is not living. To say something is dead is to suggest it once lived and this is not always the case, so you have to be careful how you phrase things! I am sure you can now answer your own question!

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2007

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