Brian :cupofcoffee: :rss: on Nostr: Today in the classroom: First year chem are making a brass alloy using pennies and ...
Today in the classroom:
First year chem are making a brass alloy using pennies and zinc. We'll chemoplate the penny with powdered zinc in NaOH. Then, we heat the zinc coated penny to create a shiny "gold" penny. This is a good lab to show students that mixtures can be solids.
Second year will explore how pH changes with H+ ion concentration. They'll dilute some samples, collect pH, then compare their molarity with the calculated pH value.
#chemistry #teaching
Published at
2026-03-24 10:43:00 UTCEvent JSON
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