Explore redox chemistry with this safer alternative to the mercury beating heart demo
The traditional mercury beating heart demonstration (where electron transfer between mercury and iron causes the shape of a metal droplet to oscillate as its surface tension is affected by oxidation products) may put off teachers who are unable to acquire or responsibly dispose of mercury – but, happily, gallium can provide a safer substitute.
Delve into this intriguing application of a chemical to kinetic energy transfer and redox chemistry with your students with this video and downloadable technician notes.
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