Gallium (beating heart) - Periodic Table of Videos

TL;DR

Observing gallium react in an oscillating manner when combined with sulphuric acid, resembling a beating heart.

Transcript

We are going to try and do an experiment today. It is called the ‘gallium beating heart’. So it is quite a cool experiment, you take some molten gallium and then you submerge it or you put it underneath a layer of sulphuric acid. The sulphuric acid reacts with the gallium to form gallium sulphate and it changes the surface tension, so it all pulls ... Read More

Key Insights

• 💓 Gallium reacts in an oscillating manner when combined with sulphuric acid, creating a beating heart effect.
• 😒 Gallium is significant in the electronics industry for its use in semiconductors.
• 💦 Mendeleev predicted the existence and properties of gallium before its discovery through his work on the periodic table.
• 🫷 Recent discoveries at Nottingham University, such as the uranium-gallium bond, push the boundaries of chemistry.
• 🤒 Gallium is used in thermometers due to its nontoxic properties compared to mercury.
• 😮 Dichromate solution can alter the surface tension of gallium, allowing it to flatten and rise in an oscillating manner.
• 👶 The excitement in discovering new compounds and bonds in chemistry is a driving force for researchers.

Questions & Answers

Q: What is the purpose of the gallium beating heart experiment?

The experiment demonstrates how gallium reacts with sulphuric acid, changing its properties and creating an oscillating effect that resembles a beating heart.

Q: Why is gallium important in the electronics industry?

Gallium is used in semiconductors, which are essential components in electronic devices due to their conductivity properties and ability to control the flow of electrical currents.

Q: How did Mendeleev predict the properties of gallium before its discovery?

Mendeleev predicted the existence and properties of gallium in the periodic table, calling it eka-aluminium, based on the pattern of elements and their properties in the table.

Q: What recent discovery has been made regarding gallium at Nottingham?

A new compound with a uranium-gallium bond has been created, marking the first time chemists have observed a bond between these two atoms, opening up new possibilities in chemistry.

Summary & Key Takeaways

• The experiment involves placing molten gallium under a layer of sulphuric acid, which changes the surface tension and creates an oscillating reaction.

• Gallium has applications in semiconductors and is used in thermometers due to its nontoxic properties.

• By adding dichromate solution, the gallium ball can be made to flatten and rise, mimicking a beating heart.