Cobalt Properties and Reactions

The video explores cobalt, element 27, highlighting its properties, uses, and significance. Cobalt is used in magnets, batteries, and glass coloring, known for its blue hue. It acts as a catalyst in industrial processes, converting syngas to liquid fuels. Cobalt's chemistry is demonstrated through experiments with cobalt chloride, showcasing color changes and reactions. Despite its toxicity, cobalt is vital in biology, forming part of vitamin B12. The video concludes with a demonstration setup.

What is the atomic number of cobalt?

• 28

• 27

• 29

• 26

Which color is cobalt most associated with?

• Blue

• Yellow

• Green

• Red

What is a key property of cobalt that makes it useful in alloys?

• It is transparent

• It is highly reactive

• It is lightweight

• It is dense and heavy

What happens to cobalt chloride when it is heated to a high temperature?

• It turns into a liquid

• It becomes a purplish powder

• It remains unchanged

• It evaporates

In the experiment with hydrochloric acid, what color does the cobalt chloride solution turn?

• Yellow

• Bright blue

• Green

• Pink

What is the role of cobalt in the industrial process involving syngas?

• It acts as a fuel

• It is a solvent

• It is a catalyst

• It is a byproduct

Which vitamin contains cobalt as an essential component?

• Vitamin A

• Vitamin B12

• Vitamin D

• Vitamin C

Who was the British chemist that determined the structure of vitamin B12?

• Dorothy Hodgkin

• Marie Curie

• Rosalind Franklin

• Ada Lovelace

What is a potential hazard of handling cobalt in powdered form?

• It is radioactive

• It is explosive

• It is very toxic

• It is highly flammable

What is the purpose of Neil's new device mentioned at the end of the video?

• To measure cobalt density

• To store cobalt safely

• To raise cesium on a string

• To polish cobalt