The Fascinating World of Gold: Shiny, Rare, and Costly

The video tutorial explores the element gold, its properties, and its significance. Gold, with atomic number 79 and symbol Au, is a transition metal known for its malleability and ductility. Pure gold is too soft for jewelry, so it is often alloyed with other metals. Gold's high conductivity makes it valuable in electronics, though its rarity limits its use. Historically, gold has been used as currency and remains highly valued. However, gold mining poses environmental risks, including cyanide pollution, making it a hazardous endeavor.

What is the atomic number of gold?

• 81

• 80

• 79

• 78

Why is pure gold not typically used in making jewelry?

• It is too expensive.

• It is too soft and malleable.

• It is not shiny enough.

• It is too heavy.

How is the gold content in an alloy measured?

• In pounds

• In ounces

• In carats

• In grams

What percentage of the world's gold consumption is used in electronics?

• 10%

• 20%

• 5%

• 15%

What is a major environmental risk associated with gold mining?

• Deforestation

• Air pollution

• Cyanide contamination

• Noise pollution