The video tutorial discusses various elements and their applications. Noble metals are used in jewelry and watchmaking due to their tarnish resistance, and they are also used in making permanent magnets. Iodine is essential for thyroid hormone synthesis and is a key ingredient in antiseptics. Aluminum is used in manufacturing food cans, wrappers, and is a component of gems. Iron is crucial for red blood cell production and is used in alloys like steel and bronze. Tungsten is used in super alloys, power tools, and as a gold substitute in jewelry.

Which property of noble metals makes them suitable for use in permanent magnets?

• High melting point

• Malleability

• Tarnish resistance

• High conductivity

What is a consequence of iodine deficiency in the human body?

• Anemia

• Goiter

• Scurvy

• Rickets

Which element is used in the production of food cans and wrappers?

• Zinc

• Copper

• Iron

• Aluminum

What is one of the primary uses of iron in the human body?

• Bone formation

• Red blood cell production

• Nerve function

• Muscle contraction

Tungsten is a good substitute for which precious metal in jewelry?

• Palladium

• Gold

• Platinum

• Silver