Iron is a versatile element known for its role in steel production, historical significance, and nutritional value. It is the most common element on Earth by mass and forms the planet's core. Historically, iron has been used since the Middle Bronze Age, leading to the Iron Age. Cast iron, an alloy with carbon, was first produced in China. Steel, another iron alloy, is widely used due to its strength and cost-effectiveness. Iron is essential for construction, tools, and vehicles. Nutritionally, iron is crucial for producing hemoglobin, with sources including meat and leafy greens.

What is the chemical symbol for iron, and what is its atomic number?

• I, 53

• In, 49

• Ir, 77

• Fe, 26

Which of the following is a characteristic of cast iron?

• High melting point

• Good fluidity and resistance to wear

• Pure iron composition

• Used primarily for jewelry

What is a common use of steel due to its properties?

• Jewelry making

• Building construction

• Food preservation

• Textile manufacturing

How can steel be made more resistant to corrosion?

• By adding copper

• By adding silicon

• By adding chromium

• By adding carbon

What is a potential health issue caused by a lack of iron in the diet?

• Osteoporosis

• Anemia

• Hypertension

• Diabetes