Photosynthesis and Respiration -> iron

Iron

Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal that is commonly found in the Earth's crust and plays a crucial role in various biological processes.

Physical Properties of Iron:

• Atomic Number: 26
• Atomic Mass: 55.845
• Physical State at Room Temperature: Solid
• Color: Silvery-gray
• Melting Point: 1538°C
• Boiling Point: 2862°C

Chemical Properties of Iron:

• Iron is capable of forming multiple oxidation states, with the most common being +2 and +3.
• It readily reacts with oxygen to form iron oxide, commonly known as rust.
• Iron can also form compounds with carbon, resulting in materials such as steel.

Uses of Iron:

• Iron is a key component of steel, which is widely used in construction, transportation, and manufacturing.
• It is essential for the production of various tools, machinery, and vehicles.
• Iron is also crucial for the functioning of hemoglobin in red blood cells, allowing for the transport of oxygen in the body.

Study Guide:

1. What is the atomic number of iron?
2. Describe the physical properties of iron.
3. Explain the chemical reactivity of iron.
4. How is iron used in everyday life?
5. Discuss the significance of iron in biological processes.