Aluminum

Aluminum is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, lightweight metal that is the third most abundant element in the Earth's crust, after oxygen and silicon. It is commonly used in a wide range of applications, from household items such as foil and cans to industrial uses in construction, transportation, and aerospace.

Physical Properties of Aluminum

• Atomic number: 13
• Atomic mass: 26.9815
• Melting point: 660.3°C
• Boiling point: 2519°C
• Density: 2.70 g/cm³

Chemical Properties of Aluminum

Aluminum is a relatively reactive metal and is known for its resistance to corrosion due to the formation of a thin oxide layer on its surface when exposed to air. It reacts with both acids and bases, and is known for its ability to form strong alloys with other metals.

Biological Importance of Aluminum

While aluminum is not considered essential for biological systems, it is found in small amounts in some plants and animals. However, excessive exposure to aluminum can be toxic to living organisms, particularly in the case of humans where it has been linked to neurological disorders and other health issues.

Study Guide Questions

1. What is the atomic number of aluminum?
2. What is the melting point of aluminum?
3. How does aluminum resist corrosion?
4. What are some common uses of aluminum in industry?
5. What are the potential health risks associated with aluminum exposure?

[Aluminum] Related Worksheets and Study Guides:

• Earth's CrustEarth Science • High School