Calcium

Calcium is a chemical element with the symbol Ca and atomic number 20. It is essential for living organisms, including humans, and is the most abundant metal and the fifth-most abundant element in the Earth's crust.

Properties of Calcium

Here are some important properties of calcium:

• Atomic Number: 20
• Atomic Mass: 40.08 amu
• Physical State at Room Temperature: Solid
• Color: Silvery-gray
• Melting Point: 842°C
• Boiling Point: 1484°C

Role of Calcium in Living Organisms

Calcium plays a crucial role in various biological processes, including:

• Building and maintaining strong bones and teeth
• Regulating muscle contractions, including the heartbeat
• Transmitting nerve signals
• Assisting in blood clotting
• Supporting the function of certain enzymes

Sources of Calcium

Calcium is commonly found in various foods, including:

• Dairy products such as milk, cheese, and yogurt
• Leafy green vegetables like spinach and kale
• Fortified foods such as cereals, juices, and plant-based milk alternatives
• Nuts and seeds

Study Tips

To effectively study and understand the topic of calcium, consider the following tips:

1. Review the periodic table to understand calcium's position and its properties in relation to other elements.
2. Focus on the role of calcium in biological processes and its importance for human health.
3. Explore different sources of calcium and their significance in maintaining a balanced diet.
4. Practice identifying calcium-rich foods and their potential impact on overall health.
5. Consider conducting experiments or demonstrations to observe the properties of calcium in a laboratory setting.

[Calcium] Related Worksheets and Study Guides:

• The MoleChemistry • High School