Calcium

Calcium is a chemical element with the symbol Ca and atomic number 20. It is an essential mineral that is important for the growth and maintenance of strong bones and teeth. In addition to its role in bone health, calcium also plays a crucial role in muscle function, nerve transmission, and hormone secretion.

Properties of Calcium:

• Atomic Number: 20
• Symbol: Ca
• Atomic Mass: 40.078 amu
• Physical State at Room Temperature: Solid
• Color: Silvery-gray
• Melting Point: 842°C
• Boiling Point: 1484°C

Sources of Calcium:

Calcium is commonly found in various foods, including dairy products such as milk, cheese, and yogurt. Other sources of calcium include leafy green vegetables (e.g., spinach, kale), tofu, almonds, and fortified foods (e.g., orange juice, cereals).

Importance of Calcium:

Calcium is essential for maintaining strong bones and teeth. It is also necessary for proper muscle function, including the contraction and relaxation of muscles. Additionally, calcium is involved in nerve transmission and helps regulate hormone secretion.

Calcium Deficiency:

A lack of calcium in the diet can lead to various health problems, including weak and brittle bones (osteoporosis), muscle cramps, and an increased risk of fractures. It is important to consume an adequate amount of calcium through diet or supplements to maintain overall health.

Study Guide:

1. What is the atomic number of calcium?
2. What are the sources of calcium in the diet?
3. Why is calcium important for bone health?
4. What are the consequences of calcium deficiency?
5. How can individuals ensure an adequate intake of calcium?