Calcium is a metal in group IIA of the periodic table with atomic number 20, an atomic weight of 40.08, and a density of 1.55 Mg/m 3. Its melting point is 838 C, and it boils at 1440 C. The electronic ...

Calcium and other metal elements are known to enhance this blobbing process by binding to fatty acids and forming aggregates that don't dissolve in water (soap scum). These masses can become dense ...

4th Period: Potassium and Calcium—Electrons go into the fourth energy level. A small piece of sodium metal is placed in water. The sodium reacts with the water and gets very hot, producing sodium ...

Hard water is the type of water that has high mineral content (in contrast with soft water). Hard water minerals primarily ...