No, they are metal with an insulation coating
No, the upper and lower water heater elements are not the same. They serve different functions in heating the water in a water heater.
There are two insulated heater elements that heat the water.
Check the heating elements in the water heater. These may be bad and need replaced.
The anode rod in a water heater helps prevent corrosion by attracting corrosive elements in the water, protecting the tank from rust and extending the life of the water heater.
75 dissolved chemical elements
If electric, the elements will blow very quickly.
A water heater is one of the essential elements of your house that when goes out suddenly, everything stops! There is no hot water, no showers, baths, or dishwashing. When you need water heater repair call Water Heater Installation Houston TX for help.
Strictly, only elements have chemical "symbols". Compounds such as water have chemical formulas, and the one for water is H2O.
There are a number of elements that can bond with water to create a chemical bond. Some elements include hydrogen, helium oxygen and nitrogen. Why can find details of the elements on Wikipedia.
The purpose of a well water anode rod is to protect the water heater from corrosion by attracting corrosive elements in the water. The anode rod sacrifices itself by corroding instead of the water heater tank, extending the life of the water heater.
Water and sodium chloride are chemical compounds not chemical elements.
Everything tangible is at least one chemical; this includes water. Water is not an element, because it can be decomposed into oxygen and hydrogen by chemical means.