Question

Guess who I am?
i) I am a cheap metal but highly reactive. Therefore, I sacrifice myself to save the objects made of iron.
ii) I am a solid solution. Dentists use me to fill cavities.
iii) I am a constituent of blood pigment. When I am less in quantity, the person is anaemic.
iv) I am formed when matrix and flux react.

Answer 1

Hint: Elements are arranged in a tabular form called periodic table and there are 115 elements present in the periodic table. There are similarities as well as differences in the properties of these elements. On the basis of these properties elements can be divided into metals and non-metals.

Complete answer:
The elements which show the properties of metal are kept in the category of metals. The main physical properties followed by metals are:
1. Metals are lustrous in nature.
2. They show malleability and ductility.
3. Sonorous in nature.
4. Good conductor of heat and electricity.
5. Generally solid at room temperature.
6. High melting and boiling point.
Number of metals are used for dental filling materials. Teeth can be filled with gold, porcelain, silver amalgam generally consists of mercury mixed with silver, tin, zinc and copper or tooth-coloured, plastic and glass materials called composite resin fillings.
But the above all conditions are followed by the metal zinc.

Note:
There are a total 92 elements out of which 70 are metals. While non-metal elements are those that do not possess the properties of metal. These are arranged on the left side of the periodic table. And there are 22 non-metals in the periodic table.