Which of the following statements about a compound is true? only the physical properties of a compound are usually the same as those of the elements from which it is formed. the physical and chemical properties of a compound are usually very different from those of the elements from which it is formed. the physical and chemical properties of a compound are usually the same as those of the elements from which it is formed.(wrong) only the chemical properties of a compound are usually the same as those of the elements from which it is formed.

The answer is second one.

In compounds, the physical and chemical properties of it is usually very different from those elements from which is formed.

One simple example is the compound Iron(II) Sulphide. It is formed from iron powder and Sulphur powder. For physical properties, iron powder is quite black and Sulphur is yellow. Also, iron powder attracts to magnets. However, in Iron(II) Sulphide, the compund is a brown solid in room temperature and pressure. Also, the solid does not attract magnets. In addition, Iron ii Sulphide gives off completely different new substance when reacting with different substances such as acid.

So, the answer is the second one.

Processes above and be sure to mention the movement of electrons and energy as the carbon atom moves from one reaction to another.