SCIENCE

Method of Separation

1. Oxygen Substance

cannot be separated

Reason:

Oxygen is a pure substance or element. By the phrase itself, it is already in the pure state.

2. Water Substance

by electrolysis

Reason:

Water is composed of two independent or pure elements: hydrogen and oxygen. Only the electrolysis is the capable one to do the separation of the elements. It is due to the cathodes that electrolysis uses to isolate each.

3. Gold Substance

cannot be separated

Reason:

Gold is a pure substance or element. By the phrase itself, it is already in the pure state.

4. Carbon Dioxide Substance

could be by colling down or in electrical means

Reason:

Carbon dioxide containa carbon and oxygen elements, which can be separated.

5. Carbom

cannot be separated

Reason:

Carbom is a pure substance or element. By the phrase itself, it is already in the pure state.