Because its structure is drawn by dots which can't describ its structure.
A conductor transmits heat and electrical good.
Answer: It means that the energy is being stored or preserved to be used at a later time.
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They are important because they are the electrons that help the atom to bond with another atom. They are in the outer most shell. ☺️
Answer:
This is a reversible change. Similarly, if you boil water, it evaporates and becomes water vapor. When you cool this vapor down, it turns back to water. A change which cannot happen backward, that is, it cannot be reversed is called an irreversible change.
Explanation:
