The quantity of goods bought in a market has to be equal to the quantity of goods sold.Correct
The demand curve and supply curve intersect at all the different equilibrium points.
At the equilibrium price, sellers benefit more from trade than buyers.
For a market to be in equilibrium, the number of buyers needs to be equal to the number of sellers.

Explanation
The quantity supplied and demanded, and the level of demand and supply is always subject to change. But the amount of goods sold is always equal to the amount of goods bought.