pure salt water is a solution of sodium chloride and water. why is salt water classified as a mixture? a…

pure salt water is a solution of sodium chloride and water. why is salt water classified as a mixture? a. because water contains a mix of both oxygen atoms and hydrogen atoms b. because sodium chloride molecules chemically bond with water molecules to form salt water c. because both water and salt contain small amounts of other substances that combine within the solution d. because the chemical and physical properties of sodium chloride and water stay unchanged within the solution

pure salt water is a solution of sodium chloride and water. why is salt water classified as a mixture? a. because water contains a mix of both oxygen atoms and hydrogen atoms b. because sodium chloride molecules chemically bond with water molecules to form salt water c. because both water and salt contain small amounts of other substances that combine within the solution d. because the chemical and physical properties of sodium chloride and water stay unchanged within the solution

Answer

Brief Explanations:

A mixture is a combination of substances where the individual substances retain their chemical and physical properties. In salt - water, sodium chloride and water do not chemically react to form a new substance, and their properties remain unchanged. Option A is about the composition of water itself, not why salt - water is a mixture. Option B is incorrect as there is no chemical bonding to form a new compound. Option C is not the reason for salt - water being a mixture; it's about impurities which is not the key concept here.

Answer:

D. because the chemical and physical properties of sodium chloride and water stay unchanged within the solution