which sample of matter is a mixture (1)H2O(s) (2)H2O(l) (3) NaCl(l) (4)NaCL(aq)
please explain the answe !
NaCL(aq)
the components/elements of a mixture can be physically separated
http://www.elmhurst.edu/~chm/vchembook/106Amixture.html
To determine which sample of matter is a mixture, we need to understand the definitions of the terms involved. A mixture refers to a combination of two or more substances that can be physically separated from one another.
Now let's look at each option:
1) H2O(s) represents water in a solid state. In this case, it refers to ice. Ice is typically considered a pure substance, not a mixture, as it consists of only water molecules arranged in a specific structure.
2) H2O(l) represents water in its liquid state. Pure water, without any additional substances, is considered a pure substance, not a mixture. Therefore, this option is not a mixture either.
3) NaCl(l) represents liquid sodium chloride, often referred to as molten salt. In the liquid state, sodium chloride is a pure substance, not a mixture. So, this option is not a mixture.
4) NaCl(aq) represents an aqueous solution of sodium chloride. In this case, sodium chloride is dissolved in water. Since it is a combination of two substances (sodium chloride and water) and they can be physically separated (for example, by evaporating the water), NaCl(aq) is a mixture.
Therefore, the correct answer is (4) NaCl(aq) since it is the only option that represents a mixture.