Mixture.
Solution involves a solute and solvent, usually separable by physical means.
(ex. Water & Sugar)
A pure substance, whether element or compound, consists of only one component and a defined composition.
No, a salt solution is not a pure substance. It is a mixture of salt (solute) dissolved in water (solvent). A pure substance contains only one type of element or compound with a fixed chemical composition.
Iron sulfide is a pure compound. It can be as in aqueous medium too as a solution.
No. Pure water is a compound, which is a pure substance. A saltwater solution is a mixture of water and salt, and is not a pure substance.
No, a solvent is a single substance that is used to dissolve other substances, such as solutes, to form a solution. It is not a mixture but rather a pure substance.
Oxygen is a pure substance because it is made up of only one type of atom - oxygen atoms. It is not a solution, which is a homogenous mixture of two or more substances.
Mixture
A solution.
Pure sugar is a compound, which is a pure substance. If you dissolve sugar in water, you will have a homogeneous mixture, which is a solution.
is aluminum can a substance or solution or mechanical
is aluminum can a substance or solution or mechanical
No, a salt solution is not a pure substance. It is a mixture of salt (solute) dissolved in water (solvent). A pure substance contains only one type of element or compound with a fixed chemical composition.
Water is a physical object and is therefore a substance. Pure water, however, is not a solution or a mixture. Water with dissolved solutes would be a solution and mixture.
cake
a pure substance. either a compound or an element. Also, a solution, which is a homogeneous mixture, not a pure substance.
mechanical mixture
Brass is a mixture or a solution; these two terms are not mutually exclusive.
A taco is a mixture. This is because of the many ingredients it has.