Iron is an element, so it is a pure substance.
Iron sulfide is a pure compound. It can be as in aqueous medium too as a solution.
The way you phrase that is a little dubious because no mixture is a 'pure substance'. However, compounds like iron sulphide that are actually bonded together areconsidered pure substances. The elements of a mixture are not united by a chemical change and can (in theory) be separated.
Iron is an element. It is a pure substance that consists of only one type of atom, specifically iron atoms.
pure substance
No, iron metal is not a solution. A solution is a homogenous mixture where one substance is dissolved in another. Iron metal is a pure substance composed of iron atoms.
Mixture
Mixture
Iron is a pure substance. It's an element (Fe) and a bar of Iron is no mixture. If it was pure iron, then by definition it would be pure. However iron is rarely pure, it is usually in alloy with something.
Iron sulfide is a pure compound. It can be as in aqueous medium too as a solution.
No, Iron is a homogeneous mixture as long as the iron is pure
The way you phrase that is a little dubious because no mixture is a 'pure substance'. However, compounds like iron sulphide that are actually bonded together areconsidered pure substances. The elements of a mixture are not united by a chemical change and can (in theory) be separated.
pure substance?
Iron is an element. It is a pure substance that consists of only one type of atom, specifically iron atoms.
If it is pure iron then it is considered to be a homogeneous mixture. Homogeneous is when a substance is the same thing throughout.
pure substance
No, it is a mixture; rarely a drug is a pure substance.
No, iron metal is not a solution. A solution is a homogenous mixture where one substance is dissolved in another. Iron metal is a pure substance composed of iron atoms.