Potassium metal is a pure substance. In fact, it is an element as well. The reason potassium metal is an element is that it only contains one type of atom (all atoms of potassium have the same number of protons).
Copper metal is a pure substance, not a mixture. It is an element with the chemical symbol Cu.
It should be a "pure" substance, but its really an alloy.
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.
Potassium iodide solution is a compound because it is a pure substance made up of potassium and iodine chemically bonded together in a fixed ratio.
The opposite of a pure substance is a mixture.
Potassium is a metallic element and a member of the Alkali Metal group, it has the symbol K which is derived from its old name of Kalium.
Potassium dichromate is a pure substance in solid form. When dissolved in water, it forms a solution, which is a homogeneous mixture of potassium dichromate and water molecules.
Copper metal is an element and thus a pure substance.
Copper metal is an element and thus a pure substance.
Copper metal is an element and thus a pure substance.
It is not a mixture at all. It is a pure substance, an element to be specific.
Hafnium (Hf) is a pure metal.
Silver is a chemical Element - which means silver is a pure substance.
Vinegar is not a metal. It is a mixture of water and acetic acid.
Copper metal is a pure substance, not a mixture. It is an element with the chemical symbol Cu.
This is an ionic compound and if it is not mixed in solution or found with other substances, it is pure.
Saltpeter, also known as potassium nitrate, is a pure substance. It is a compound made up of potassium, nitrogen, and oxygen in a specific ratio.