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Only by chemical analysis.
quarts is a solid it is a pure substance and it is a element
Boron is a pure substance. It is a chemical element with an atomic number of 5 and is found in nature as a solid.
pure substance?
Liquid gold-homogeneous Solid-heterogenous
No, it is a mixture; rarely a drug is a pure substance.
No a mixture is by definition not a pure substance.
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.
Liquid gold-homogeneous Solid-heterogenous
NO!!! It is NOT a mixture. Dry Ice is solid Carbon Dioxide. , where the carbond dioxide molecules arrange themselves in a regular order (lattice). Whereas in gaseous form the molecules are further apart, moving and arranged irregularly.
pure substance