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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.
Liquid gold-homogeneous Solid-heterogenous
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.
No, dry ice is not a homogeneous mixture. Dry ice is actually solid carbon dioxide, which is a pure substance. It is made up of only one type of molecule and is considered a pure substance, not a mixture.
Ice is solid H2O so it is a pure substance, at least ideally.