A pure substance is a substance that is constant throughout. Such as water, tin or sulfur.
pure substance, propanone
An iron sand mixture is not a pure substance because it consists of multiple components, including iron particles and various impurities such as sand, minerals, and other materials. Each component retains its individual properties and can be physically separated from one another. In contrast, a pure substance contains only one type of particle or molecule, exhibiting uniform characteristics throughout. Therefore, the presence of different materials in the iron sand mixture classifies it as a heterogeneous mixture rather than a pure substance.
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Pure substance
Methane is a pure substance.
pure substance
pure substance
Pure Substance
A pure substance is classified by having a definite and constant composition. The substance can be either an element or a compound, but what makes the substance pure, is that it does not vary.
Neon is a pure substance. Elements and compounds are pure substances; mixtures are not.
CH3COOH is a pure substance. It is the chemical formula for acetic acid.
Refined substance can be a pure substance depending on the type of sugar used. If the refined sugar is white, then it is a pure substance. If it the refined sugar is brown, then it is not a pure substance.