I think
it is a pure substance.... not
Methane is a pure substance.
pure substance
Gold itself is an element. All of the gold you are likely to see (rings, watches, plating, etc.) is an alloy (mixture) of gold and other metals. Even "pure gold" jewellery (24 k) is only +99.9% pure
CH3COOH is a pure substance. It is the chemical formula for acetic acid.
pure substance, propanone
To determine if a coin is not pure silver using density, you can compare the coin's measured density to the known density of pure silver (10.49 g/cm3). If the measured density of the coin is significantly different from the density of pure silver, it indicates that the coin is not made of pure silver.异The density of a substance can be calculated by dividing its mass by its volume.
Pure substance
it is a pure substance.... not
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.
Gold itself is an element. All of the gold you are likely to see (rings, watches, plating, etc.) is an alloy (mixture) of gold and other metals. Even "pure gold" jewellery (24 k) is only +99.9% pure
CH3COOH is a pure substance. It is the chemical formula for acetic acid.