No. Gravel is a heterogenous mixture.
Geavel is not pure, it is an undescriptable mixture of unknown composition
a mixture. a mixture is a bunch of substances mixed together. like chicken soup. =) chicken is one substance, water is another. and lemonade. and chocolate milk. but not water. the only thing in water is...water
pure substance, propanone
Pure substance
it is a pure substance.... not
Methane is a pure substance.
Concrete is a mixture, not a pure substance. It is made up of various substances such as cement, water, aggregates (sand, gravel), and additives. Each of these components retains its own properties and can be physically separated from the others.
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.