Lead is an element so it is a pure substance.
No, there's usually a little antimony in it. Give up lead fishing weights; they are bad for the environment. Tungsten weights are much better.
Pure substance. Ed
Pure
A pure substance is the same throughout. When a substance is 100% something it is pure.
silicon is a pure substance because it is an element and as we know an element is a pure substance
Air is not a pure substance.
pure substance
Pure
mixture
It is a pure substance.
Its a mixture
No because it is a pure element.
Water is a compound. A pure metal is an element. Graphite (a pencil lead) is the element carbon. These are all examples of a pure substance.
pure substance, propanone
it is a pure substance.... not
Pure substance
A pure substance is the same throughout. When a substance is 100% something it is pure.
Methane is a pure substance.
Helium is pure as it is on the periodic table.