Silicon is an element.
is silicon a mixture? Silicon is a pure substance because it is an element.
The purest sand is a compound, silicon dioxide. Most ordinary sand, however would contain some other materials and could be either a homogeneous or a heterogeneous mixture.
No, silicon is an element.
heterogeneous
Silicon is an element, not a mixture. It is a solid metalloid that is commonly found in nature in its pure form.
Solid silicon dioxide is not considered a compound or homogeneous mixture. It is considered a heterogeneous mixture because it contains traces of visible components that can be separated physically.
If there's more than just silicon in the compound, it's a compound
It is a heterogeneous mixture.
Heterogeneous
heterogeneous
It is a heterogeneous mixture.
Concrete is a heterogeneous mixture.