Lead (Pb) is a chemical element.
"compound"
"compound"
A compound.
yes is a mixure with compound
yes is a mixure with compound
yes is a mixure with compound
yes is a mixure with compound
yes is a mixure with compound
Oxygen is an element
NO. It's a compound
It's a mixure
Rocks (in general) are neither a single compound, or an element. They are a mixture of compounds.