Pencil lead is actually not lead (Pb) at all, but it is graphite. And graphite is simply carbons atoms. So, no, it is NOT a compound mixture.
Concrete is a heterogeneous mixture composed of cement, sand, gravel, and water. It is not an element or a compound.
An element is a pure substance composed of only one type of atom and is homogeneous. A compound is a pure substance composed of two or more elements chemically bonded together and is homogeneous. Both elements and compounds are homogeneous in nature.
Ammonia (NH3) is a compound, not an element. It is a homogeneous mixture when dissolved in water, but a pure sample of ammonia gas is considered a compound.
Borax is a compound composed of elements such as boron, sodium, and oxygen. It is neither an element nor a mixture.
Arsenic is a chemical element with the symbol As, atomic number 33.
Heterogeneous mixture.
heterogeneous
Heterogenous
Homogeneous mixture
Milk is a homogeneous mixture.
Homogeneous mixture
Homogeneous mixture
homogeneous mixture
It is an element.
Chocolate milk is a heterogeneous mixture.
it's a compound
Aluminum is an element.