Stainless steel is an alloy. It typically contains iron, carbon, nickel and chromium. Alloys are usually defined as mixtures. It's a very interesting example though. In some ways alloys are like compounds in that they exhibit properties which are unlike those of their constituents. A good steel alloy will be homogeneous.
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.
Sodium metal is an element, not a compound. It is a pure substance made up of only sodium atoms arranged in a lattice structure, making it a homogeneous material.
Arsenic is a chemical element with the symbol As, atomic number 33.
heterogeneous
compound and element
compound
It is an element.
it is a heterogeneous
Concrete is a heterogeneous mixture.
heterogeneous
Homogeneous mixture
Vinegar is a homogeneous mixture.
heterogeneous
This is a heterogeneous mixture.
Cheerios is a heterogeneous mixture.