A couple of definitions: Heterogeneous- Consisting of dissimilar elements or parts; not homogeneous Element- A substance composed of atoms having an identical number of protons in each nucleus. Elements cannot be reduced to simpler substances by normal chemical means. By it's very nature, an element cannot possibly be heterogeneous.
No. It is an element, which is homogeneous matter.
heterogeneous
Ca is an element. It is a pure substance, which, by definition, is homogeneous matter, but is not a mixture.
Heterogeneous matter has parts with different characteristics.
heterogeneous
Concrete is a heterogeneous mixture composed of cement, sand, gravel, and water. It is not an element or a compound.
Silicon is an element.
Heterogeneous
heterogeneous
It is a heterogeneous mixture.
It is a heterogeneous mixture.
Concrete is a heterogeneous mixture.