Yes. Calcium oxide is a compound which is a type of pure substance.
Yes. Calcium oxide is a compound which is a type of pure substance.
No, aluminum oxide is a compound composed of a fixed ratio of aluminum and oxygen atoms, making it a pure substance. It is not a heterogeneous mixture because its components are chemically bonded in a defined structure.
Calcium is an element and therefore a pure substance.
a substance because glass needs a chemical reaction
Pure. (Its nitrous oxide.)
CaCl2 is a pure substance. It is a compound made of calcium and chlorine in a fixed ratio.
Nitrous oxide is a pure substance, as it is composed of only one type of molecule (N2O). It is not a colloid solution or a heterogeneous mixture which consist of two or more different substances.
Davy obtained the element Calcium from Lime by electrolyzing a mixture of lime (calcium oxide) and mercury oxide, which resulted in isolating pure calcium metal.
Calcium itself is an element and is a pure substance, so it is a homogeneous material. It is not a mixture at all.
Pure calcium oxide is white.
No, aluminum oxide is a compound composed of aluminum and oxygen atoms bonded together in a fixed ratio. It is a chemical compound, not a mixture.