Calcium carbonate is a pure chemical compound with the chemical formula CaCO3, making it a homogeneous substance. Homogeneous mixtures have uniform composition throughout, with the same properties and proportions of components in any given sample. In contrast, heterogeneous mixtures consist of visibly different substances that are not uniformly distributed. Calcium carbonate is commonly found in nature as limestone, marble, and chalk, but in its pure form, it is considered a homogeneous substance.
Chalk is a heterogeneous substance because it is composed of various materials such as calcium carbonate, quartz, clay, and other minerals. These materials are not uniformly distributed throughout the chalk, resulting in a non-uniform composition.
Calcium itself is an element and is a pure substance, so it is a homogeneous material. It is not a mixture at all.
Calcium bromide, CaBr2, is a compound. It is not an element, because elements are individual species and they are found in the periodic table. It is not a homogeneous or heterogeneous mixture, because it is a single entity.
Calcium chloride is an ionic compound, in which calcium and chlorine are chemically combined, forming a pure substance, and as such is homogeneous, but not like a homogeneous mixture. A homogeneous mixture is made of components that are notchemically combined.
Playdough is homogeneous because it is a mixture with uniform properties throughout.
Chalk is a heterogeneous substance because it is composed of various materials such as calcium carbonate, quartz, clay, and other minerals. These materials are not uniformly distributed throughout the chalk, resulting in a non-uniform composition.
Calcium itself is an element and is a pure substance, so it is a homogeneous material. It is not a mixture at all.
It's an element. Check your periodic table.
hetergeneous
Heterogenous
heterogeneous
Heterogeneous
If it's got pulp in it, it would be heterogeneous -- otherwise, it is homogeneous.
Heterogeneous mixture.
This mixture is not homogeneous.
No, It is heterogeneous mixture.
Silver is not a homogeneous mixture or a heterogeneous mixture, it is a pure element. Silver does appear in homogeneous mixtures and heterogeneous mixtures such as sterling silver and silver nitrate.