No - a pure substance can not be a mixture.
Yes, most naturally occurring substances are mixtures of different pure substances. These mixtures can be separated into their pure components using various methods like distillation or filtration. Pure substances are made up of only one type of atom or molecule and have a defined chemical composition.
A mixture is an association of one or more compounds.
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mixtures
Solubles are homogenous mixtures.
Some people divide matter into pure substances and mixtures. Pure substances are elements and compounds. Mixtures include homogeneous and heterogeneous mixtures. Some people divide matter into homogeneous matter and heterogeneous matter. Homogeneous matter includes pure substances and homogeneous mixtures (solutions). Heterogeneous matter is heterogeneous mixtures.
Matter is classified as mixtures and substances. Mixtures are made up of two or more different substances that are physically combined, such as saltwater. Substances consist of only one type of atom or molecule, like elements (e.g. gold) and compounds (e.g. water).
They are actually elements so that is pure substances. Mixtures are more than one type of element that are in the same space but not touching. Compounds are like mixtures but they are touching.
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No. Much of naturally occurring matter consists of mixtures and some of pure elements, neither of which is a compound.
Mixtures
Detergents are mixtures.
Depending up on the variable amount of different substances in the mixtures these can be different.
Mixtures are formed from substances (compounds).
mixtures
Solubles are homogenous mixtures.
Some people divide matter into pure substances and mixtures. Pure substances are elements and compounds. Mixtures include homogeneous and heterogeneous mixtures. Some people divide matter into homogeneous matter and heterogeneous matter. Homogeneous matter includes pure substances and homogeneous mixtures (solutions). Heterogeneous matter is heterogeneous mixtures.
Pure quicklime is calcium oxide, which is a compound, not a mixture. Commercially available supplies may be mixtures, as they are made from naturally occurring limestone, which may not be pure calcium carbonate. However such impure mixtures are usually pretty homogeneous.
Nearly all rock consists of mixtures of minerals.
Matter is classified as "mixtures" and "pure substances".