yes matter can be both pure substances and mixtures
As heat is not matter, it is neither.
pure substance?
No, it is a mixture; rarely a drug is a pure substance.
Ca is an element. It is a pure substance, which, by definition, is homogeneous matter, but is not a mixture.
No a mixture is by definition not a pure substance.
pure substance
It is a mixture of substances
No, sweetened water is not a pure substance because it is a mixture of water and sugar or other sweeteners. A pure substance is a single type of matter with a specific composition and properties.
rice pudding a pure substance or a mixture and is it a homogenous or heterogenous
pure substance, propanone
pure substance
pure substance