Pure Substance.
Hg stands for Mercury. A pure substance is made of only one type of atom or molecule. Since mercury is an element, it is a pure substance.
Ca is an element. It is a pure substance, which, by definition, is homogeneous matter, but is not a mixture.
CO2 is a pure substance and so is homogeneous. Hint: if it has a chemical formula then it is a pure substance.
Neither. Helium is not a mixture at all, it is a pure substance.
Maple syrup is a homogeneous mixture of water and various sugars!!!
Cider vinegar is not a pure substance it is a mixture. It contains water, acetic acid and flavouring agents. As there is only one phase present ie no gas or solids it is a homogeneous mixture.
pure substance
Homogeneous mixture
Homogeneous mixture
Pure substance; it is one form of pure carbon.
copper is an ELEMENT therefore it is not a heterogeneous OR homogeneous mixture.
no
Neither, its a pure substance
Neither, Oxygen is a pure substance not a mixture.
An aerosol may be pure or an impure material, homogeneous or not.
Liquid gold-homogeneous Solid-heterogenous
Ca is an element. It is a pure substance, which, by definition, is homogeneous matter, but is not a mixture.
Liquid gold-homogeneous Solid-heterogenous