A homogeneous substance is the same throughout. So, a bar of pure gold, a diamond, pure water, saline water (water with salt dissolved in it) and nitrogen gas are all homogeneous, as they consist of the same substance(s) throughout. In other words, they are regular.
So, you could say that a homogeneous substance is a puresubstance.
Some synonyms for pure substance could be chemical compound, element, or homogenous material.
Gold is a pure substance
It is not pure and it is not homogeneous.
Vodka is a homogenous mixture; it consists of water, alcohol, and a few other things.
A pure substance is a substance that has only that substance in it. One kind of molecule or atom. A homogenous mixture can have different molecules and/or atoms in it, but they have to be in the same physical state. Water mixed with honey would be a homogenous mixture, because they are both liquids. Water mixed with sand would be heterogeneous.
Helium is an element which makes it a pure substance.
No, carbon dioxide is not a mixture. It is a pure substance.
rice pudding a pure substance or a mixture and is it a homogenous or heterogenous
copper is an ELEMENT therefore it is not a heterogeneous OR homogeneous mixture.
No, carbon monoxide is a compound. So it is a pure substance.
homogeneous mixture, colloid
Iodine is an element, so a pure substance, not a mixture, (so even not homogeneous).