Technically, a non-pure substance is called a compound, so substance should not be used as an official scientific term. If you do come across the term 'substance', use context to decide. e.g. "Scientists isolated the substance boron." would be a pure substance, as boron is a single element.
no a pure substaince is just one thing there is no mixture. A substaince has a mixture of things.
A pure substance is a homogeneous material consisting of a single type of particles and definite set of properties.
If it is pure iron then it is considered to be a homogeneous mixture. Homogeneous is when a substance is the same thing throughout.
when a pure substance undergoes a chemical change it is no longer that same substance. A chemical change changes the identity of the substance. Hope i helped
A pure substance is a substance that consists solely of the same atoms/molecules.So a volume of water that contains only H2O is a pure substance. A block of iron that contains only Fe atoms is pure substance. A pure substance can be composed of atoms or molecules as I said before BUT they have to be exactly the same.A substance that has constant chemical composition and characteristics
it is a pure substance.... not
Methane is a pure substance.
A pure substance is the same throughout. When a substance is 100% something it is pure.
Yes, as long as a substance is 100% (purity), it is considered as a pure substance. But logically, there is no such thing as a pure substance.
There is no such thing. An element IS a pure substance.
A mixture is not a pure substance since it contains various substances. A pure substance in one that is not mixed with any other thing.
a pure substance is that which contains same atoms or same molecules..
If it is pure iron then it is considered to be a homogeneous mixture. Homogeneous is when a substance is the same thing throughout.
It's a pure substance because even though the atoms are different they still the same. If that makes sense?
a element is a pure substance
The defining characteristic of a pure chemical substance is that any sample of it contains the same elements in the same mass proportions to one another.
If all of the molecules of the substance are the same molecule
Not necessarily. The temperature of the samples would have to be the same. It can also vary with how pure the substance is.
An element.