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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.
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Is iron a homogeneous mixture?
If it is pure iron then it is considered to be a homogeneous mixture. Homogeneous is when a substance is the same thing throughout.
What happens when a pure substance undergoes a chemical changes?
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
What must someone know in order to classify it as a pure substance?
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
Is a lemon a pure substance?
it is a pure substance.... not
Is Methane a mixture or a pure substance?
Methane is a pure substance.
A pure substance is the what throughout?
A pure substance is the same throughout. When a substance is 100% something it is pure.
Is 100 percent ethanol a pure substance?
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.
What is the name of a pure substance that has two or more different elements?
There is no such thing. An element IS a pure substance.
Why isn't a mixture 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.
What is a pure stubstance?
a pure substance is that which contains same atoms or same molecules..
Is iron a homogeneous mixture?
If it is pure iron then it is considered to be a homogeneous mixture. Homogeneous is when a substance is the same thing throughout.
Is chalk a mixture or pure substance?
It's a pure substance because even though the atoms are different they still the same. If that makes sense?
What is a pure sample of atoms that are all the same known as?
a element is a pure substance
What is the characteristic of 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.
What makes a material a pure substance?
If all of the molecules of the substance are the same molecule
Is The density of a substance is the same for all samples of the substance?
Not necessarily. The temperature of the samples would have to be the same. It can also vary with how pure the substance is.
What is a pure substance that has all particles the same?
An element.
