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What else can I help you with?
Into what two broad classes can all matter be divided?
Pure substances (elements and compunds) and mixed substances (mixtures, solutions, alloys).
What can pure substances be classified as?
Pure substances are divided into elements and compounds.
Are all substances are elements?
Yes my friends. All elements are pure substances that cannot be broken down. However, pure substances aren't all elements.
Hydrogen and chlorine are pure substances of what?
Hydrogen and chlorine are chemical elements, not compounds
What is most pure basic substances?
Elements
What is the most pure basic substances?
The most pure basic substances are elements, which are made up of only one type of atom. Elements like gold, oxygen, and carbon are examples of pure basic substances. They cannot be broken down into simpler substances by chemical means.
Is aluminun a pure substance?
Yes it is, all elements are pure substances
What 2 catogories of substances include pure substances?
elements and compounds
What elements are elements that are not mixed together with another element?
They are called "pure elements."
Is potassium bromide a pure substances?
This is an ionic compound and if it is not mixed in solution or found with other substances, it is pure.
Why are elements and compounds are pure substances and homogeneous mixture are not?
Well, elements and compounds are pure substances. This is because the atoms in an elements are of one type only. Thus making it pure. But in a compound, the ratio of the masses of the combining elements or compounds are fixed. For example, the ratio for hydrogen and oxygen to combine together to form water is 1:8. Therefore the compound is also a pure substance. But homogenous mixtures are not pure substances as the components can be mixed in any ratio. We can make brine solution by mixing any amount of salt and water. There is no fixed ratio. So homogenous mixtures are not pure.
Why are elements and compounds pure substances while a homogeneous mixture is not?
Well, elements and compounds are pure substances. This is because the atoms in an elements are of one type only. Thus making it pure. But in a compound, the ratio of the masses of the combining elements or compounds are fixed. For example, the ratio for hydrogen and oxygen to combine together to form water is 1:8. Therefore the compound is also a pure substance. But homogenous mixtures are not pure substances as the components can be mixed in any ratio. We can make brine solution by mixing any amount of salt and water. There is no fixed ratio. So homogenous mixtures are not pure.
