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a pure substance is one which only contains one type of atom/molecule and an impure substance is one the has numerous types of atoms/molecules, but the impurites generally dont amount to over 50% of the substance's mass.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoElements
Pure substance:
-Contain only one kind of atom.
-Can only be made by "nuclear reactions"
-Always have the same composition.
-Have their own unique and identifying properties.
-Cannot be broken down or made into simpler substances.
Compounds
Pure substance:
-Contain two or more kinds of elements chemically joined together.
-Made by chemically reacting elements.
-Always have the same composition.
-Have their own unique and identifying properties differing from the properties of the elements which make them.
-The combined elements may be separated by chemical means.
Mechanical Mixtures
Impure substance:
-Heterogeneous
-Contain two or more substances (elements or compounds).
-Made by physically combining substances.
-The proportions of the mixed substances may vary widely.
-The properties of the mixed substance are not changed when the mixture is formed.
-Substances may be separated by physical means.
Solutions
Impure substance:
-Homogeneous
-Contain two or more substances (elements or compounds).
-Made by dissolving one or more substances into another.
-The proportions of the substances may vary within limits.
-The properties of the mixed substances are not changed as dissolving takes place.
-Substances may be separated by physical means.
Information from Chemistry (Grade 12)
Wiki User
∙ 9y agoPure substances are substances that cannot be separated by any physical or chemical processes. Impure substances are substances that have been contaminated with other materials.
Wiki User
∙ 9y agoA pure substance is one that consists only of one type of atom or molecule. An impure substance is one that is a mixture of two or more types of atoms or molecules.
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What is the definition of impure substances?
Substances that are not pure.
Difference between pure and impure substance from density?
Of course, the densities are different.
What is the difference between pure and impure?
the different between pure and impure is: 1.pure:means one kind of one thing for example:pure oxygen means only the element oxygen but in the air we have lots of elments beside the air like hydrogen ,nitrogen...etc 2.impure:the opposite from the pure :P
What are a few examples of pure and impure substances around us?
pure substance all elements and compounds like gold, hydrogen, water, methane etc. impure substance mixtures of different substances like milk, soil, sea water, minerals etc
Are a mixture pure or impure?
impure because they are made of more than 1 substance
What are the difference between pure and impure blood?
pure bllood i
What is the definition of impure substances?
Substances that are not pure.
What is the difference between substance and a pure substance?
A pure substance is one which contains only that substance and nothing else. An impure substance contains other substances in varying amounts.
Is dirt pure or impure substances?
mixture
Difference between pure and impure substance from density?
Of course, the densities are different.
What is the difference between pure and impure interpreter?
fftaysuihi7y78yndh
What is one difference between mixtures and pure substances?
A mixture contain two or more pure substances.
20 pure and impure substances around us?
gold silver
Difference between pure science and impure sciences?
The contrast is between "pure" and "applied", not between "pure" and "impure". Pure science investigates questions without regard to any practical applications that might derive from answering the questions. Applied science chooses questions to investigate based on the anticipated usefulness of answering the question. Anyone using the term "impure science" is just making a joke.
Is water a mixture or impure substance?
yes water is mixture of many impure substances and bacteria.even pure water has some bacterias.
what the between pure and impure water?
Pure water does not contain colour but impure water contains Other compounds.
How does pure substances and mixtures affect the environment?
Chemical materials (pure or impure) can be pollutants for waters, soils and air.
