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- cannot be separated into 2 or more substances by physical or mechanical means
- is homogeneous, ie, has uniform composition throughout the whole sample
- its properties are constant throughout the whole sample
- its properties do not depend on how it is prepared or purified
- has constant chemical composition
Wiki User
∙ 11y ago
Wiki User
∙ 7y agoStandard physical properties are determined on pure substances.
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What can pure substances be classified as?
Pure substances are divided into elements and compounds.
Are allotropes pure substances?
yes they are pure
What 2 catogories of substances include pure substances?
elements and compounds
Is salt a combination of 2 pure substances?
Pure salt, NaCL, is a chemical compound made from two elements. So yes it is a combination of two pure substances
In the classification of matter what are two pure substances?
The two types of matter that are pure substances are elements and compounds.
Are elements pure substances or mixed substances?
pure are you dumb or something
What can pure substances be classified as?
Pure substances are divided into elements and compounds.
How many substances are pure substances?
Practically (exceptions exist) all known substances can be obtained in a pure fom.
What is the definition of impure substances?
Substances that are not pure.
Are allotropes pure substances?
yes they are pure
What are pure substances solutions homogeneous mixtures colloids or compounds?
Compounds and solutions are pure substances
Are most substances around us pure substances ao mixture?
There are very few pure substances around us. Most substances are mixtures, or 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.
Are compounds pure?
Yes, compounds are pure substances.
Is matchbox a pure substance?
Matchbox are not pure substances.
What is one difference between mixtures and pure substances?
A mixture contain two or more pure substances.
Does pure substances have a fixed composition?
No. The nobel gases and the rare earth metals (gold, platinum) occur as pure substances in nature because they are relatively unreactive. Most materials do not occur as pure substances (typically oxidized) and must be treated to be made pure.
