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elements and compounds

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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


What are the 2 categories of substance?

The 2 categories are 'pure substances' or 'mixtures'


What are the 2 kinds of homogeneous matter?

The two kinds of homogeneous matter are solutions and pure substances. Solutions are a mixture of two or more substances that are evenly distributed at a molecular level, while pure substances are composed of only one type of element or compound.


Union of 2 pure substances to make a third?

chemical


What 2 catigories can matter be divided into?

Matter can be divided into two categories: pure substances and mixtures. Pure substances are made up of only one type of atom or molecule, while mixtures are composed of two or more different substances that are physically combined.


Why is a mixture not a pure substance?

Because it contains 2 or more substances


Why the separation of substances is necessary?

it is important to separate and purify substances so that: 1.we can get them in their pure form. 2.to remove undesirable particles from them.


What are 2 pure substances?

A pure substance is a homogeneous chemical substance which means its composition is constant and its properties are consistent too. Some examples of this kind of substances are water, baking soda and sucrose.


How is a mixture similar from a pure substance?

They are both compounds; They both have more than 2 atoms or substances


Is salt water a pure substance?

no because it has at least 5 substances 2 r in the name


Is copper oxide a pure substance?

No, its a compound which is 2 or more elements combined. Copper oxide is copper + oxygen which are 2 separate substances.


What are facts about pure substances?

cannot be separated into 2 or more substances by physical or mechanical meansis homogeneous, ie, has uniform composition throughout the whole sampleits properties are constant throughout the whole sampleits properties do not depend on how it is prepared or purifiedhas constant chemical composition