Mixtures & Pure Substances

• A pure substance is made of only one kind of material.


• Since distilled water has always the same characteristics throughout and doesn't separate into other substances by simple means, then it is made of one kind of material and hence it is a pure substance.

the source: fotosearch http://www.fotosearch.com/DNV194/010824_0947_0068/Distilled water is almost the only example of pure substances.

• A mixture is made of two or more than one kind of material.
the source: eating in http://www.eating-in.com/10-must-follow-tips-for-us-salad-eatersSalad is one of the examples on the mixture.

• The boiling point of pure substance is constant.



• The boiling point of a mixture is variable.

Question: Can any substance of the material be separated into two or more substances by simple means?

Basic States of Matter

Matter exists in three basic states solid, liquid, or gas.
A solid has a definite shape regardless of the container in which it is put.
A soild has a definite volume.
A liquid has no definite shape but takes the shape of the container in which it is put.
A liquid has a definite volume (at the same temp)
A gas has a definite shape nor a definite volume. It takes the shape and volume of its container.


the source: homehttps://tas-ms-8sci-bl-p6.wikispaces.com/?f=print

Question: In what ways are the three states similar or different ?