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chemicals

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Issue:

Science

 

Written by:

Madge B

 

Date added:

June 26, 2017

 

Level:

University

 

Grade:

A

 

No of pages / words:

5 / 1261

 

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2558 times

 

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Essay content:

Some typical chemical substances can be diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as solid, liquid, or gas, and may change between these phases of matter with changes in temperature or pressure. Defining Chemical substances (also sometimes referred to as a pure substances) are often defined as any material with a definite chemical composition in most introductory general chemistry textbooks...
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However, there are exceptions to this definition, a pure substance can also be defined as a form of matter that has both definite composition and distinct properties.[4] and the chemical substance index published by CAS also includes several alloys of uncertain composition.[5] Elements Main article: Chemical element An element is a chemical substance that is made up of a particular kind of atoms and hence cannot be broken down or transformed by a chemical reaction into a different element, though it can be transmutated into another element through a nuclear reaction...
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