what is meant be a pure substance
Answers
Pure substances are defined as substances that are made of only one type of atom or only one type of molecule (a group of atoms bonded together). The measure of whether a substance is pure is known as purity.
Imagine a cube of sugar that you might add to a cup of hot coffee or tea. If you look at the box of sugar cubes, you might see on the label the words 'pure cane sugar.' Does the word 'pure' mean the same in all cases, and what does this word mean within the context of chemistry?
The pure substance within chemistry is a very simple concept to grasp. Pure substances are defined as substances that are made of only one type of atom or only one type of molecule (a group of atoms bonded together). The measure of whether a substance is pure is known as purity. For example, pure iron would only contain iron atoms, and, as in the sugar cube mentioned above, pure sugar would only contain molecules of the substance called sucrose.
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