Pure substance can be identified as either elements or compounds. Some examples of pure substance that are elements are sulfur and tin. Pure substances that are compounds are sugar and salt.
Crime labs use chromatography to identify unknown substances by breaking the two substances down into their constitute parts, and comparing them to see if they are a match.
"Pure" was the term for feces. The Victorian pure finder was a street scavenger who collected dog feces for use in the tanneries.
because it is just wrong
Intrinsic means no dopants. (a term used in semiconductors) So it means the same as pure.
Bioremediation
A pure substance is a compound (or element) with very low concentrations of impurities. They have many names, after the use: pure, ultrapure, for spectroscopic, for chromatography, electronic grade, nuclear grade, for analysis, reagent grade, etc.
Yes, you can use your senses to observe properties of a substance. For example, you can use sight to observe its color and texture, smell to detect any odors, touch to feel its texture and temperature, and taste to determine its flavor.
They are isotopes.
Technically, a non-pure substance is called a compound, so substance should not be used as an official scientific term. If you do come across the term 'substance', use context to decide. e.g. "Scientists isolated the substance boron." would be a pure substance, as boron is a single element.
Because each compound has a specific boiling point (with some exceptions) comparing exactly determined boiling points we can identify compounds.
what does the term non-biodegradeable mean iam stuck on this for my homework
Pure speech is simply written or spoken words. It is differentiated from symbolic speech which is "speaking" through behavior. Pure speech is a legal term to define speech protected by the First Amendment. The use of the word "pure" is only to differentiate it from speech that does not use words, it has nothing to do with the content of the speech.