Usage of "chemical substance"

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Matter of constant composition best characterized by the entities (molecules, formula units, atoms) it is composed of and characterized by physical properties like density.

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Termes relacionats

group or class of chemical substances

substància química

Ús de chemical substance en anglès

No definite chemical substance has as yet been isolated from the cortex. 
 The Glands Regulating Personality / A Study of the Glands of Int... 

As a rule each chemical substance has an individual crystal by which it can be distinguished. 
 Evolution: An Investigation and a Critique 

The stato wrangled over the chemical substance of. 
 The new yorker 

His specific area of interest was a chemical substance, endothelin, produced in various tissues of the body. 
 The Irish Times 

She feared the Russian authorities were stalling so that evidence of any chemical substance would be lost. 
 Radio NZ 

VX nerve agent is a banned chemical substance classified by the UN as a weapon of mass destruction. 
 The Guardian 

They allegedly punched the actor, poured a chemical substance over him and put a rope around his neck. 
 Radio NZ 

An eye doctor who treated Mr Navalny previously is concerned he may have been injured by a chemical substance. 
 Radio NZ 

Every chemical substance, every plant, every animal in its growth, teaches the unity of cause, the variety of appearance. 
 Essays — First Series 

Background: Ammonia is a ubiquitous chemical substance which is created in technical and biological processes and harmful to many different organisms. 
 Pubmed 

The thoroughly cleansed fiber is made up chiefly of the chemical substance keratin, being similar in composition to horn and feathers. 
 Textiles and Clothing 

The principle employed in the Edison electrolytic meter is that which exemplifies the power of electricity to decompose a chemical substance. 
 Edison: His Life and Inventions 

A search of his home revealed a stash of instructions on how to make explosives, and a " chemical substance". 
 The Irish Times 

The Laboratory is quite as complete, for in it is every chemical substance known to man, all labeled, classified and indexed. 
 Little Journeys to the Homes of the Great - Volume 01 / Little J... 

Tar is a chemical substance left behind by burning tobacco, and it contains most of the carcinogenic compounds in cigarette smoke. 
 Reuters 

Breathalyzers are unsophisticated and insensitive devices that will detect any chemical substance that includes an element of the methyl group of compounds. 
 The South African 