chemical substance

Examples

• All

• For example, there is not an infinite number of naturally occurring elemental chemical substances; the periodic table recognizes only 92 kinds.

  Academic text (1993)

• Large quantities of chemical substances will lead to toothache or gum disease.

  Blog text (7)

• But who would have thought that a chemical substance could produce this effect?

  Fiction book (1994)

• Just a small injection of a chemical substance into the brain through the blood vessels.

  Fiction book (1990)

• The Act would establish as a national policy that new chemical substances should be adequately tested.

  Academic text (1992)

• Herbicides were not widely used in Vermont until after World War II, although experimentation with chemical substances began at the end of the nineteenth century.

  Academic text (1991)

• Biological cells are remarkably organized accumulations of chemical substances, arranged into myriad types of sub-structural entities within the cells.

  Blog text (8)

• The main pollutants causing soil contamination include heavy metals, pesticides, and toxic chemical substances (Tseng 1989).

  Academic text (1994)

• Use of chlorofluorocarbons (CFCs), the manufactured chemical substances that have been linked to stratospheric ozone depletion, was not widespread until the 1960s.

  Academic text (1991)

• A chemical substance is formed during the reaction between hydrogen and oxygen.

Synonyms

C

chemical

vschemical substance

541 3.2

A substance made or used when materials react

focuses on precise composition and on reactions that change atoms or molecules

S

substance

vschemical substance

335 2.8

A physical material that objects are made of

is narrower, naming materials with specific composition used in reactions

How Pure

element

• Specialized

102 3.5

pure

390 1.0

chemical substance

• Specialized

1 3.2

impure

2 4.2

mixture

• Specialized

55 3.5

Surface Forms

Morphology

Etymology