_chemical

In both of these cases -- that of the starch and of the sawdust -- what we call a _chemical change_ would have taken place between the acid and the starch, and between the strong acid and the sawdust.

A Handbook of Health Woods Hutchinson 1896

Since the energy possessed by coal only becomes available when the coal is made to undergo a chemical change, it is sometimes called _chemical energy_.

An Elementary Study of Chemistry William McPherson

The expression _chemical elements_ is merely a summary of certain observed facts.

The Story of Alchemy and the Beginnings of Chemistry M. M. Pattison Muir

Cuvier, in one of a series of lectures, delivered at Paris, in the spring of last year, says, "the name chemistry, itself, comes from the word _chim_, which was the ancient name of Egypt;" and he states that minerals were known to the Egyptians "not only by their external characters, but also by what we at the present day call their _chemical characters_."

The Mirror of Literature, Amusement, and Instruction Volume 17, No. 479, March 5, 1831 Various

~ The agency which causes substances to combine and which holds them together when combined is called _chemical affinity_.

An Elementary Study of Chemistry William McPherson

Such substances are called _chemical compounds_, and differ from mechanical mixtures in that the substances producing them lose their own characteristic properties.

An Elementary Study of Chemistry William McPherson

Changes of this kind are called _chemical changes_.

An Elementary Study of Chemistry William McPherson

[Footnote *: This mode of explaining the phenomena of the Voltaic pile is called the _chemical theory_ of electricity, because it ascribes the cause of these phenomena to certain chemical changes which take place during their appearance.

Conversations on Chemistry, V. 1-2 In Which the Elements of that Science Are Familiarly Explained and Illustrated by Experiments 1813