Chemistry_Test

Every substance, whether naturally occurring or artificially produced, consists of one or more of the hundred-odd species of atoms that have been identified as _____________ .

Modern chemistry, aided by increasingly sophisticated instruments, studies materials as small as single atoms and as large and complex as _____________ (deoxyribonucleic acid), which contains millions of atoms.

Branches of __________ include inorganic, organic , physical, and analytical chemistry; biochemistry; electrochemistry; and geochemistry.

Anything that has mass and occupies space.

Science that deals with the properties, composition, and structure of substances (elements and compounds), the reactions and transformations they undergo, and the energy released or absorbed during those processes.

Chemistry also is concerned with the utilization of natural substances and the creation of artificial ones.

The 20th century saw dramatic advances in the comprehension of the marvelous and complex chemistry of living organisms, and a molecular interpretation of health and disease holds great promise.

A negatively charged particle in an atom, with a
comparatively very small mass.

Chemistry involves the study of the atomic composition and structural architecture of substances, as well as the varied interactions among substances that can lead to sudden, often violent ____________.

_________________ uses the theoretical and experimental information obtained in chemistry to build chemical plants and make useful products.

Cooking, fermentation, glass making, and metallurgy are all ____________________________ that date from the beginnings of civilization.