Chemists ordinarily work with weighable quantities of elements and compounds.
Different chemical elements and compounds in the atmosphere absorb the starlight differently, and thus have distinctive spectral signatures.
Edmond also studied the chemical cycles of other elements and compounds in the ocean.
The chapter presents an account of atoms, elements, and compounds.
Contrast between natural sources of hazardous elements and compounds and types and sources of anthropogenic contaminants and pollutants.
Many behavioral changes of this species have been correlated with changes in trace elements and compounds in the water.
That is, most of their mass consists of elements and compounds that vaporize at "very high" temperatures.
The closure of the cycle was estimated for individual elements and compounds.
Aluminum sulfate can thus form alums with sulfates of the singly charged cations of potassium, sodium, ammonium, cesium, and other elements and compounds.
Volatile elements and compounds in the magma (principally water, carbon dioxide, nitrogen, and sulfur compounds) escape and are added to the atmosphere and hydrosphere.
Small quantities of other volatile elements and compounds also are present, such as hydrogen, helium, nitrogen, hydrogen chloride, hydrogen fluoride, and mercury.
