What is "chemical composition"

Usage examples of "chemical composition".

When you look in the visible and near-infrared spectrum for telltale signatures of chemical composition, sure enough you discover water ice in the polar caps, and enough water vapor in the air to account for the clouds.

And living organisms themselves constantly change their environment, altering its chemical composition by eating, breathing, excreting.

Astronomical spectroscopy is able to determine the chemical composition of collections of stars billions of light-years away.

It must explain their differences in chemical composition: Mercury is made of iron, nickel, and silicate rock.

Besides the external order of matter revealed in space-form, there exists also an inner qualitative order expressed in a body's chemical composition.

He's an organic chemist, and he had been looking at all the data on the Halo, and plotting body chemical composition as a function of distance from the Sun.

Tuned frequency lasers offered the chemical composition of every organ, at submillimeter resolution.

She pressed the button a dozen times, getting that many sequence grids from the slot and explaining why a statistical analysis had failed in each case to confirm that the pattern was indeed an attempt to convey an intelligible picture or a series of coded symbols that might tell us something about the senders' physical characteristics, the chemical composition of life on their planet and so forth.

A generation ago it was supposed theoretically impossible that man should ever know the chemical composition of the fixed stars.

There was no clue to the chemical composition of the transparent barrier, and conceivably it might be something which a tongue of fire could cut like cheese.

They absorb oxygen and exhale carbonic acid, performing the same office in this respect as animals, which they most resemble in chemical composition.

The price varies as widely as the yield, the value depending upon the chemical composition.