Introduction to Analytics (Analytical Chemistry)

Fill-in-the-blank flashcards covering key concepts from the analytical chemistry lecture.

Analytical chemistry is the measurement or __ science.

measurement science

Analytical chemistry is a measurement science which consists of a set of ideas and methods which are useful in all fields of science, engineering, and __.

medicine

Analytical chemistry has two definitions: one is the measurement science, the other defines chemistry as the area responsible for characterizing the composition of matter, which can be done qualitatively or __.

quantitative

Qualitative analysis answers what is present in a sample, while quantitative analysis answers __.

how much

The instrument using X-ray fluorescence to determine elemental composition can be handheld or stationary; the technique is called __.

X-ray fluorescence (XRF)

Atomic Absorption Spectrometry (AAS) requires the sample to be in a __ form.

solution (liquid) form

Beer-Lambert's law states that absorbance is directly proportional to __.

concentration

In gas chromatography, the mobile phase is __.

gas

In high-performance liquid chromatography (HPLC), the mobile phase is __.

a liquid

In chromatography, polar substances interact with polar beads and move __.

slower

Calibration and the phrase 'garbage in, garbage out' indicate that the __.

results depend on the input data fed into the instrument

A chromatogram displays results as __, with peaks corresponding to different components.

peaks

XRD stands for __ and uses diffraction of X-rays to identify minerals.

X-ray Diffraction

Sampling is the process of collecting a small mass of material whose composition accurately represents the __.

bulk

Gravimetry and __ are classical (wet chemical) methods.

volumetry

Under instrumental methods, common categories include optical, separation, and __.

electroanalytical

The GC/HPLC detector readout is shown as peaks on a chromatogram; the x-axis represents and the y-axis represents .

time; intensity

In XRD, the x-axis provides the scattering angles, typically in __ (degrees).

degrees