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Midterm Lec 1

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

Energy travels as electromagnetic waves, which have two key features:

Back (Answer)

Wavelength and frequency

#2
Front (Question)

→ distance between two wave peaks -Measured in NANOMETERS (nm)

Back (Answer)

Wavelength

#3
Front (Question)

the wavelength (in nm) where light passes through the most (peak transmittance)

Back (Answer)

Nominal wavelength

#4
Front (Question)

_ errors in setting the wavelength can cause big mistakes in absorbance readings

Back (Answer)

small

#5
Front (Question)

Energy (E) and wavelength are connected by

Back (Answer)

Planck’s formula

#6
Front (Question)

Planck’s formula:

Back (Answer)

Shorter wavelength → higher energy

#7
Front (Question)

Wavelength Regions Visible spectrum:

Back (Answer)

400 - 700 nm

#8
Front (Question)

Wavelength Regions Ultraviolet region (UV):

Back (Answer)

<400 nm

#9
Front (Question)

Wavelength Regions Infrared region (IR):

Back (Answer)

> 700 nm

#10
Front (Question)

Wavelength Regions Planck’s formula:

Back (Answer)

E = hv

#11
Front (Question)

Planck’s formula: E means

Back (Answer)

is the energy of a photon in Joules

#12
Front (Question)

Planck’s formula: h means

Back (Answer)

constant (6.626 x 10-27 erg sec) → Bishop

#13
Front (Question)

Planck’s formula: v means

Back (Answer)

frequency

#14
Front (Question)

the number of vibrations of wave motion per second.

Back (Answer)

Frequency

#15
Front (Question)

The lower the wave frequency, the longer the _

Back (Answer)

wavelength

#16
Front (Question)

The wavelength is inversely related to _ and _; the _ the wavelength, the higher the frequency and energy, and vice versa.

Back (Answer)

frequency and energy shorter

#17
Front (Question)

how many wave vibrations happen each second →Measured in _

Back (Answer)

Frequency Hz (Hertz)

#18
Front (Question)

Low frequency =

Back (Answer)

longer wavelength

#19
Front (Question)

High frequency =

Back (Answer)

shorter wavelength & more energy

#20
Front (Question)

Colorimetry the measurement of light intensity in a narrower wavelength.

Back (Answer)

Spectrophotometric measurement

#21
Front (Question)

Colorimetry the measurement of light intensity using a specific wavelength

Back (Answer)

Photometric measurement

#22
Front (Question)

It involves measurement of the light transmitted by a solution to determine the concentration of the light-absorbing substances in the solution.

Back (Answer)

Spectrophotometry

#23
Front (Question)

a device that measures the wavelengths of light or the intensity of radiation.

Back (Answer)

Spectrophotometry

#24
Front (Question)

It means =

Back (Answer)

Transmitted light thru the sample