CHEMISTRY 103 EXAM 3 QUESTIONS WITH
CORRECT ANSWERS 2026
Absorption - CORRECT ANSWER -atoms gain energy and become excited
Emission - CORRECT ANSWER -excess energy of excited atoms can be released
Electromagnetic radiation - CORRECT ANSWER -oscillating electric and magnetic fields
characterized in wavelength and frequency
Node - CORRECT ANSWER -a point with zero amplitude
Wavelength - CORRECT ANSWER -λ, lambda, cm, m, mm, distance between a point on a wave
and the corresponding point in the next wave
Frequency - CORRECT ANSWER -ν, uu, 1/s, Hz, the number of waves that pass through during a
certain period of time
C - CORRECT ANSWER -speed of wave, 3.00x10^8
Planck's equation - CORRECT ANSWER -λ=h/mv
E=h∙ν
C= λ∙ν or ν=c/λ
E=hc/λ
Light - CORRECT ANSWER -electromagnetic energy, acts as a wave and a particle
, Photoelectron effect - CORRECT ANSWER -changing amplitude will result in same amount of
emitted electrons, changing frequency/wavelength: higher emitted electrons
After threshold is passed, increased amplitude = increased electrons
The 1911 theory - CORRECT ANSWER -electrons orbit the nucleus much like planets orbit the
sun
Laws of thermodynamics - CORRECT ANSWER -0. In the game of energy we have the means to
determine the winner
1. You cannot win: matter and energy are conserved
2. You cannot break-even: entropy, you cannot return to an energy state
3. You cannot get out of the game: absolute zero is unattainable
First law of thermodynamics - CORRECT ANSWER -total energy much remain the same, nuclear
warfare only exception (E=mc^2)
Endothermic - CORRECT ANSWER -IN
Exothermic - CORRECT ANSWER -OUT
Positive sign convention - CORRECT ANSWER -system gains energy
Negative sign convention - CORRECT ANSWER -system loses energy
Line emission spectrum - CORRECT ANSWER -passing a beam of light from excited neon or
hydrogen atoms through a prism and observing a select array of colors
CORRECT ANSWERS 2026
Absorption - CORRECT ANSWER -atoms gain energy and become excited
Emission - CORRECT ANSWER -excess energy of excited atoms can be released
Electromagnetic radiation - CORRECT ANSWER -oscillating electric and magnetic fields
characterized in wavelength and frequency
Node - CORRECT ANSWER -a point with zero amplitude
Wavelength - CORRECT ANSWER -λ, lambda, cm, m, mm, distance between a point on a wave
and the corresponding point in the next wave
Frequency - CORRECT ANSWER -ν, uu, 1/s, Hz, the number of waves that pass through during a
certain period of time
C - CORRECT ANSWER -speed of wave, 3.00x10^8
Planck's equation - CORRECT ANSWER -λ=h/mv
E=h∙ν
C= λ∙ν or ν=c/λ
E=hc/λ
Light - CORRECT ANSWER -electromagnetic energy, acts as a wave and a particle
, Photoelectron effect - CORRECT ANSWER -changing amplitude will result in same amount of
emitted electrons, changing frequency/wavelength: higher emitted electrons
After threshold is passed, increased amplitude = increased electrons
The 1911 theory - CORRECT ANSWER -electrons orbit the nucleus much like planets orbit the
sun
Laws of thermodynamics - CORRECT ANSWER -0. In the game of energy we have the means to
determine the winner
1. You cannot win: matter and energy are conserved
2. You cannot break-even: entropy, you cannot return to an energy state
3. You cannot get out of the game: absolute zero is unattainable
First law of thermodynamics - CORRECT ANSWER -total energy much remain the same, nuclear
warfare only exception (E=mc^2)
Endothermic - CORRECT ANSWER -IN
Exothermic - CORRECT ANSWER -OUT
Positive sign convention - CORRECT ANSWER -system gains energy
Negative sign convention - CORRECT ANSWER -system loses energy
Line emission spectrum - CORRECT ANSWER -passing a beam of light from excited neon or
hydrogen atoms through a prism and observing a select array of colors
