CHEM 131 EXAM 3 | QUESTIONS AND ANSWERS |
2025/2026 UPDATE | 100% CORRECT
The more ____________ you use, the larger the enthalpy Answer - reactants
exothermic Answer - This is an example of an __________________ reaction
endothermic Answer - This is an example of an _____________________
reaction
In an exothermic reaction, energy is _____________ to the surroundings
Answer - lost
Hess's Law Answer - If a series of reactions are added together, the enthalpy
change for the total reaction is the sum of the enthalpy changes for the
individual steps.
What is the formula for quantifying heat energy Answer - Heat (q) = mass (m) x
specific heat (Cs) x temp. change (delta T)
Heat is the _________________ of thermal energy between the system and
surroundings Answer - exchange
___________________ is the measure of the amount of thermal energy within
a sample of matter Answer - temperature
, Light is a form of ____________________________ _______________.
Answer - electromagnetic radiation
What is the speed of light in a vacuum? Answer - 3.00 x 10^8 m/s
The _____________________ is the height of the wave Answer - amplitude
The ______________________ is a measure of the distance covered by the
wave Answer - wavelength
The _____________________ is the number of waves that pass a point in a
given period of time Answer - frequency
What is the formula we use to calculate wavelength or frequency? Answer - c =
λν
The energy of light is _____________ proportional to its frequency Answer -
directly
The size of the orbital is indicated by the value for _____ , the principle
quantum number Answer - n
The principal quantum number (n) is a ________________ integer Answer -
positive
The angular momentum quantum number ___ is an integer from ____ to
________ Answer - l; 0 n-1
2025/2026 UPDATE | 100% CORRECT
The more ____________ you use, the larger the enthalpy Answer - reactants
exothermic Answer - This is an example of an __________________ reaction
endothermic Answer - This is an example of an _____________________
reaction
In an exothermic reaction, energy is _____________ to the surroundings
Answer - lost
Hess's Law Answer - If a series of reactions are added together, the enthalpy
change for the total reaction is the sum of the enthalpy changes for the
individual steps.
What is the formula for quantifying heat energy Answer - Heat (q) = mass (m) x
specific heat (Cs) x temp. change (delta T)
Heat is the _________________ of thermal energy between the system and
surroundings Answer - exchange
___________________ is the measure of the amount of thermal energy within
a sample of matter Answer - temperature
, Light is a form of ____________________________ _______________.
Answer - electromagnetic radiation
What is the speed of light in a vacuum? Answer - 3.00 x 10^8 m/s
The _____________________ is the height of the wave Answer - amplitude
The ______________________ is a measure of the distance covered by the
wave Answer - wavelength
The _____________________ is the number of waves that pass a point in a
given period of time Answer - frequency
What is the formula we use to calculate wavelength or frequency? Answer - c =
λν
The energy of light is _____________ proportional to its frequency Answer -
directly
The size of the orbital is indicated by the value for _____ , the principle
quantum number Answer - n
The principal quantum number (n) is a ________________ integer Answer -
positive
The angular momentum quantum number ___ is an integer from ____ to
________ Answer - l; 0 n-1
