Chem 131 Exam 3 UPDATED
QUESTIONS AND CORRECT ANSWERS
The more ____________ you use, the larger the enthalpy - CORRECT ANSWER reactants
exothermic - CORRECT ANSWER This is an example of an __________________ reaction
endothermic - CORRECT ANSWER This is an example of an _____________________
reaction
In an exothermic reaction, energy is _____________ to the surroundings - CORRECT ANSWER
lost
Hess's Law - CORRECT 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 - CORRECT 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 -
CORRECT ANSWER exchange
___________________ is the measure of the amount of thermal energy within a sample of matter -
CORRECT ANSWER temperature
Light is a form of ____________________________ _______________. - CORRECT ANSWER
electromagnetic radiation
What is the speed of light in a vacuum? - CORRECT ANSWER 3.00 x 10^8 m/s
The _____________________ is the height of the wave - CORRECT ANSWER amplitude
, The ______________________ is a measure of the distance covered by the wave - CORRECT
ANSWER wavelength
The _____________________ is the number of waves that pass a point in a given period of time -
CORRECT ANSWER frequency
What is the formula we use to calculate wavelength or frequency? - CORRECT ANSWER c=
λν
The energy of light is _____________ proportional to its frequency - CORRECT ANSWER
directly
The size of the orbital is indicated by the value for _____ , the principle quantum number -
CORRECT ANSWER n
The principal quantum number (n) is a ________________ integer - CORRECT ANSWER
positive
The angular momentum quantum number ___ is an integer from ____ to ________ - CORRECT
ANSWER l; 0 n-1
The angular momentum quantum number indicates the ___________ of the orbital - CORRECT
ANSWER shape
The magnetic quantum number _____ is an integer with values from __ to __ - CORRECT ANSWER
ml; -l +l
The magnetic quantum number indicates the spatial __________________ of the orbital - CORRECT
ANSWER orientation
S orbitals are what shape? - CORRECT ANSWER spherical
P orbitals are what shape? - CORRECT ANSWER dumbbell
QUESTIONS AND CORRECT ANSWERS
The more ____________ you use, the larger the enthalpy - CORRECT ANSWER reactants
exothermic - CORRECT ANSWER This is an example of an __________________ reaction
endothermic - CORRECT ANSWER This is an example of an _____________________
reaction
In an exothermic reaction, energy is _____________ to the surroundings - CORRECT ANSWER
lost
Hess's Law - CORRECT 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 - CORRECT 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 -
CORRECT ANSWER exchange
___________________ is the measure of the amount of thermal energy within a sample of matter -
CORRECT ANSWER temperature
Light is a form of ____________________________ _______________. - CORRECT ANSWER
electromagnetic radiation
What is the speed of light in a vacuum? - CORRECT ANSWER 3.00 x 10^8 m/s
The _____________________ is the height of the wave - CORRECT ANSWER amplitude
, The ______________________ is a measure of the distance covered by the wave - CORRECT
ANSWER wavelength
The _____________________ is the number of waves that pass a point in a given period of time -
CORRECT ANSWER frequency
What is the formula we use to calculate wavelength or frequency? - CORRECT ANSWER c=
λν
The energy of light is _____________ proportional to its frequency - CORRECT ANSWER
directly
The size of the orbital is indicated by the value for _____ , the principle quantum number -
CORRECT ANSWER n
The principal quantum number (n) is a ________________ integer - CORRECT ANSWER
positive
The angular momentum quantum number ___ is an integer from ____ to ________ - CORRECT
ANSWER l; 0 n-1
The angular momentum quantum number indicates the ___________ of the orbital - CORRECT
ANSWER shape
The magnetic quantum number _____ is an integer with values from __ to __ - CORRECT ANSWER
ml; -l +l
The magnetic quantum number indicates the spatial __________________ of the orbital - CORRECT
ANSWER orientation
S orbitals are what shape? - CORRECT ANSWER spherical
P orbitals are what shape? - CORRECT ANSWER dumbbell
