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CHEMISTRY B CUMULATIVE EXAM 2024/2025
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CHEMISTRY B CUMULATIVE EXAM 2024/2025
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CHEMISTRY B CUMULATIVE EXAM2024/2025
Which statement defines specific heat capacity for a given sample?
the temperature of a given sample
the temperature that a given sample can withstand
the quantity of heat that is required to raise the sample's temperature by 1°C (Kelvin)
the quantity of heat that is required to raise 1 g of the sample by 1°C (Kelvin) at a constant pressure -
Precise Answer ✔✔the quantity of heat that is required to raise 1 g of the sample by 1°C (Kelvin) at a
constant pressure
Consider the three equations below. Which statement do these reactions best support?
Beta decay occurs only in certain atoms.
Alpha decay occurs only in certain atoms.
Chain reactions play important roles in the process of nuclear fission.
Nuclear fusion plays an important role in making elements that are heavier than helium. - Precise
Answer ✔✔Nuclear fusion plays an important role in making elements that are heavier than helium.
An acid is a substance that increases the concentration of H3O+ ions in solution. Look at the reaction
below of phenol (C6H5OH) with water: Which reactant acts as an acid by contributing a H+ ion to create
H3O+ in the chemical equation?
C6H5OH(aq)
H2O(l)
C6H5O-(aq)
H3O+(aq) - Precise Answer ✔✔C6H5OH(aq)
Why is citric acid added to food?
to add color
to add tartness
, to add bitterness
to add sweetness - Precise Answer ✔✔to add tartness
A substance is dissolved in water and produces hydronium ions. This occurs when hydrogen ions move
from the substance to associate with water molecules. Which term best matches the behavior of this
substance?
Arrhenius base
Arrhenius acid
Bronsted-Lowry base
Bronsted-Lowry acid - Precise Answer ✔✔Arrhenius acid
Which is an image of a scintillation counter? - Precise Answer ✔✔D) Box with cable
Why would a doctor most likely restrict a patient's contact with other people while the patient receives
internal radiation?
The patient's stress and anxiety would be eliminated.
High levels of radiation can diffuse through the patient's skin.
Social contact would increase the effect of the radiation treatment.
Radioactive material can leave the patient's body through saliva, sweat, and urine. - Precise Answer
✔✔Radioactive material can leave the patient's body through saliva, sweat, and urine.
Which is true about reaction rates?
High reaction rates occur only in spontaneous reactions.
Low reaction rates occur only in nonspontaneous reactions.
Reaction rates are not dependent on high or low activation energies.
Reaction rates are not related to spontaneity. - Precise Answer ✔✔Reaction rates are not related to
spontaneity.
Which best describes what forms in nuclear fission?
two smaller, more stable nuclei
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