January 2018 Chemistry Regents Questions 21-30 Question Preview (ID: 59757)


Use Your Knowledge Of Chemistry To Answer All Questions In The Data Set. You Will Need Your Chemistry Reference Tables And A Calculator To Answer Some Of The Questions. Good Luck. TEACHERS: click here for quick copy question ID numbers.

Which process involves the transfer of electrons?
a) double replacement
b) neutralization
c) oxidation-reduction
d) sublimation

Which change occurs at the anode in an operating electrochemical cell?
a) gain of protons
b) gain of electrons
c) loss of protons
d) loss of electrons

Which device requires electrical energy to produce a chemical change?
a) electrolytic cell
b) salt bridge
c) voltaic cell
d) voltmeter

Which substance is an Arrhenius acid?
a) HBr
b) NaBr
c) NaOH
d) NH3

Which laboratory process is used to determine the concentration of one solution by using a volume of another solution of known concentration?
a) crystallization
b) distillation
c) filtration
d) titration

Which type of reaction occurs when H+(aq) reacts with OH-(aq)?
a) combustion
b) decomposition
c) fermentation
d) neutralization

According to one acid-base theory, a molecule acts as an acid when the molecule
a) accepts an H+
b) accepts an OH-
c) donates an H+
d) donates an OH-

In which type of reaction can an atom of one element be converted to an atom of another element?
a) addition
b) reduction
c) substitution
d) transmutation

An unstable nucleus spontaneously releases a positron. This is an example of
a) radioactive decay
b) nuclear fusion
c) chemical decomposition
d) thermal conductivity

Which phrase describes a risk associated with producing energy in a nuclear power plant?
a) depletion of atmospheric hydrogen (H2)
b) depletion of atmospheric carbon dioxide (CO2)
c) production of wastes needing long-term storage
d) production of wastes that cool surrounding water supplies

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