January 2019 Chemistry Regents Questions 21-30 Question Preview (ID: 59734)


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.

According to which theory or law is a chemical reaction most likely to occur when two particles with the proper energy and orientation interact with each other?
a) atomic theory
b) collision theory
c) combined gas law
d) law of conservation of matter

Addition of a catalyst can speed up a reaction by providing an alternate reaction pathway that has a
a) lower activation energy
b) higher activation energy
c) lower heat of reaction
d) higher heat of reaction

Which compound is saturated?
a) butane
b) ethene
c) heptene
d) pentyne

An alcohol and an ether have the same molecular formula, C2H6O. These two compounds have
a) the same functional group and the same physical and chemical properties
b) the same functional group and different physical and chemical properties
c) different functional groups and the same physical and chemical properties
d) different functional groups and different physical and chemical properties

Which metal is most easily oxidized?
a) Ag
b) Co
c) Cu
d) Mg

Which substance is an Arrhenius acid?
a) H2
b) HCl
c) KCl
d) NH3

Which statement describes an electrolyte?
a) An electrolyte conducts an electric current as a solid and dissolves in water.
b) An electrolyte conducts an electric current as a solid and does not dissolve in water.
c) When an electrolyte dissolves in water, the resulting solution conducts an electric current.
d) When an electrolyte dissolves in water, the resulting solution does not conduct an electric current.

Which type of reaction occurs when an Arrhenius acid reacts with an Arrhenius base to form a salt and water?
a) combustion
b) decomposition
c) neutralization
d) saponification

Compared to the energy released per mole of reactant during chemical reactions, the energy released per mole of reactant during nuclear reactions is
a) much less
b) much greater
c) slightly less
d) slightly greater

Which phrase describes a risk of using the radioisotope Co-60 in treating cancer?
a) production of acid rain
b) production of greenhouse gases
c) increased biological exposure
d) increased ozone depletion

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