June 2017 Chemistry Regents Questions 21-30 Question Preview (ID: 59774)


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.

In which 1.0-gram sample are the particles arranged in a crystal structure?
a) CaCl2(s)
b) C2H6(g)
c) CH3OH(ℓ)
d) CaI2(aq)

When a reversible reaction is at equilibrium, the concentration of products and the concentration of reactants must be
a) decreasing
b) increasing
c) constant
d) equal

In chemical reactions, the difference between the potential energy of the products and the potential energy of the reactants is equal to the
a) activation energy
b) ionization energy
c) heat of reaction
d) heat of vaporization

What occurs when a catalyst is added to a chemical reaction?
a) an alternate reaction pathway with a lower activation energy
b) an alternate reaction pathway with a higher activation energy
c) the same reaction pathway with a lower activation energy
d) the same reaction pathway with a higher activation energy

What is the name of the compound with the formula CH3CH2CH2NH2?
a) 1-propanol
b) 1-propanamine
c) propanal
d) propanamide

Which compound is an isomer of C2H5OC2H5?
a) CH3COOH
b) C2H5COOCH3
c) C3H7COCH3
d) C4H9OH

Ethanoic acid and 1-butanol can react to produce water and a compound classified as an
a) aldehyde
b) amide
c) ester
d) ether

During an oxidation-reduction reaction, the number of electrons gained is
a) equal to the number of electrons lost
b) equal to the number of protons gained
c) less than the number of electrons lost
d) less than the number of protons gained

Which process requires energy for a nonspontaneous redox reaction to occur?
a) deposition
b) electrolysis
c) alpha decay
d) chromatography

Which pair of compounds represents one Arrhenius acid and one Arrhenius base?
a) CH3OH and NaOH
b) CH3OH and HCl
c) HNO3 and NaOH
d) HNO3 and HCl

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