August 2018 Chemistry Regents Questions 21-30 Question Preview (ID: 59740)

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Amines, amides, and amino acids are categories of

a) isomers

b) isotopes

c) organic compounds

d) inorganic compounds

A molecule of which compound has a multiple covalent bond?

a) CH4

b) C2H4

c) C3H8

d) C4H10

Which type of reaction produces soap?

a) polymerization

b) combustion

c) fermentation

d) saponification

For a reaction system at equilibrium, LeChatelier’s principle can be used to predict the

a) activation energy for the system

b) type of bonds in the reactants

c) effect of a stress on the system

d) polarity of the product molecules

Which value changes when a Cu atom becomes a Cu^2+ ion?

a) mass number

b) oxidation number

c) number of protons

d) number of neutrons

Which reaction occurs at the anode in an electrochemical cell?

a) oxidation

b) reduction

c) combustion

d) substitution

What evidence indicates that the nuclei of strontium-90 atoms are unstable?

a) Strontium-90 electrons are in the excited state.

b) Strontium-90 electrons are in the ground state.

c) Strontium-90 atoms spontaneously absorb beta particles.

d) Strontium-90 atoms spontaneously emit beta particles.

Which nuclear emission is listed with its notation?

a) gamma radiation

b) proton

c) neutron

d) alpha particle

The energy released by a nuclear fusion reaction is produced when

a) energy is converted to mass

b) mass is converted to energy

c) heat is converted to temperature

d) temperature is converted to heat

Dating once-living organisms is an example of a beneficial use of

a) redox reactions

b) organic isomers

c) radioactive isotopes

d) neutralization reactions

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