Review For Chapter 6 Test Question Preview (ID: 5113)


Review Questions For Chapter 6 On Chemical Reactions. TEACHERS: click here for quick copy question ID numbers.

What happens in a chemical reaction?
a) atoms are destroyed
b) atoms are rearranged
c) atoms are heated and cooled
d) atoms are created

Which statement about endothermic reactions is correct?
a) energy is always created in the form of heat
b) energy is transferred from the reactants to the surrondings
c) energy is used to force electrons to move to higher energy levels
d) energy is transferred from the surrondings to the reactants

Most of the energy in an isoocotane reaction is released in the form of
a) heat and light
b) sound
c) water
d) electical energy

Which of the following is an example of a decomposition reaction?
a) photosynthesis
b) exchange of ions between two compounds
c) respiration
d) digestion

When water is broken down by electrolysis, the products are
a) water and carbon dioxide
b) oxygen and methane
c) hydrogen gas and oxygen gas
d) hydrogen and oxygen ions

A balanced chemical equation shows the proportions of reactants and products necessary for
a) the reaction to occur
b) electrolysis to occur
c) enery use to be minimized
d) mass to be conserved

What could you do to make yeast dough rise more slowly?
a) add more yeast to the mixture
b) knead the dough more vigorously
c) add mold spores to the dough
d) reduce the temperature

An enzyme is a special kind of catalyst that works to
a) speed up a specific biochemical reaction
b) slow down a chemical reaction
c) break down chemical elements
d) maintain the correct temperature for a reaction

What is the relationship between chemical equilibrium and the rates of forward and reverse reaction?
a) in equilibrium, the forward reaction rate must be greater than the reverse reaction rate
b) in equilibrium, the forward reaction rate must be less than the reverse reation rate
c) in equilibrium, the forward and reverse reaction rates must be equal
d) in equilibrium, both forward and reverse reactions must stop

Increasing the concentration of one substance in an equilibrium reaction favors the reaction that
a) absorbs energy as heat
b) releases energy as heat
c) produces less of the substance
d) produces more of the substance

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