Endothermic And Exothermic Reactions Question Preview (ID: 41134)
Review Over The Basics Of Endothermic And Exothermic Reactions.
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Which of the following is NOT a sign of a chemical reaction?
a) Melting
b) Bubbles
c) Temperature Change
d) Precipitate
In an EXOTHERMIC reaction ____.
a) The temperature drops
b) The temperature increases
c) The temperature does not change
d) The surroundings feel cold
More energy from bonds FORMING results in a _____reaction
a) Exothermic
b) Endothermic
c)
d)
When heat flows out of the system the reaction is called
a) Exothermic
b) Endothermic
c)
d)
In an Endothermic reaction ____.
a) The temperature drops
b) The temperature increases
c) Bond are being formed
d) It feels hot
Energy is absorbed during a ____ reaction
a) Exothermic
b) Endothermic
c)
d)
More energy from bonds BREAKING results in a ___ reaction
a) Exothermic
b) Endothermic
c)
d)
Which is true?
a) Exothermic reactions get cold
b) Endothermic reactions get hot
c) Exothermic reactions cause a temperature drop
d) Endothermic reactions cause a decrease in temperature
When bonds break
a) Energy is required
b) Energy is released
c)
d)
When bonds form
a) Energy is required
b) Energy is released
c)
d)
An ice cube melting into a puddle of water is an example of a/an ____
a) Exothermic process
b) Endothermic process
c) Chemical Reaction
d) Equilibrium
Which of the following would increase the speed of a chemical reaction?
a) Dropping the temperature
b) Reducing the concentration
c) Increasing the temperature
d) Removing a catalyst
When liquid water freezes to form an ice cube this is an example of a/an ___
a) Exothermic process
b) Endothermic Process
c) Bonds breaking
d) Equilibrium
Which statement is true?
a) Breaking bonds releases energy
b) Forming bonds requires energy
c) Breaking bonds requires energy
d) Forming bonds absorbs energy
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