Which is endothermic?
A) Freezing water
B) Burning wood
C) Condensing water vapor
D) Melting ice
Correct Answer:
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Q73: Hydrocarbons are composed of
A)hydrogen,only.
B)carbon,only.
C)hydrogen and carbon.
D)hydrogen,carbon,and oxygen.
Q74: Balance the following chemical equation using the
Q75: In an exothermic reaction
A)the reactants have greater
Q76: Reactions which liberate heat are
A)endothermic.
B)exothermic.
C)isothermic.
D)protothermic.
Q77: When the equation Al(OH)3 + H2SO4
Q79: Reactions which absorb heat are
A)endothermic.
B)exothermic.
C)isothermic.
D)protothermic.
Q80: Which is exothermic?
A)Boiling water
B)Melting ice
C)Condensing water vapor
D)The
Q81: According to the Greenhouse Effect,rising levels of
Q82: The quantity of heat produced by a
Q83: Which of the following combinations will result
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