Ch 7: Question Preview (ID: 5070)

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A chemical reaction that transfers energy from the reactants to the surrounding is referred to as
a) exothermic b) elemental c) endothermic d) endergonic
A change in color is a sign that a(n) _____is taking place
a) endothermic reaction b) chemical reaction c) exothermic reaction d) elemental reaction
Sound is not made of matter because is has no ______ or __________
a) space/time b) elements/proportions c) mass/volume d) ice/water
In a ________ reaction the reactants are broken down into other substances
a) decomposition b) synthesis c) endothermic d) exothermic
A substance is ______________ when it gaines electrons
a) oxidized b) reduced c) reversed d) unhappy
When a reaction is at equillibrium, increasing pressure favors the reaction that produces
a) more gas b) less gas c) no gas d) electrons
A sign that a chemical reaction is taking place is release of energy in the form of __________ or ___________
a) heat, light b) endothermic, exothermic c) apple pie, baseball d) villains, victory
A(n) ____________ reaction is one in which heat is transferred from the surrounding reactants
a) exothermic b) endothermic c) combustive d) redox
A reaction that involves the transfer of ____________ is called a(n) ________reaction
a) electrons, redox b) more gas, less gas c) credit, financial d) heat, light
Equilibrium is achieved when the __________ and ____________________ reactions continue to take place at the same rate
a) forward, reverse b) hot, cold c) old, new d) fast,slow
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