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Energy Changes in a Reaction
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* Indicates required question
In an exothermic reaction....
*
1 point
heat energy is taken in
heat energy is released
there is no heat exchange
temperature decreases
What happens to the temperature in a exothermic reaction?
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1 point
temperature increases
temperature decreases
Temperature stays the same
What happens to the temperature in a endothermic reaction?
*
1 point
temperature increases
temperature decreases
Temperature stays the same
Give an example of an exothermic reaction (select all the correct answers)
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1 point
respiration
thermal decomposition
combustion
photosynthesis
citric acid and sodium hydrogen carbonate
Required
Give an example of an endothermic reaction (select all the correct answers)
*
1 point
respiration
thermal decomposition
combustion
photosynthesis
citric acid and sodium hydrogen carbonate
Required
In an endothermic reaction, do the reactants have more or less energy than the products
*
1 point
less
more
the same
give on everyday use of an endothermic reaction (select all correct answers)
*
1 point
handwarmer
cool pack
self heating can
Required
In an exothermic reaction, do the reactants have more or less energy than the products
*
1 point
less
more
the same
give on everyday use of an exothermic reaction (select all correct answers)
*
1 point
handwarmer
cool pack
self heating can
Required
Which of the following reactions is always exothermic?
*
1 point
precipitation
photosynthesis
combustion
thermal decomposition
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