KSA Science Grade 11 Practice Questions - Kentucky Summative Assessment Science - Grade 11 Exam

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A student measures the temperature change during a reaction between baking soda and vinegar in a beaker and observes that the temperature drops from 22°C to 15°C. How should this reaction be classified?

Exothermic reaction because energy is released to the surrounding air Endothermic reaction because thermal energy is absorbed from the surroundings Synthesis reaction because thermal energy creates new chemical bonds Combustion reaction because thermal energy is rapidly converted into kinetic energy

Correct Answer:

Endothermic reaction because thermal energy is absorbed from the surroundings

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