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WorksheetsEXOTHERMIC AND ENDOTHERMIC REACTION
Total questions: 10
Worksheet time: 4mins
Which of the following reaction (s) is (are) exothermic?
Evaporation of water.
Freezing of water.
Melting of salt
Sublimation of dry ice, CO2 (s)
Which of the following is an exothermic reaction?
Photosynthesis
Displacement reaction
Dissolving ammonium chloride
Crytallization of sodium thiosulphate
Temperature usually _____ in EXOthermic reactions.
increases
decreases
stays the same
Temperature usually ____________in endothermic reactions.
increases
decreases
stay the same.
A change in matter in which heat is absorbed is .....reaction
exothermic
endothermic
A chemical reaction in which more energy is absorbed than is released is endothermic
True
False
Which of these is an endothermic reaction?
Respiration
Combustion
Neutralisation
Dissolving ammonium salt
Photosyntheis is an_________________ reaction.
exothermic
endothermic
In a laboratory activity, compound P is crytallize in water in a test tube. It is noted that the wall of the test tube becomes cold. Which of the following is most probably compound P?
Ammonia
Hydrochloric acid
Ammonia
Sodium thiosulphate
In an exothermic reaction, heat is ... to (from ) the surrounding.
absorbed
released
