WorksheetsTermochemistry
Total questions: 20
Worksheet time: 16mins
What type of chemical reaction absorbs energy and requires energy for the reaction to occur?
Endothermic
Exotermic
Exothermic
Endotermic
Examples of exothermic
Acids + alkalis
Cooking an egg
Respiration
Evaporating liquid water
Examples of endothermic reactions
Photosynthesis
Ice melting
Respiration
Sodium carbonate + ethanoic acid
Water + calcium oxide
if less heat energy is released in making bonds in the products than is taken in when breaking bonds in the reactants
Endothermic
Exotermic
Exothermic
Entrothermic
if more heat energy is released in making bonds in the products than is taken in when breaking bonds in the reactants
Exothermic
Endothermic
Exotermic
Endotermic
When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?
The solution at the end is acidic
The reaction is reversible
The reaction is exothermic
The reaction is endothermic
When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?
Endothermic
Decomposition
Exothermic
Indothermic
In an endothermic reaction, heat is ...
taken in
given out
Keputusan berikut diperolehi apabila termometer diletakkan di dalam campuran bahan X dan air.
Initial reading/ Bacaan awal : 30⁰C
Final reading/ Bacaan akhir : 22⁰C
What is material X? Apakah bahan X?
Asid sulfurik pekat
Kuprum sulfat
Ammonium nitrat
Natrium hidroksida
During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______.
Warm
Cold
Bubbly
Damp
