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WorksheetsF5 Thermochemistry
Total questions: 15
Worksheet time: 12mins
What does it means with THERMOCHEMISTRY?
Study of electrical energy in a chemical reaction
Study of potential energy in a chemical reaction
Study of heat energy in a chemical reaction
Study of magnetic energy in a chemical reaction
What is exothermic reaction?
Release heat to the surrounding
Absorb heat from surrounding
What is endothermic reaction?
Heat released to the surrounding
Heat absorbed from the surrounding
What is the name of the reaction?
Respiration
Combustion
Playing fire
Photosynthesis
What type of reaction?
Exothermic
Endothermic
For exothermic reaction, temperature after the reaction is _______ than the temperature before the reaction
equal
higher
lower
For endothermic reaction, temperature after the reaction is _______ than the temperature before the reaction
equal
higher
lower
Heat is _________ when bond is broken
Absorbed
Released
Sustained
Heat is _________ when bond is formed
Absorbed
Released
Sustained
Energy level diagram for exothermic reaction
Energy level diagram for endothermic reaction
The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?
66.5 J
665 J
0.0266 J
0.665 J
