SCH4U – Thermochemistry Question
and answers verified to pass 2025
Thermochemistry - correct answer the study of the energy changes that
accompany physical or chemical changes in matter
Thermal energy - correct answer energy available from a substance as a
result of the motion of its molecules
Chemical system - correct answer a set of reactants and products under
study, usually represented by a chemical equation
Surroundings - correct answer all matter around the system that is capable of
absorbing or releasing thermal energy
Heat - correct answer amount of energy transferred between substances
Temperature - correct answer average kinetic energy of the particles in a
sample of matter
Exothermic - correct answer releasing thermal energy as heat flows out of the
system;
Exothermic molar enthalpy - correct answer indicated by a - sign
Endothermic - correct answer absorbing thermal energy as heat flows into the
system
and answers verified to pass 2025
Thermochemistry - correct answer the study of the energy changes that
accompany physical or chemical changes in matter
Thermal energy - correct answer energy available from a substance as a
result of the motion of its molecules
Chemical system - correct answer a set of reactants and products under
study, usually represented by a chemical equation
Surroundings - correct answer all matter around the system that is capable of
absorbing or releasing thermal energy
Heat - correct answer amount of energy transferred between substances
Temperature - correct answer average kinetic energy of the particles in a
sample of matter
Exothermic - correct answer releasing thermal energy as heat flows out of the
system;
Exothermic molar enthalpy - correct answer indicated by a - sign
Endothermic - correct answer absorbing thermal energy as heat flows into the
system
