The volume increases and the reaction is endothermic.
A solid is produced and the reaction is exothermic.
A solution is produced and the reaction is endothermic.
A solution is produced and the reaction is exothermic.
Adding ammonium thiocyanate to barium hydroxide
Melting of mercury metal
Sublimation of dry ice
Neutralization of acid and base
The reaction is endothermic.
Energy is absorbed by the system.
The total energy change for bond formation is greater than that for bond breaking.
The product possesses more energy than the reactants.
The energy of the reactants is less than that of the product.
For each mole of the solid product formed in the reaction, 10.2 kJ of heat is released.
The energy involved in bond forming is greater than that of bond breaking.
If the reaction is carried out in an insulated container, the temperature in the container would increase.
The total energy change in bond formation is less than that of bond breaking.
The products possess less energy than the reactants.
The formation of H-I bonds absorbs energy.
The number of bonds broken is greater than the number of bonds formed.
The process is exothermic.
The process is endothermic.
Very little potassium chloride dissolves in water.
All solids dissolve with a temperature decrease.
Coke contains impurities
The reaction is exothermic
Coke is an oxidising agent
The reaction is endothermic
Magnesium chloride is soluble in water
Total energy of the products is greater than that of the reactants
One mole of magnesium produces one mole of hydrogen molecules
Total energy of the products is less than that of the reactants
Reaction 1 only
Reactions 1 and 3 only
Reactions 1 and 2 only
Reactions 2 and 3 only