Thermochemistry

Endothermic Reaction Endothermic reaction is a chemical reaction that absorbs heat from surroundings. When energy is taken from the surrounding during a chemical reaction, the temperature of the surrounding will decrease. Example of Endothermic Reaction Decomposition of carbonate metal by heat Decomposition of calcium carbonate by heat CaCO3 → CaO + CO2 Decomposition of nitrate metal by heat Decomposition of … Read more

Exothermic Reaction Exothermic reaction is the chemical reaction that releases heat to the surrounding. When energy is given off during a chemical reaction, the temperature of the surrounding will increase. Example of Exothermic Reaction Reaction Equation Neutralization Diluted sulphuric acid is neutralized by sodium hydroxide aqueous H2SO4 + 2NaOH → Na2SO4 + 2H2O Acid + carbonate Reaction between hydrochloric … Read more

There is energy changes when a chemical reaction takes place. The energy is in the form of heat, could be released or absorbed during the chemical reaction. There are 2 types of reaction with change in heat energy: a. Exothermic reaction b. Endothermic reaction The chart below shows the difference between this 2 reactions.

Revision Notes Energy Changes in Chemical Reactions Exothermic Reactions Endothermic Reactions Energy Level Diagram Energy changes and formations of chemical bonds Applications of exothermic and endothermic reactions Heat of Reaction Calculating Heat Change Finding Heat of Reaction Heat of Precipitation Heat of Displacement Heat of Neutralisation Heat of Combustion Fuel value Videos Exothermic and Endothermic … Read more