1. what is endotharmic reaction ?
Give 3 examples.
2.what is termite reaction ? Give some Example.
Answers
Explanation:
1. a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system.
example. Melting ice cubes.
Melting solid salts.
Evaporating liquid water.
Converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes
2.Thermite is a pyrotechnic composition of metal powder and metal oxide. When ignited by heat, thermite undergoes an exothermic reduction-oxidation reaction. Most varieties are not explosive, but can create brief bursts of heat and high temperature in a small area
examples copper thermite reaction using copper oxide and elemental aluminium can be used for creating electric joints in a process called cadwelding, that produces elemental copper (it may react violently): 3 CuO + 2 Al → 3 Cu + Al2O.