Question

Identify the chemical reactions as endothermic, exothermic, or neither. An egg cooking: A candle burning: Plaster and water combining and becoming warm: Salt being added to water, with no change in temperature:

Answer 1

An egg cooking:

✔ endothermic

A candle burning:

✔ exothermic

Plaster and water combining and becoming warm:

✔ exothermic

Salt being added to water, with no change in temperature:

✔ neither

Step-by-step explanation:

Answer 2

An egg cooking is an endothermic reaction.

A candle burning and Plaster & water combining and becoming warm are exothermic reaction.

Salt being added to water, with no change in temperature neither endothermic nor exothermic reaction.

Explanation :

• Endothermic reaction : It is a type of reaction in which energy is absorbed in the form of heat from the surroundings.

• Exothermic reaction : It is a type of reaction in which energy is released in the form of heat from the system.

An egg cooking : In this process, the energy is absorbed in the form of heat.

A candle burning and Plaster & water combining and becoming warm : In both the process, the energy is released in the form of heat.

Salt being added to water, with no change in temperature : In this process, neither energy released nor absorbed.