define endothermic and exothermic change
Asked by arajeevshashank | 7th Nov, 2017, 08:41: PM
A chemical reaction in which heat is given out is called an exothermic reaction. It causes a rise in temperature.
Respiration, rusting, burning of coal, petrol and kerosene are some common examples of exothermic reactions.
A lot of heat is produced when carbon burns in oxygen to form carbon dioxide.
A chemical reaction in which heat is absorbed is called an endothermic reaction.
It causes a fall in temperature.
When nitrogen and oxygen are heated to a temperature of about 3000°C, nitric oxide gas is formed. This is an endothermic reaction.
Answered by Varsha | 8th Nov, 2017, 10:24: AM
- Liquid expands on
- Liquid expands on ___________.
- What is Endothermic changes ?
- Physical change is also said that no new substance is form but changing of ice into liquid is also new substance forming
- what is fusion
- why we can receive the physical changes
- Natural changes
- Classify the change of melting of gold ornaments
- Explain Desirable and Undesirable changes
- Explain Slow and Fast change
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