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What does one mean by exothermic and end...

What does one mean by exothermic and endothermic reactions? Give examples

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Exothermic reaction: In exothermic reaction, heat is evolved during the reaction which is indicated by .+ heat sign on the right hand side of the equation.
For example:
`CaO(s)+H_(2)O(l)rarrCa(OH)_(2)(aq)+"Heat"`
Endothermic reaction: In this reaction, heat is absorbed which is indicated by putting .+ heat. sign on the left hand side of the equation.
For example:
`N_(2)(g)+O_(2)(g)+"Heat"rarr2NO(g)`
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(a) What do you understned by exothermic and endothermic reactions ? (b) Give one example of an exothermic reaction and one of an endothermic reaction. (c ) Which of the following are endothermic reactions and which are exothermic reactions ? {:((i),"Burning of natural gas",(ii),"Photosynthesis"),((iii),"Electrolysis of water",(iv),"Respiration"),((v),"Decomposition of calcium carbonate",,):}

Define an exothermic reaction. Give an example.

What do you undestand by exothermic reaction and endothermic reaction? Give one example of each type.

What do you understand by exothermic and endothermic reactions ? Describe an exothermic reaction.

Exothermic reaction and Endothermic reaction :

VK GLOBAL PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-NCERT EXERCISES
  1. Which of the statements about the reaction below are incorrect? 2PbO...

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  2. Fe(2)O(3) + 2Al rarr Al(2)O(3) + 2Fe The above reaction is an exampl...

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  3. What happens when dilute hydrochloric acid is added to iron filings? C...

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  4. What is a balanced chemical equation? Why should chemical equations be...

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  5. Translate the following statements into chemical equations and then ba...

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  6. Balance the following chemical equations: (a) HNO(3)+Ca(OH)(2)toCa(...

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  7. Write the balanced chemical equations for the following reactions: (...

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  8. Write the balanced chemical equation for the following and identify th...

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  9. What does one mean by exothermic and endothermic reactions? Give examp...

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  10. Why is respiration considered an exothermic reaction? Explain.

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  11. Why are decomposition reactions called the opposite of combination rea...

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  12. Write one equation each for decomposition reactions where energy is su...

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  13. What is the difference between displacement and double displacement re...

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  14. In the refining of silver, the recovery of silver from silver nitrate ...

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  15. What do you mean by a precipitation reaction? Explain by giving exampl...

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  16. Explain the following in terms of gain or loss of oxygen with two exam...

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  17. A shiny brown coloured element ‘X’ on heating in air becomes black in ...

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  18. Why do we apply paint on iron articles?

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  19. Oil and fat containing food items are flushed with nitrogen. Why?

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  20. Explain the following terms with one example each: (a) Corrosion (b)...

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