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What does one mean by exothermic and endothermic reactions? Gi
Science
Science

Class 10

NCERT

Publisher:
NCERT
Subject:
Science
1

Chapter 1: Chemical Reactions and Equations

34 questions

Q1
Write the balanced chemical equation for the following and identify the type of reaction in each case:

(a) Potassium bromide(aq) + Barium iodide(aq) Potassium iodide(aq) + Barium bromide(s)

(b) Zinc carbonate(s) Zinc oxide(s) + Carbon dioxide(g)

(c) Hydrogen(g) + Chlorine(g) Hydrogen chloride(g)

(d) Magnesium(s) + Hydrochloric acid(aq) Magnesium chloride(aq) + Hydrogen(g)
Q2
What does one mean by exothermic and endothermic reactions? Give examples.
Q3
Why is respiration considered an exothermic reaction? Explain.
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2

Chapter 2: Acid,Bases and Salts

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3

Chapter 3: Metals and Non-metals

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4

Chapter 4: Carbon and its Compound

24 questions

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5

Chapter 5: Periodic Classification of Elements

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6

Chapter 6: Life Processes

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7

Chapter 7: Control and Coordination

12 questions

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8

Chapter 8: How do Organism Reproduce?

11 questions

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9

Chapter 9: Heredity and Evolution

12 questions

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10

Chapter 10: Light -Reflection and Refraction

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11

Chapter 11: The Human Eye and Colourful World

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12

Chapter 12: Electricity

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13

Chapter 13: Magnetic Effects of Electric Current

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14

Chapter 14: Sources of Energy

24 questions

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15

Chapter 15: Our Environment

9 questions

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16

Chapter 16: Sustainable Management of Natural Resources

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Question
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Solving time: 3 mins

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

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Updated on: Aug 4, 2023

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What does one mean by exothermic and endothermic reactions? Give examples.
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Text SolutionText solutionverified iconVerified

The chemical reactions release energy in the form of heat, light, or sound, are called exothermic reactions. An exothermic reaction occurs when the temperature of a system increases due to the evolution of heat. This heat is released into the surroundings, resulting in an overall negative quantity for the heat of reaction.
An example of an exothermic reaction is the mixture of sodium and chlorine to yield table salt. This reaction produces of energy for each mole of salt that is produced:



The chemical reactions that must absorb energy in order to proceed are known as endothermic reactions.  An endothermic reaction occurs when the temperature of an isolated system decreases while the surroundings of a non-isolated system gain heat. Endothermic reactions result in an overall positive heat of reaction.

Photosynthesis is an example of an endothermic chemical reaction. In this process, plants use the energy from the sun to convert carbon dioxide and water into glucose and oxygen.
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Write the balanced chemical equation for the following and identify the type of reaction in each case:

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What does one mean by exothermic and endothermic reactions? Give examples.
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Why is respiration considered an exothermic reaction? Explain.
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Question Text
What does one mean by exothermic and endothermic reactions? Give examples.
Updated OnAug 4, 2023
TopicChemical Reactions and Equations
SubjectScience
ClassClass 10
Answer TypeText solution:1 Video solution: 4
Upvotes556
Avg. Video Duration5 min