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Here we discuss about chemical reaction definition, chemical reaction equation and example of chemical reaction and determining a chemical reaction that it has been taken place.

Notes ⇒ Class 10th ⇒ Science ⇒ 1. Chemical Reactions and Equations

Notes 1. Chemical Reactions and Equations - Chemical Reaction | Class 10 Science - Toppers Study

Topper Study classes prepares CBSE Notes on practical base problems and comes out with the best result that helps the students and teachers as well as tutors and so many ecademic coaching classes that they need in practical life. Here we discuss about chemical reaction definition, chemical reaction equation and example of chemical reaction and determining a chemical reaction that it has been taken place.

Notes 1. Chemical Reactions and Equations - Chemical Reaction | Class 10 Science - Toppers Study

CBSE board students who preparing for class 10 ncert solutions maths and Science solved exercise chapter 1. Chemical Reactions and Equations available and this helps in upcoming exams 2023-2024.

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Chapter 1 Science class 10

Chemical Reaction class 10 Science Chapter 1. Chemical Reactions and Equations

Sure! The following topics will be covered in this article

  • What Is Chemical Reaction
  • What Is Chemical Equation
  • Chemical Reaction Definition
  • Determining Chemical Reaction
  • Chemical Reaction Example
  • Chemical Equation Example
  • What Is Reactant
  • What Is Production
  • Definition Of Reactant
  • Definition Of Product

1. Chemical Reactions and Equations

| Chemical Reaction |

Notes 1. Chemical Reactions and Equations - Chemical Reaction | Class 10 Science - Toppers Study


Chemistry:

The theoretical and experimental study of nature, composition, preparation, isolation, properties and uses of matter is known as Chemistry.

Definition of Chemical Reaction:

What is Chemical Reaction?

Such a process in which there produces substances of new property is known as chemical reaction. 

Example of chemical reaction: 

2H2 + O2 → 2H2O

(Here H2 and O2 take part in chemical reaction and produce a product of new property i.e. H2O.)

In other hand, we can also say that Chemical changes are also known as chemical reaction. There are many chemical changes which occur around us.

Like,

  • Iron rod comes in contact of moisture and gets rusted.
  • Grapes get fermented.
  • Food is cooked.
  • Food gets digested in our body.
  • We respire.

What happens when magnesium ribbon is bunt in air? 

Magnesium ribbon burns with a dazzling white flame and changes into a white powder. This powder is magnesium oxide. It is formed due to the reaction between magnesium and oxygen present in the air.

Determination of Chemical Reaction:

We should have a criteria to determine the chemical reaction has taken place.

e.i

  • change in state
  • change in colour
  • evolution of a gas
  • Change in temperature.

Above four points are identifications of chemical reaction which indicate that the reaction has taken place.

What is Chemical Equation?

when a magnesium ribbon is burnt in oxygen, it gets converted to magnesium oxide. This is the statement form of a chemical reaction but it can be write as a following manners

Magnesium + Oxygen → magnesium oxide

(Reactants)                 (product)

To write the equation in such manner is called as word equation.

Another method to write chemical reaction;

Mg + O2 → MgO

This is symbolic form to write chemical equations. 

Parts of Chemical Equation/Reaction:

There are two part of a chemical reaction

1. Reactants: The substances that undergo chemical change in the reaction  are the reactants. Example from above equation. Mg and O are reactants.

In above example Mg and O2 are reactants 

2. Procducts: The new substance,  formed during the reaction, is the product. Ex. MgO is product, which newer substance produced in reaction. 

In above example MgO is product. 

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Study Materials List:

Notes ⇒ Class 10th ⇒ Science
1. Chemical Reactions and Equations
2. Acids, Bases and Salts
3. Metals and Non-metals
4. Carbon and its Compounds
5. Periodic Classification of Elements
6. Life Processes
7. Control and Coordination
8. How do Organisms Reproduce
9. Heredity and Evolution
10. Light-Reflection and Refraction
11. Human Eye and Colourful World
12. Electricity
13. Magnetic Effects of Electric Current
14. Sources of Energy
15. Our Environment
16. Management of Natural Resources

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