chemical_reaction_types_grade_10

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Types of Chemical Reactions

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Lesson Objectives classify the chemical reaction identify the type of chemical reaction After completing this lesson you will be able to After completing this lesson you will be able to classify the chemical reaction and identify the type of chemical reaction.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry In a chemical reaction , a reactant and a reagent combine and form a new product and a by-product. Reactant + Reagent  Product + By-product

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CBSE - 10 Chemistry Let us watch this reaction. Chemical Reactions and Equations Types of Chemical Reactions

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CBSE - 10 Chemistry Magnesium ribbon burns in air to become magnesium oxide. Magnesium Magnesium oxide Chemical Reactions and Equations Types of Chemical Reactions

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry We can classify reactions into combination reaction, displacement reaction, decomposition reaction, double displacement reaction, neutralisation reaction, red-ox reactions, thermal dissociation reaction and irreversible and irreversible reactions.

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CBSE - 10 Chemistry In this simple combination reaction, magnesium combines with oxygen to form magnesium oxide. Magnesium ribbon Magnesium oxide powder Chemical Reactions and Equations Types of Chemical Reactions Combination Reaction

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CBSE - 10 Chemistry View answer Click the view answer button to find out the product. Chemical Reactions and Equations Types of Chemical Reactions Interactivity

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Sodium chloride Heat Sodium and chlorine combine on heating to form sodium chloride. Sodium metal Chlorine gas

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Sulphur combines with iron on heating to give iron sulphide. Iron Iron powder Sulphur powder Mixing iron and sulphur Iron sulphide powder

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Let us see some more examples of combination reaction. Nitrogen combines with hydrogen and gives ammonia on heating. Similarly sulphur combines with oxygen to form sulphur dioxide. Heat

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry View answer Click on the view answer button to find out the product. Interactivity

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Hydrogen and chlorine combine to form hydrogen chloride.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry We can classify displacement reactions further into metal-metal displacement and metal-nonmetal displacement reactions. Displacement Reaction

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry According to reactivity series the most reactive metals replace the less reactive metals. Metal – Metal Displacement

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Interactivity View answer Click the view answer button to find out the product.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Silver and copper nitrate solution Silver nitrate solution Copper coil Since copper is more reactive than silver copper replaces silver in this reaction.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Sometimes, a metal displaces a non-metal. Different metals have different reactivities with various non-metals such as oxygen and hydrogen. For example, sodium reacts violently with water, even at room temperature to replace hydrogen, the non-metal. Reaction of sodium with water Metal – Non-metal Displacement

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Hydrogen in water is replaced by magnesium only on heating. Heat Magnesium oxide Magnesium powder

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Copper does not react with water. Sodium is more reactive with water. Thus we can predict the non-metal displacement by the order of reactivity. Reaction of sodium with water

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry View answer Red hot Interactivity Click the view answer button to find out the products.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Red hot Iron replaces hydrogen from water.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry When a single compound breaks up into two or many simpler substances it is called decomposition reaction. Decomposition Reaction

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry When we heat lead nitrate it becomes lead oxide with the evolution of oxygen gas and brown fumes of nitrogen dioxide. Heat Brown fumes of nitrogen dioxide

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Watch this experiment and answer the question. View answer Interactivity

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Two compounds react to form different compounds by mutual exchange of ions or atoms in a double displacement reaction. Double Displacement Reaction

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry When silver nitrate reacts with potassium chloride, it gives silver chloride and potassium nitrate. Silver nitrate solution (Colourless) Silver chloride solution (Curdy white precipitate)

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Interactivity View answer Click the view answer button to find out the product.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Neutralisation is also an example of double displacement reaction. Acid reacts with base to form salt and water. Neutralisation Reaction

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Equimolar mixture of sodium hydroxide and hydrochloric acid result neutralisation mixture, containing sodium chloride salt and water . Colourless neturalisation mixture Pale pink colour of neutralisation mixture with slight excess of NaOH Did you know? When we add a few drops of phenolphthalein indicator in a neutralisation mixture with a slight excess of alkali it gives pale pink colour. Neutralisation

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry View answer Interactivity Click the view answer button to find out the product.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Calcium hydroxide Calcium sulphate Sulphuric acid Calcium hydroxide reacts with sulphuric acid to form calcium sulphate and water.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Combustion of gasoline, burning of wood and burning of food in our body are examples of oxidation. Oxidation - Reduction

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry An oxidation reaction occurs as a result of either the addition of oxygen or the removal of hydrogen. A reduction reaction occurs by either the removal of oxygen or the addition of hydrogen.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Oxidation and reduction occur simultaneously in a reaction: hence it is called redox reaction.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Zinc oxide undergoes reduction by losing oxygen to become zinc, and carbon undergoes oxidation by gaining oxygen, to become carbon monoxide. Zinc oxide Calcium hydroxide Carbon

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry View answer Interactivity Click the view answer button to find out the product.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry A compound is dissociated into simple compounds on heating. Since this dissociation takes place due to heating it is called ‘thermal dissociation’. Thermal Dissociation

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Hydrogen peroxide dissociates on heating, to give water and oxygen, in the presence of manganese oxide. Heat MnO2 Hydrogen peroxide Water Oxygen

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry View answer Interactivity Click the view answer button to find out the product.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Heat Ammonia dissociates into nitrogen and hydrogen in the presence of tungsten.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry You can compare reversible and irreversible reactions as shown in the table. Next Reversible and Irreversible Reactions

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Thermal decomposition of phosphorus pentachloride into phosphorus trichloride and chlorine is a good example of a reversible reaction. Phosphorus pentachloride Phosphorus trichloride

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Phosphorus pentachloride dissociates into phosphorus trichloride and chlorine in the forward reaction

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Phosphorus trichloride and chlorine combine with each other to become phosphorus pentachloride in the backward reaction.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Neutralisation between a strong acid and strong base is an irreversible reaction, with the evolution of heat.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Match the type of reaction View answer Interactivity Click the view answer button to find out the product.

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry

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CBSE - 10 Chemical Reactions and Equations Types of Chemical Reactions Chemistry Combination Decomposition Displacement Double displacement Thermal dissociation Redox Neutralisation Types of Reaction In this lesson you have learnt different types of chemical reactions such as combination , decomposition, thermal dissociation, redox, neutralisation, displacement, double displacement , reversible and irreversible reactions. Reversible & Irreversible Summary