CBSE Class 10 Science Notes Chapter 2 Acids Bases and Salts Pdf free download is part of Class 10 Science Notes for Quick Revision. Nitric acid gives sodium nitrate, water and carbon dioxide gas when it reacts with sodium carbonate. (iii) Zinc chloride (ZnCl2) and Zinc sulphate (ZnSO4) belongs to the zinc family. Examples: Ammonium chloride is formed after reaction between hydrochloric acid (a strong acid) and ammonium hydroxide (a weak base). The most common characteristic is their sour taste. (iii) Neutralisation Reaction: An acid neutralizes a base when they react with each other and respective salt and water are formed. Examples: It is obtained by the electrolytic decomposition of solution of sodium chloride (brine). Red Cabbage: The juice of red cabbage is originally purple in colour. Chlorine gas is used in water treatment, manufacturing of PVC, disinfectants, CFC, pesticides. NCERT Book for Class 10 Science Chapter 2 Acids, Bases and Salts is available for reading or download on this page. CO2 causes bread and cake fluffy. Weak Acids: Acids which do not dissociate into ions completely are called weak acids. For example Ammonium sulphate, Ammonium chloride, etc. Acid,Bases and Salts. This chapter dives further concerning these three, as students have learned about them in brief earlier. Indicators: Indicators are substances which indicate the acidic or basic nature of the solution by their colour change. The revision notes covers all important formulas and concepts given in the chapter. Acid + Metal hydrogen carbonate → Salt + Carbon dioxide + Water Burning with pop sound is the characteristic test for hydrogen gas. Study Material and Notes of Ch 5 Acid, Bases and Salts Class 7th Science. Family of Salt: Salts having common acidic or basic radicals are said to belong to the same family. Sulphuric acid (H2SO4) neutral. It turns into the red with acid and turns into yellow with base. Carbonic acid (H2CO3) On the basis of chemical properties,all the compounds can be classified into three groups: 1)Acids. Acids, Bases and Salts Class 10 Noteswould fuel your exam preparation which ultimately lead you to score maximum marks in CBSE Board Exams. Acetic acid (CH3COOH) Since, the reaction between acid and base both neutralize each other, hence, it is also known as Neutralization Reaction. Nitric acid (HNO3) For Example, Sulphuric Acid, Hydrochloric Acid etc. Even if you wish to have an overview of a chapter, quick revision notes … Important chemical from sodium chloride The pH value of acidic salt is lower than 7. Class 10 Chemistry Notes - Chapter 10 - Acid Bases and Salts - Notes. (ii) Reaction of acids with metal carbonate: Acids give carbon dioxide gas and respective salts along with water when they react with metal carbonates. On the other hand you all know that increased amount of baking soda makes the cake taste bitter. Metal carbonate + Acid → Salt + Carbon dioxide + Water Types of bases: Bases can be divided in two types – Water soluble and Water-insoluble. Examples: Sodium hydroxide gives hydrogen gas and sodium zincate when reacts with zinc metal. Hydrochloric acid gives carbon dioxide gas, sodium chloride along with water when reacts with sodium carbonate. CHEMISTRY ACIDS, BASES & SALTS www.topperlearning.com 2 Acids, Bases & Salts Introduction Elements combine to form numerous compounds. Methyl orange is originally orange in colour. Prepare Class 10 Science Chapter 2 using simplified Notes with keywords and explanation. Examples: Sodium hydroxide (caustic soda) – NaOH It is also known as caustic soda. Phenolphthalein is a colourless liquid. Easy notes that contain overview, question answers and key points. Acids are sour in taste, turn blue litmus to red, dissolve in water to release H+ ions. Therefore, when a base reacts with non-metal oxide, both neutralize each other resulting respective salt and water. The water of Crystallization: Many salts contain water molecule and are known as Hydrated Salts. For more class 10 science notes visit class 10 notes science section. Examples: Curd, lemon juice, orange juice, vinegar etc. The term has been derived from the Latin word ‘acidus’ which means sour taste. Thus, acid or base is always added to water and water is never added to acid or base. When baking powder is heated, sodium hydrogen carbonate (NaHCO3) decomposes to give CO2 and sodium carbonate (Na2CO3). Turmeric solution: It is a yellow dye and in the acidic as well as neutral medium, its colour remains yellow. When copper sulphate is heated, it loses water molecules and turns: into grey – white colour, which is known as anhydrous copper sulphate. Litmus solution: It is a purple dye which is extracted from lichen, a plant belonging to the division. CBSE quick revision note for Class-10 Science, Chemistry, Maths, Biology and other subject are very helpful to revise the whole syllabus during exam days. Test For Evolution of Carbon Dioxide Gas: Carbon dioxide turns lime water milky when passed through it. Common in all bases: A base dissociates hydroxide ion in water, which is responsible for the basic behaviour of a compound. The water molecule present in salt is known as Water of crystallization. Sodium bicarbonate is white crystalline solid, but it appears as fine powder. Olfactory Indicators are used to ensure the participation of visually impaired students in the laboratory. This is the best natural example to prove that acids are sour in taste. 3. It is used to melt ice on hill stations and cold countries during heavy snow fall. pH = -log [H+] Chlorine in the bleaching powder is responsible for bleaching effect. Neutralisation Reaction: When an acid reacts with a base, the hydrogen ion of acid combines with the hydroxide ion of base and forms water. Register Online for Class 10 Science tuition on Vedantu.com to score more marks in your examination. Acidic salt: The pH value of an acidic salt is less than 7. In the process of electrolytic decomposition of brine (aqueous solution of sodium chloride), brine decomposes to form sodium hydroxide. Metal + Acid → Salt + Hydrogen Example: Acids, Bases and Salts. NCERT Class 10 Science Chapter 2 Acids, Bases and Salts Revision Notes contains very easy language which helps the students to study and revise syllabus with almost no time. Sodium hydroxide is used for making artificial textile fibres (such as rayon). When calcium hydroxide (slaked lime) reacts with chlorine, it gives calcium oxychloride (bleaching powder) and water is formed. Sulphuric acid gives sodium sulphate, Carbon dioxide gas and water when it reacts with sodium bicarbonate. Our notes of Chapter 5 Acids, Bases and Salts are prepared by Maths experts in an easy to remember format, covering all syllabus of CBSE, KVPY, NTSE, Olympiads, NCERT & other Competitive Exams. Examples: According to new CBSE Exam Pattern, MCQ Questions for Class 10 Science pdf Carries 20 Marks. NCERT Science Chapter 2 Acids, Bases and Salts Notes for Class 10 by Selfstudys are best notes because these are prepared by experienced staff members. You all know that lemon, tomato, oranges tastes sour. It is called Soda ash or Anhydrous sodium carbonate. Some common types of indicators are: 1. Acids: Substances which turn blue litmus solution red are called acids. Acids bases and salts class 10 notes. You also know that all of them contains citric acid. (ii) Tooth decay caused by acids: The bacteria present in our mouth converts the sugar into acids. Dilution of Acid and Base: The concentration of hydrogen ion in an acid and hydroxide ion in a base, per unit volume, shows the concentration of acid or base. These Study Notes are helpful for students aspiring for NTSE, Olympiad, KVPY, IIT JEE, Medical and other engineering and competitive exams. Sodium aluminate and hydrogen gas are formed when sodium hydroxide reacts with aluminium metal. It works because of oxidation. E.g. The two main sources of most of the chemical substances are: (1) Animals and plants (2) Minerals and rocks. For example; Phenolphthalein, methyl orange, etc. It is used in glass and paper industries. Compounds like sodium hydroxide (NaOH), baking soda (NaHCO. Base + Non-metal oxide → Salt + Water Excess acid in stomach causes acidity (indigestion). The solution of litmus is purple in colour. Hydrochloric acid (HCl) gives hydrogen ion (H+) and chloride ion (Cl–) when it is dissolved in water. If the gas bums with a pop sound, then it confirms the evolution of hydrogen gas. (iii) Reaction of acid with hydrogen carbonates (bicarbonates): Acids give carbon dioxide gas, respective salt and water when they react with metal hydrogen carbonate. Sodium acetate is formed after the reaction between a strong base, sodium hydroxide (a strong base) and acetic acid, (a weak acid). Your email address will not be published. – Neutralize solutions carrying hydroxide ions. Strong Acids Since there are 10 water molecules in washing soda, hence, it is known as Sodium Bicarbonate Decahydrate. • They turns blue litmus solution to red. Litmus, turmeric, red cabbage, China rose, etc., are some common natural indicators used widely to show the acidic or basic character of substances. Olfactory Indicator: Substances which change their smell when mixed with acid or base are known as Olfactory Indicators. Class 10 Science Chapter 2 Important Questions with Answers Acids, Bases and Salts. Turmeric does not change colour with acid. Given below are the notes and study material for this chemistry chapter. Turmeric is yellow in colour. Generally, tartaric acid is mixed with baking soda to make baking powder. The term acid is derived from a Latin word ‘acidus’ or ‘acere’, which means sour. In removing the permanent hardness of water. Vanilla: The smell of vanilla vanishes with base, but its smell does not vanish with an acid. Example citric acid, ascorbic acid, tartaric acid, lactic acid, acetic acid. HCl H + + Cl-. Properties of acids. For example, Hydrochloric acid (HCl), Sulphuric acid(H 2 SO 4), Nitric acid(HNO 3). Sodium chloride is used in the manufacturing of many chemicals. Acid + Base → Salt + Water This happens because of the formation of a white precipitate of calcium carbonate. Acids react with metal oxides to give salt and water. Acids and Bases; Indicators; Neutral Substances; Neutralisation; Acids and Bases Acids → Acids are sour in taste. Question 1. This process of addition of acid or base to water is called Dilution and the acid or base is called Diluted. – Sour taste. Examples: Sodium chloride and water are formed when hydrochloric acid reacts with sodium hydroxide (a strong base). Easy notes that contain review questions of the chapter. Based on their occurrence, they are divided into two types- Natural and mineral acids. Class 10 study notes for . Examples: - Hydrochloric acid (HCl), sulphuric acid (H 2 SO 4) , nitric acid (HNO 3), carbonic acid ( H 2 CO 3 ). When a strong base reacts with a weak acid, the acid is unable to fully neutralize the base. Baking soda is used in cleansing of ornaments made of silver. What do you understand in the chapter- Acids, Bases and Salts? (Metal oxides are basic in nature) Universal Indicator: Using a litmus paper, phenolphthalein, methyl orange, etc. This is possible only when you have the best CBSE Class 10 Science study material and a smart preparation plan. (iii) Basic Salts: Salts which are formed after the reaction between a weak acid and strong base are called Basic Salts. The pH value of sodium chloride is about 7. Sodium chloride is used to enhance the taste of food. On the basis of their chemical properties, compounds can be classified into three categories: Acids Bases Salts Acids and Bases in the Laboratory Indicators An indicator tells us whether a substance is acidic or basic in nature, by the change in colour. Washing Soda (Sodium Carbonate) Student of UP Board and MP Board also take the benefits of these notes, as they are using NCERT for the new academic session 2020-21. Here we have given NCERT Class 10 Science Notes Chapter 2 Acids Bases and Salts. CBSE Class-10 Revision Notes and Key Points. Salts: Salts are the ionic compounds which are produced after the neutralization reaction between acid and base. Types of Indicator: There are many types of indicators. Properties of Acids: Types of Acids: Acids are divided into two types on the basis of their occurrence i.e., Natural acids and Mineral acids. The pH of a solution is defined as the negative logarithm of hydrogen ion concentration in moles per litre. An indicator tells us whether a given substance is an acid or a base by change in its colour. Sodium carbonate formed after thermal decomposition of sodium hydrogen carbonate decomposes into sodium oxide and carbon dioxide on further heating. In mineral acid, such as hydrochloric acid, sulphuric acid, nitric acid, etc. For acidic solutions : pH < 7 Sodium hydroxide gives sodium carbonate and water when it reacts with carbon dioxide. Acid-Base indicator: Natural/synthetic materials which indicate the presence of acid or base in a solution, are called acid base indicator or simply indicator. To assist you with that, we are here with notes. It remains colourless with acid but turns into pink with a base. An acid turns blue litmus paper red. Organic Acids: Acids which are obtained from plants and animals are called organic acids. (i) pH in our digestive system: Dilute HCl (Hydrochloric acid) helps in digestion of food (proteins) in our stomach. (i) Sodium chloride (NaCl) and Calcium chloride (CaCl2) belongs to chloride family. The pre foundation courses offered by us are prepared by best faculties from all over India. Weak Acids: Acids which do not dissociate into ions completely are called weak acids E.g.. CH3COOH, Oxalic acid, Lactic acid. Acid: A substance that releases H + ion in aqueous medium. There are number of salts but sodium chloride is the most common among them. A base turns red litmus paper blue. Notes Chapter - 2 Acids, Bases and Salts ACIDS: • These are the substances which have sour in taste. Calcium hydroxide gives calcium carbonate and water when it reacts with carbon dioxide. are called mineral acids, example, H2SO4 (Sulphuric acid), HNO3 (Nitric acid) and HCl (Hydrochloric acid). 2)Bases. These will help you through the preparation of tests, assessments and examinations. 2. In this process, chlorine is obtained at anode and hydrogen gas is obtained at cathode as by products. Strong Acids: Acids which dissociate into ions completely are called strong acids. This is the characteristic test for carbon dioxide gas. For example; carbon dioxide is a non-metal oxide. Use of products after the electrolysis of brine: 2. Similarly, bases in which complete dissociation of hydroxide ion takes place are called Strong Bases. (ii) Calcium chloride (CaCl2) and Calcium sulphate (CaSO4) belongs to calcium family. According to new CBSE Exam Pattern, MCQ Questions for Class 10 Science pdf Carries 20 Marks. Phosphoric acid (H3PO4) etc. Hydrogen gas and zinc chloride are formed when hydrochloric acid reacts with zinc metal. This happens because of formation of calcium hydrogen carbonate. NCERT CBSE Notes For Class 10 Science Chemistry Chapter 2 Acids, Bases and Salts Download in pdf Properties of Acids: – Produce hydrogen ions [H +] in H 2 O. Sulphuric acid gives calcium sulphate, carbon dioxide gas, calcium sulphate and water when it reacts with calcium carbonate As calcium hydrogen carbonate is soluble in water, thus, the milky colour of solution mixture disappears. Acids react with bases to give salt and water. Bleaching powder is used for bleaching of cotton in textile industry, bleaching of wood pulp in paper industry. Example: Sulphuric acid (H2SO4), Acetic Acid (CH3COOH), Nitric Acid (HNO3) etc. pH value shown by different colours role of pH everyday life: Litmus paper comes in two colours- blue and red. • … Due to this, a neutral salt is formed. Universal Indicator: A universal indicator is a mixture of indicators which shows a gradual but well-marked series of colour changes over a very wide range of change in concentration of H+ ions. It is because H+ is unstable. Similarly, when potassium hydroxide is dissolved in water, it dissociates hydroxide ion and potassium ion. Hope these notes will … When a concentrated solution of acid is diluted by mixing water, then the concentration of Hydrogen ions (H+) or hydronium ion (H3O–) per unit volume decreases. Alkali + Metal → Salt + Hydrogen Neutral, Acidic and Basic Salts: pH Scale: A scale for measuring hydrogen ion concentration in a solution. It is used as a cleaning agent for domestic purposes. 3. Digital NCERT Books Class 10 Science pdf are always handy to use when you do not have access to physical copy. Thermal decomposition of sodium hydrogen carbonate (baking soda). – Turn blue litmus red. a) Acid is sour in taste. They are bitter in taste. Bleaching powder is used as oxidizing agent in many industries, such as textiles industry, paper industry, etc. The pH value of such salts is equal to 7, i.e. Bases - Bases are compounds which give hydroxide ion in water solution. Aqueous solution of bleaching powder is basic in nature. Students who are in Class 10 or preparing for any exam which is based on Class 10 Science can refer NCERT Book for their preparation. Acids, Bases and Salts Notes of CBSE Class 10 Science Chapter with detailed explanation of the chapter ‘Acids, bases and salts' along with meanings of difficult words. Because of the dissociation of hydrogen ion in aqueous solution, an acid shows acidic behaviour. An acid which is completely ionised in water and produces (H+) is called Strong Acid. Example : Sodium chloride, Sodium sulphate. Salts are electrically neutral. Phenolphthalein: It is a colourless organic dye in acidic or neutral medium but it changes to pink in basic medium. Methanoic acid (HCOOH) Therefore. are some other names of baking soda. Washing soda is obtained by rehydration of anhydrous sodium carbonate. Solution of the salts conducts electricity in their molten state also. Example, H2SO4, HCl. Bases: Bases are bitter in taste, have soapy touch, turn red litmus blue and give hydroxide ions (OH–) in aqueous solution. Examples: Acids are sour in taste. For water or neutral solutions : pH = 7 → Acids are sour in taste and change the colour of blue litmus to red. Concentrated Acid : Having more amount of acid + less amount of … Although, baking soda also produces carbon dioxide on heating, but it is not used in cooking because on heating, baking soda produces sodium carbonate along with carbon dioxide. : carbon dioxide and sodium carbonate, sodium bicarb, etc be,. Byproducts of Chlor – alkali process used the preparation of tests, and. Called mineral Acids metal + acid → salt + hydrogen examples: Curd, lemon juice, juice. 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