CBSE Class 9 > Class 9 Notes > Science > Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?
Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?
| Download, print and study this document offline |
Please wait while the PDF view is loading
Page 1 2. Is Matt er Ar ound us Pur e V e r y S h o r t A n s w e r T y p e Q u e s t i o n s - P g - 5 6 1 . Q u e s t i o n State whether the following statement is true or false: Milk is a pure substance. A n s w e r False, 2 . Q u e s t i o n Name three mixtures found in nature. A n s w e r (i) Milk (ii) Mixture of different colours - Paint (iii) Mixture of different gases-Air. 3 . Q u e s t i o n Which of the following is a mixture? Salt, Air, Water, Alum, Sugar A n s w e r Air is made of different gases. Hence air is a mixture of gases. 4 . Q u e s t i o n Name one metal and one non-metal which exist as liquids at room temperature. A n s w e r Metal - Mercury exists as liquid at room temperature. Non-metal - bromine exists as liquid at room temperature. 5 . Q u e s t i o n Page 2 2. Is Matt er Ar ound us Pur e V e r y S h o r t A n s w e r T y p e Q u e s t i o n s - P g - 5 6 1 . Q u e s t i o n State whether the following statement is true or false: Milk is a pure substance. A n s w e r False, 2 . Q u e s t i o n Name three mixtures found in nature. A n s w e r (i) Milk (ii) Mixture of different colours - Paint (iii) Mixture of different gases-Air. 3 . Q u e s t i o n Which of the following is a mixture? Salt, Air, Water, Alum, Sugar A n s w e r Air is made of different gases. Hence air is a mixture of gases. 4 . Q u e s t i o n Name one metal and one non-metal which exist as liquids at room temperature. A n s w e r Metal - Mercury exists as liquid at room temperature. Non-metal - bromine exists as liquid at room temperature. 5 . Q u e s t i o n Name a metal which is soft and a non-metal which is hard. A n s w e r Soft Metal - Sodium. Hard non-metal - Diamond. 6 . Q u e s t i o n Name a non-metal which is a good conductor of electricity. A n s w e r Diamond is a non-metal which is a good conductor of electricity. 7 . Q u e s t i o n Name a liquid which can be classi ied as a pure substance and conducts electricity. A n s w e r Mercury is a pure substance (non-metal) and conducts electricity. 8 . Q u e s t i o n Name one solid, one liquid and one gaseous non-metal. A n s w e r Solid non-metal Liquid non-metal - Bromine Gaseous non-metal - Hydrogen 9 . Q u e s t i o n Name the property: (a) Which allows metals to be hammered into thin sheets. (b) Which enables metals to be drawn into wires. A n s w e r (a) Malleability is the property which allows metals to be hammered into thin sheets. For example- Aluminum. (b) Ductibility is the property which allows metals to be drawn into wires. For example - Copper. 1 0 . Q u e s t i o n Page 3 2. Is Matt er Ar ound us Pur e V e r y S h o r t A n s w e r T y p e Q u e s t i o n s - P g - 5 6 1 . Q u e s t i o n State whether the following statement is true or false: Milk is a pure substance. A n s w e r False, 2 . Q u e s t i o n Name three mixtures found in nature. A n s w e r (i) Milk (ii) Mixture of different colours - Paint (iii) Mixture of different gases-Air. 3 . Q u e s t i o n Which of the following is a mixture? Salt, Air, Water, Alum, Sugar A n s w e r Air is made of different gases. Hence air is a mixture of gases. 4 . Q u e s t i o n Name one metal and one non-metal which exist as liquids at room temperature. A n s w e r Metal - Mercury exists as liquid at room temperature. Non-metal - bromine exists as liquid at room temperature. 5 . Q u e s t i o n Name a metal which is soft and a non-metal which is hard. A n s w e r Soft Metal - Sodium. Hard non-metal - Diamond. 6 . Q u e s t i o n Name a non-metal which is a good conductor of electricity. A n s w e r Diamond is a non-metal which is a good conductor of electricity. 7 . Q u e s t i o n Name a liquid which can be classi ied as a pure substance and conducts electricity. A n s w e r Mercury is a pure substance (non-metal) and conducts electricity. 8 . Q u e s t i o n Name one solid, one liquid and one gaseous non-metal. A n s w e r Solid non-metal Liquid non-metal - Bromine Gaseous non-metal - Hydrogen 9 . Q u e s t i o n Name the property: (a) Which allows metals to be hammered into thin sheets. (b) Which enables metals to be drawn into wires. A n s w e r (a) Malleability is the property which allows metals to be hammered into thin sheets. For example- Aluminum. (b) Ductibility is the property which allows metals to be drawn into wires. For example - Copper. 1 0 . Q u e s t i o n Which type of elements, metals or non-metal show the property of brittleness? A n s w e r Non-metals show the property of brittleness. A material is brittle if, when subjected to stress, it breaks without signi icant plastic deformation. 1 1 . Q u e s t i o n What is meant by saying that metals are malleable and ductile? A n s w e r Malleable metals, like copper and nickel, are able to be stretched out into thin wires. This is known as Malleability. Copper, nickel and tin are a few metals that are able to be pounded into thin sheets and able to be made into thin wires. This is known as Ductility. When atoms move in different ways and can be pounded or stretched, they are both malleable and ductile. 1 2 . Q u e s t i o n What is meant by saying that non-metals are brittle? A n s w e r Non-metals show the property of brittleness. A material is brittle if, when subjected to stress, it breaks without signi icant plastic deformation. 1 3 . Q u e s t i o n What is meant by saying that metals are sonorous? A n s w e r Metals produce ringing sound when beaten, i.e. metals are sonorous. This is the reason that bells are made of metal. 1 4 . Q u e s t i o n What is meant by saying that metals are lustrous? A n s w e r Metals are lustrous because of the presence of free electrons. ... These electrons can freely move about the surface of metal and are therefore called mobile electrons. Because of these mobile electrons, light falling on the surface of a metal is not transmitted but is re lected, and hence the metals appear lustrous. 1 5 . Q u e s t i o n Page 4 2. Is Matt er Ar ound us Pur e V e r y S h o r t A n s w e r T y p e Q u e s t i o n s - P g - 5 6 1 . Q u e s t i o n State whether the following statement is true or false: Milk is a pure substance. A n s w e r False, 2 . Q u e s t i o n Name three mixtures found in nature. A n s w e r (i) Milk (ii) Mixture of different colours - Paint (iii) Mixture of different gases-Air. 3 . Q u e s t i o n Which of the following is a mixture? Salt, Air, Water, Alum, Sugar A n s w e r Air is made of different gases. Hence air is a mixture of gases. 4 . Q u e s t i o n Name one metal and one non-metal which exist as liquids at room temperature. A n s w e r Metal - Mercury exists as liquid at room temperature. Non-metal - bromine exists as liquid at room temperature. 5 . Q u e s t i o n Name a metal which is soft and a non-metal which is hard. A n s w e r Soft Metal - Sodium. Hard non-metal - Diamond. 6 . Q u e s t i o n Name a non-metal which is a good conductor of electricity. A n s w e r Diamond is a non-metal which is a good conductor of electricity. 7 . Q u e s t i o n Name a liquid which can be classi ied as a pure substance and conducts electricity. A n s w e r Mercury is a pure substance (non-metal) and conducts electricity. 8 . Q u e s t i o n Name one solid, one liquid and one gaseous non-metal. A n s w e r Solid non-metal Liquid non-metal - Bromine Gaseous non-metal - Hydrogen 9 . Q u e s t i o n Name the property: (a) Which allows metals to be hammered into thin sheets. (b) Which enables metals to be drawn into wires. A n s w e r (a) Malleability is the property which allows metals to be hammered into thin sheets. For example- Aluminum. (b) Ductibility is the property which allows metals to be drawn into wires. For example - Copper. 1 0 . Q u e s t i o n Which type of elements, metals or non-metal show the property of brittleness? A n s w e r Non-metals show the property of brittleness. A material is brittle if, when subjected to stress, it breaks without signi icant plastic deformation. 1 1 . Q u e s t i o n What is meant by saying that metals are malleable and ductile? A n s w e r Malleable metals, like copper and nickel, are able to be stretched out into thin wires. This is known as Malleability. Copper, nickel and tin are a few metals that are able to be pounded into thin sheets and able to be made into thin wires. This is known as Ductility. When atoms move in different ways and can be pounded or stretched, they are both malleable and ductile. 1 2 . Q u e s t i o n What is meant by saying that non-metals are brittle? A n s w e r Non-metals show the property of brittleness. A material is brittle if, when subjected to stress, it breaks without signi icant plastic deformation. 1 3 . Q u e s t i o n What is meant by saying that metals are sonorous? A n s w e r Metals produce ringing sound when beaten, i.e. metals are sonorous. This is the reason that bells are made of metal. 1 4 . Q u e s t i o n What is meant by saying that metals are lustrous? A n s w e r Metals are lustrous because of the presence of free electrons. ... These electrons can freely move about the surface of metal and are therefore called mobile electrons. Because of these mobile electrons, light falling on the surface of a metal is not transmitted but is re lected, and hence the metals appear lustrous. 1 5 . Q u e s t i o n What is the general name of the materials which contain at least two pure substances and show the properties of their constituents? A n s w e r Substances which are made of two or more materials and which can be separated by physical methods are known as mixtures, such as mixture of salt and water, mixture of sugar and water, mixture of different gases, air, etc. In a mixture, components do not combine chemically or through any chemical change. In a mixture, components do not lose their properties. 1 6 . Q u e s t i o n “The properties of the product are different from those of the constituents” . State whether this statement best describes an element, a compound or a mixture. A n s w e r The properties of a compound are entirely different from those of its constituents. Hence above statement describes a compound. 1 7 . Q u e s t i o n Name one element, one compound and one mixture. A n s w e r Element- Nitrogen Compound- Water Mixture- Air 1 8 . Q u e s t i o n What is the major difference between a solution and an ordinary mixture? A n s w e r Mixture of two or more substances with one phase only, i.e. having no distinct boundary of constituent particles are called solution. For example, solution of sugar and water, solution of salt and water, lemonade, soft drinks, etc. Solution is a homogeneous mixture of two or more substances an ordinary mixture is made up of two or more matters and which can be separated by physical methods, such as mixture of different gases, air. In a mixture, components do not combine chemically or through any chemical change. 1 9 . Q u e s t i o n What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur? Page 5 2. Is Matt er Ar ound us Pur e V e r y S h o r t A n s w e r T y p e Q u e s t i o n s - P g - 5 6 1 . Q u e s t i o n State whether the following statement is true or false: Milk is a pure substance. A n s w e r False, 2 . Q u e s t i o n Name three mixtures found in nature. A n s w e r (i) Milk (ii) Mixture of different colours - Paint (iii) Mixture of different gases-Air. 3 . Q u e s t i o n Which of the following is a mixture? Salt, Air, Water, Alum, Sugar A n s w e r Air is made of different gases. Hence air is a mixture of gases. 4 . Q u e s t i o n Name one metal and one non-metal which exist as liquids at room temperature. A n s w e r Metal - Mercury exists as liquid at room temperature. Non-metal - bromine exists as liquid at room temperature. 5 . Q u e s t i o n Name a metal which is soft and a non-metal which is hard. A n s w e r Soft Metal - Sodium. Hard non-metal - Diamond. 6 . Q u e s t i o n Name a non-metal which is a good conductor of electricity. A n s w e r Diamond is a non-metal which is a good conductor of electricity. 7 . Q u e s t i o n Name a liquid which can be classi ied as a pure substance and conducts electricity. A n s w e r Mercury is a pure substance (non-metal) and conducts electricity. 8 . Q u e s t i o n Name one solid, one liquid and one gaseous non-metal. A n s w e r Solid non-metal Liquid non-metal - Bromine Gaseous non-metal - Hydrogen 9 . Q u e s t i o n Name the property: (a) Which allows metals to be hammered into thin sheets. (b) Which enables metals to be drawn into wires. A n s w e r (a) Malleability is the property which allows metals to be hammered into thin sheets. For example- Aluminum. (b) Ductibility is the property which allows metals to be drawn into wires. For example - Copper. 1 0 . Q u e s t i o n Which type of elements, metals or non-metal show the property of brittleness? A n s w e r Non-metals show the property of brittleness. A material is brittle if, when subjected to stress, it breaks without signi icant plastic deformation. 1 1 . Q u e s t i o n What is meant by saying that metals are malleable and ductile? A n s w e r Malleable metals, like copper and nickel, are able to be stretched out into thin wires. This is known as Malleability. Copper, nickel and tin are a few metals that are able to be pounded into thin sheets and able to be made into thin wires. This is known as Ductility. When atoms move in different ways and can be pounded or stretched, they are both malleable and ductile. 1 2 . Q u e s t i o n What is meant by saying that non-metals are brittle? A n s w e r Non-metals show the property of brittleness. A material is brittle if, when subjected to stress, it breaks without signi icant plastic deformation. 1 3 . Q u e s t i o n What is meant by saying that metals are sonorous? A n s w e r Metals produce ringing sound when beaten, i.e. metals are sonorous. This is the reason that bells are made of metal. 1 4 . Q u e s t i o n What is meant by saying that metals are lustrous? A n s w e r Metals are lustrous because of the presence of free electrons. ... These electrons can freely move about the surface of metal and are therefore called mobile electrons. Because of these mobile electrons, light falling on the surface of a metal is not transmitted but is re lected, and hence the metals appear lustrous. 1 5 . Q u e s t i o n What is the general name of the materials which contain at least two pure substances and show the properties of their constituents? A n s w e r Substances which are made of two or more materials and which can be separated by physical methods are known as mixtures, such as mixture of salt and water, mixture of sugar and water, mixture of different gases, air, etc. In a mixture, components do not combine chemically or through any chemical change. In a mixture, components do not lose their properties. 1 6 . Q u e s t i o n “The properties of the product are different from those of the constituents” . State whether this statement best describes an element, a compound or a mixture. A n s w e r The properties of a compound are entirely different from those of its constituents. Hence above statement describes a compound. 1 7 . Q u e s t i o n Name one element, one compound and one mixture. A n s w e r Element- Nitrogen Compound- Water Mixture- Air 1 8 . Q u e s t i o n What is the major difference between a solution and an ordinary mixture? A n s w e r Mixture of two or more substances with one phase only, i.e. having no distinct boundary of constituent particles are called solution. For example, solution of sugar and water, solution of salt and water, lemonade, soft drinks, etc. Solution is a homogeneous mixture of two or more substances an ordinary mixture is made up of two or more matters and which can be separated by physical methods, such as mixture of different gases, air. In a mixture, components do not combine chemically or through any chemical change. 1 9 . Q u e s t i o n What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur? A n s w e r Some element have intermediate properties of the metals and non-metals. The elements which exhibit the properties of metals as well as non-metals, are called metalloids. Example: Boron, Silicon, Germanium etc. 2 0 . Q u e s t i o n Fill in the following blanks with suitable words: (a) An element is made up of only one kind of …………. (b) Brine is a ………… whereas alcohol is a …………. (c) Brass is an alloy which is considered a …………. (d) The three important metalloids are …………. (e) The elements which are sonorous are called …………. A n s w e r (a) atoms (b) mixture; compound (c) mixture (d) boron; silicon; germanium (e) metals S h o r t A n s w e r T y p e Q u e s t i o n s - P g - 5 7 2 1 . Q u e s t i o n Classify the following into elements and compounds: (i) H 2 O (ii) He (iii) Cl 2 (iv) CO (v) Co A n s w e r Elements- Substances that are made of only one element are called elements, He, Cl, Co. Compounds- Substances that are made of one or more elements by chemical combination are called compounds. H 2 O and CO. 2 2 . Q u e s t i o n Classify the following as elements or compounds: Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, UreaRead More
FAQs on Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?
| 1. What is the difference between a pure substance and a mixture? |  |
Ans.A pure substance consists of only one type of particle and has a uniform composition throughout. Examples include elements like oxygen (O₂) and compounds like water (H₂O). In contrast, a mixture contains two or more different types of particles and can vary in composition. Mixtures can be homogeneous (uniform throughout, like saltwater) or heterogeneous (not uniform, like a salad).
| 2. How can we separate the components of a mixture? | |
Ans.The components of a mixture can be separated using various physical methods, depending on the properties of the substances involved. Common methods include filtration (to separate solids from liquids), evaporation (to remove a liquid from a solution), distillation (to separate liquids based on boiling points), and chromatography (to separate substances based on their movement through a medium).
| 3. What are some common examples of pure substances in everyday life? | |
Ans.Common examples of pure substances include distilled water (H₂O), table salt (sodium chloride, NaCl), and pure metals like gold (Au) and silver (Ag). These substances maintain consistent properties and compositions, making them ideal for various applications in daily life.
| 4. Why is it important to understand the concept of purity in substances? | |
Ans.Understanding the concept of purity is essential because it affects the properties and behavior of substances in chemical reactions and practical applications. For instance, pure substances are crucial in pharmaceuticals to ensure safety and efficacy. In industrial processes, the purity of raw materials can influence the quality of the final product.
| 5. How can we identify whether a substance is pure or a mixture? | |
Ans.To identify whether a substance is pure or a mixture, one can conduct tests such as checking for uniformity in appearance, measuring boiling and melting points, or analyzing the substance using chromatography. A pure substance will have a specific melting point and boiling point, while a mixture will show a range of these values due to the presence of different components.
About this Document
4.63/5 Rating
Apr 23, 2026 Last updated
Document Description: Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? for Class 9 2026 is part of Science Class 9 preparation. The notes and questions for Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? have been prepared according to the Class 9 exam syllabus. Information about Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? covers topics like and Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? Example, for Class 9 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?.
Introduction of Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? in English is available as part of our Science Class 9 for Class 9 & Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? in Hindi for Science Class 9 course. Download more important topics related with notes, lectures and mock test series for Class 9 Exam by signing up for free. Class 9: Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?
Description
Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? of Science Class 9 on EduRev - covers important questions, MCQs with answers. Helps you prepare for exam.
Information about Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?
In this doc you can find the meaning of Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? defined & explained in the simplest way possible. Besides explaining types of Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? theory, EduRev gives you an ample number of questions to practice Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure? tests, examples and also practice Class 9 tests
Related Searches
Sample Paper, Viva Questions, Objective type Questions, Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?, MCQs, ppt, past year papers, shortcuts and tricks, Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?, Important questions, Previous Year Questions with Solutions, study material, Extra Questions, Free, video lectures, practice quizzes, Exam, pdf , mock tests for examination, Summary, Lakhmir Singh & Manjit Kaur Solutions: Is Matter around us Pure?, Semester Notes;