Read and download free pdf of CBSE Class 9 Science Preparation Of Mixture And Compound Worksheet. Students and teachers of Class 9 Science can get free printable Worksheets for Class 9 Science Preparation Of Mixture And Compound in PDF format prepared as per the latest syllabus and examination pattern in your schools. Class 9 students should practice questions and answers given here for Science in Class 9 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 9 Science Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems with solutions on daily basis to get more score in school exams and tests
Worksheet for Class 9 Science Preparation Of Mixture And Compound
Class 9 Science students should refer to the following printable worksheet in Pdf for Preparation Of Mixture And Compound in Class 9. This test paper with questions and answers for Class 9 will be very useful for exams and help you to score good marks
Class 9 Science Worksheet for Preparation Of Mixture And Compound
• Changes which involve a change in the physical properties of a substance.
• Formation of a new substance does not take place during a physical change.
• Most physical changes can be reversed easily
• The chemical composition of the substance undergoing a physical change remains the same.
• Chemical Change
• Changes which involve a change in the chemical composition of a substance, undergoing the change
• Formation of one or more new substances takes place during a chemical change.
• Most chemical changes can not be reversed easily.
• The chemical composition of the substance undergoing a chemical change does not remain the same
• Chemical changes are always accompanied by a change in energy
Pure substance can be classified as elements or compounds.
Element: The basic form of matter that cannot be broken down into simpler substances by chemical reactions’.
Elements can be further classified as metals, non-metals, metalloids and noble gases.
Compound: Compounds are formed when two or more elements combine chemically in a fixed proportion.
1. Mixtures refer to those substances which consist of two or more elements or
compounds, mixed together in any ratio and do not give rise to new compound. For
example: sea water, air, chocolate milk etc.
2. Mixture is composed of two or more substances mixed together in any ratio i.e. the
composition is variable and do not possess properties like fixed melting or boiling
3. Mixture shows the properties similar to that of its constituents and they can be
separated by using physical and chemical methods.
4. There are two types of mixtures:
i. Homogeneous mixtures: Such mixtures have only one phase. They have the
same composition throughout and there is no visible separation of line between the
constituents. For example: sugar solution, vinegar etc.
ii. Heterogeneous mixture: Mixtures which has more than one phase is known as
heterogeneous mixture. There is a visible boundary of separation between the
components and they do not have the same composition throughout.
5. Homogeneous mixtures are of three types: (i) Solid homogeneous mixture (alloys),
(ii) Liquid homogeneous mixture (solution of alcohol in water) and (iii) Gaseous
homogeneous mixture (air).
6. Heterogeneous mixtures are of three types: (i) Solid heterogeneous mixture
(mixture of sand and sugar), (ii) Solid-liquid heterogeneous mixture (solution of chalk in water) and (iii) Gaseous heterogeneous mixture (smoke in air).
• Substance – Cannot be separated into its constituent particles by any physical process
• Solution – Homogeneous mixture of two or more substances
• Alloys – Homogeneous mixture of metals
• The component of the solution that dissolves the other component in it is called solvent (present in larger amount).
• The component of the solution that is dissolved in the solvent is called solute (present in lesser quantity).
Properties of solution:
• Homogeneous mixture
• Particles are extremely small, not visible to the naked eye
• Light path not visible
• Solute particles cannot be separated by filtration
• Heterogeneous mixture of solids and liquids
• Solid particles suspend throughout the medium
• Heterogeneous mixture
• Particles visible by the naked eye
• Light path visible
• Particles settle down
• Solute particles can be separated by filtration
• Example – sand in water
• Separation process
• Evaporation – For mixture of volatile solvents and non-volatile solutes
Centrifugation – Cream from milk
• In diagnostic laboratories for blood and urine tests
• In dairies and homes for separation of butter from milk
• For drying wet clothes
• Separating funnel – Immiscible liquids are separated out in layers (oil and water, slag in iron extraction)
• Sublime solids
• Ammonium chloride
• Chromatography – To separate those solutes that dissolve in the same solvent
• To separate
• Colours in dye
• Pigments from natural colour
• Drugs from blood
Distillation – To separate two miscible liquids that boil without decomposition (acetone + water)
• When the boiling temperature difference is less than 25 K
• (Different factions from petroleum products)
• Air components are separated by fractional distillation
Crystallization – Process to separate pure solids from a solution by forming crystal (copper sulphate from an impure sample)
• Uses – Purification of salt
• Separation of alum from an impure sample
Solvent extraction − Process to separate substances using an appropriate solvent based on the soluble nature of the components of mixture (salt + sand)
PREPARATION OF MIXTURE & COMPOUND
Experiment No: ……4……. Date: ………..
Objective: To prepare (a) mixture and (b) a compound using iron filings and sulphur powder and distinguish between these on the basis of:
(a) Appearance (homogeneity and heterogeneity); (b) Behaviour towards magnet
(c) Behaviour towards Carbon disulphide (CS2); (d) Effect of heat.
Requirements: China dish, test tubes, test tube holder, mortar and pestle, watch glasses, magnet, Bunsen burner, iron filings, tripod stand, wire gauze, sulphur powder, CS2 etc.
1. Take 7 g of Iron filings and 4 g of sulphur powder and mix them well using mortar and pestle. Transfer half of this into watch glass no-1
2. Take half of this mixture in a china dish heat strongly on a Bunsen burner (Use tripod stand and wire gauze) till the mixture starts to show a red glow.
3. Cool the mixture, and grind into fine powder using a mortar and pestle.
4. Transfer the powder to watch glass no-2.
5. Perform the following experiments with the samples you have in both the watch glasses.
Properties of mixture of iron &sulphur
|Dip a magnet in the mixture of substances
|Only iron powder/filing gets
attracted by the magnet
|Iron has magnetic properties but sulphur does not.
|Observe the substances under a magnifying glass
|Brown/black iron powder and yellow coloured sulphur powder can be easily distinguished.
|Because it forms a heterogeneous mixture
|Try to dissolve the mixture in 2 ml of CS2 taken in a test tube.
|Yellow coloured sulphur dissolves. Fe does not.
|Sulphur is soluble in CS2
Properties of compound of iron &sulphur
|A small portion of the mixture is taken on china dish and heat
strongly on a Bunsen flame
|A reaction takes place with the
emission of an offensive smelling
gas. Sulphur also catches fire.
Finally the yellow colour of S disappears and a brown substance is formed.
|Fe + S → FeS (Ferrous sulphide)
Some sulphur also gets burned
results in the formation of
offensive smelling SO2 gas.
|Observe the product formed after heating under a magnifying glass
|Only a brown coloured powder is
|On reacting Fe and S combine to
form a compound, which is homogeneous.
|Dip a magnet in the product formed.
|Substance does not get attracted by the magnet
|FeS is diamagnetic (Does not show magnetic behaviour)
|Take the product formed in a test tube, add CS2 and shake
|The substance (FeS) does not
dissolve in CS2
|FeS is insoluble in CS2
1. Heating of the Fe & S mixture should be done with extreme care.
2. While performing the experiments, use only very little quantity of the samples.
3. Use china dish for heating the mixture.
1. Name the compounds formed when the following chemicals react:
a) Hydrogen and Oxygen
b) Mg and S
b) S and Fe
d) Fe and Cl2.
2 Classify the following into homogeneous and heterogeneous mixtures.
a) Sand and saw dust
b) Sugar dissolved in water.
d) Powders of Fe and S
3 Suggest suitable physical methods to separate the following mixtures:
a. Fe and S Magnet
b. NaCl and water Evaporation/Boiling
c. Sand and water Filtration
4 Classify the following into compounds, elements and mixture:
a. Air b. CO2 gas, c. Fe metal d. S powder f. Sugar solution e. Ethane
f. Fe + S g. NaCl h. SO2 gas. i. H2S gas j. Ammonia gas k. Milk
Multiple choice type questions
1 On heating a mixture of iron filings & sulphur ,it is observed that
a) Sulphur starts melting
b) iron filings start melting
c) mixture becomes red hot
d) mixture evaporates
2 When dilute sulphuric acid is added to a mixture of iron filings & sulphur owder ,it is observed that
a) A brisk reaction takes place without evolution of gas
b) A brisk reaction takes place with the evolution of a colourless gas
c) The yellow colour of sulphur disappears
d) Gas with the smell of rotten egg is evolved
3 A small amount of iron sulphide is added to 5 cc of carbon di sulphide and the test tube is shaken vigourously, it is seen that
a) Grey coloured iron particles dissolve,but not sulphur
b) Yellow coloured sulphur particles dissolve, but not iron
c) Both iron &sulphur dissolve to form a clear solution
d) None of the particles of the compound dissolves.
4 When a mixture iron &sulphur powder is reacted in a china dish ,then after some time it glows with
a) Yellowish colour
b) Bluish colour
c) Greenish colour
d) Reddish colour
5 On heating a mixture of iron filings &sulphur powder strongly,the colour of the product becomes
a) Grey b) Black c) Brown d) Yellow
6 To prepare iron sulphide ,by heating a mixture of iron filings &sulphur powder ,we should use
b) china dish
c) petri dish
d) china dish
7 The reaction of iron and sulphur to form iron sulphide takes place at:
a) at high temperature
b) in the presence of a catalyst
c) at moderate temperature
d) in the presence of an acid
|CBSE Class 9 Chemistry Matter In Our Surrounding Worksheet
|CBSE Class 9 Chemistry Is Matter Around Us Pure Worksheet
|CBSE Class 9 Chemistry Atoms And Molecules Worksheet
|CBSE Class 9 Chemistry Structure Of Atom Worksheet
|CBSE Class 9 Biology Fundamental Unit Of Life Worksheet
|CBSE Class 9 Biology Tissues Worksheet
|CBSE Class 9 Science Tissues Animals Worksheet
|CBSE Class 9 Science Tissues Plants Worksheet
|CBSE Class 9 Biology Diversity In Living Organisms Worksheet
|CBSE Class 9 Science Diversity In Living Organisms Animals Worksheet
|CBSE Class 9 Science Diversity In Living Organisms Plants Worksheet
|CBSE Class 9 Physics Motion Worksheet
|CBSE Class 9 Physics Force And Laws Of Motion Worksheet
|CBSE Class 9 Physics Gravitation Worksheet
|CBSE Class 9 Physics Work And Energy Worksheet
|CBSE Class 9 Physics Sound Worksheet
|CBSE Class 9 Biology Why Do We Fall Ill Worksheet
|CBSE Class 9 Biology Natural Resources Worksheet
|CBSE Class 9 Biology Improvement In Food Resources Worksheet
|CBSE Class 9 Chemistry Experiments Worksheet
|CBSE Class 9 Chemistry MCQs On Practical Skills Worksheet
|CBSE Class 9 Chemistry Practicals Worksheet
|CBSE Class 9 Chemistry Revision Worksheet
More Study Material
CBSE Class 9 Science Preparation Of Mixture And Compound Worksheet
We hope students liked the above worksheet for Preparation Of Mixture And Compound designed as per the latest syllabus for Class 9 Science released by CBSE. Students of Class 9 should download in Pdf format and practice the questions and solutions given in the above worksheet for Class 9 Science on a daily basis. All the latest worksheets with answers have been developed for Science by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their class tests and examinations. Studiestoday is the best portal for Class 9 students to get all the latest study material free of cost.
Worksheet for Science CBSE Class 9 Preparation Of Mixture And Compound
Expert teachers of studiestoday have referred to the NCERT book for Class 9 Science to develop the Science Class 9 worksheet. If you download the practice worksheet for one chapter daily, you will get higher and better marks in Class 9 exams this year as you will have stronger concepts. Daily questions practice of Science worksheet and its study material will help students to have a stronger understanding of all concepts and also make them experts on all scoring topics. You can easily download and save all revision worksheet for Class 9 Science also from www.studiestoday.com without paying anything in Pdf format. After solving the questions given in the worksheet which have been developed as per the latest course books also refer to the NCERT solutions for Class 9 Science designed by our teachers
Preparation Of Mixture And Compound worksheet Science CBSE Class 9
All worksheets given above for Class 9 Science have been made as per the latest syllabus and books issued for the current academic year. The students of Class 9 can be rest assured that the answers have been also provided by our teachers for all worksheet of Science so that you are able to solve the questions and then compare your answers with the solutions provided by us. We have also provided a lot of MCQ questions for Class 9 Science in the worksheet so that you can solve questions relating to all topics given in each chapter. All study material for Class 9 Science students have been given on studiestoday.
Preparation Of Mixture And Compound CBSE Class 9 Science Worksheet
Regular worksheet practice helps to gain more practice in solving questions to obtain a more comprehensive understanding of Preparation Of Mixture And Compound concepts. Worksheets play an important role in developing an understanding of Preparation Of Mixture And Compound in CBSE Class 9. Students can download and save or print all the worksheets, printable assignments, and practice sheets of the above chapter in Class 9 Science in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 9 Science MCQ Test for the same chapter.
Worksheet for CBSE Science Class 9 Preparation Of Mixture And Compound
CBSE Class 9 Science best textbooks have been used for writing the problems given in the above worksheet. If you have tests coming up then you should revise all concepts relating to Preparation Of Mixture And Compound and then take out a print of the above worksheet and attempt all problems. We have also provided a lot of other Worksheets for Class 9 Science which you can use to further make yourself better in Science
You can download the CBSE Printable worksheets for Class 9 Science Preparation Of Mixture And Compound for latest session from StudiesToday.com
Yes, you can click on the links above and download Printable worksheets in PDFs for Preparation Of Mixture And Compound Class 9 for Science
Yes, the Printable worksheets issued for Class 9 Science Preparation Of Mixture And Compound have been made available here for latest academic session
You can easily access the links above and download the Class 9 Printable worksheets Science Preparation Of Mixture And Compound for each chapter
There is no charge for the Printable worksheets for Class 9 CBSE Science Preparation Of Mixture And Compound you can download everything free
Regular revision of practice worksheets given on studiestoday for Class 9 subject Science Preparation Of Mixture And Compound can help you to score better marks in exams
Yes, studiestoday.com provides all latest NCERT Preparation Of Mixture And Compound Class 9 Science test sheets with answers based on the latest books for the current academic session
Yes, studiestoday provides worksheets in Pdf for Preparation Of Mixture And Compound Class 9 Science in mobile-friendly format and can be accessed on smartphones and tablets.
Yes, worksheets for Preparation Of Mixture And Compound Class 9 Science are available in multiple languages, including English, Hindi