Course Content
Laboratory Manual (Science) Chemistry Class 9th
1. True Solution, Suspension and Colloid To prepare : (a) a true solution of common salt, sugar and alum. (b) a suspension of soil, chalk powder and fine sand in water. (c) a colloidal of starch in water and egg albumin/milk in water and distinguish between them on the basis of (i) transparency, (ii) filtration criterion, and (iii) stability. 2. Mixture and Compound To prepare (a) a mixture, (b) a compound. Using iron filings and sulphur powder and distinguish between them on the basis of : (i) appearance i.e., homogeneity or heterogeneity (ii) behaviour towards a magnet (iii) behaviour towards carbon disulphide (a solvent) (iv) effect of heat. 3. To Study a Few Reactions To carry out the following reactions and classify them as physical or chemical changes : (i) Iron with copper sulphate solution in water. (ii) Burning of magnesium in air. (iii) Zinc with dilute sulphuric acid. (iv) Heating of copper sulphate. (v) Sodium sulphate with barium chloride in the form of their solutions in water. 4. M elting Point of Ice and Boiling Point of Water To determine the melting point of ice and boiling point of water. 5. Law of Conservation of Mass To verify the law of conservation of mass in a chemical reaction.
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Video 1 – True Solution, Suspension and Colloid
05:28
Video 2.1 – Mixture and Compound
04:38
Video 2.2 – Separation of Compound
03:44
Video 3 – To Study a Few Reactions
04:09
Video 4 – Melting Point of Ice and Boiling Point of Water
02:56
Video 5 – Law of Conservation of Mass
03:50
Laboratory Manual (Science) Physics Class 9th
1. Reflection of Sound To verify the law of reflection of sound. 2. Determining the Density of a Solid To determine the density of a given solid (denser than water) by using a spring balance and a measuring cylinder. 3. Archimedes’ Principle To establish the relation between the loss in weight of a solid when fully immersed in (i) tap water (ii) strongly salty water, with the weight of water displaced by it by taking at least two different solids. 4. Determining Velocity of a Pulse To determine the velocity of a pulse propagated through a stretched string/slinky
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Video 1 – Reflection of Sound
02:23
Video 2 – Determining the Density of a Solid
06:37
Video 3 – Archimedes’ Principle
06:38
Video 4 – Determining Velocity of a Pulse
03:33
Laboratory Manual (Science) Biology Class 9th
1.1 Preparing Stained Temporary Mount of Onion Peel To prepare stained temporary mount of onion peel, and to record observations and draw its labelled diagram. 1.2 Preparing Stained Temporary Mount of Human Cheek Cells To prepare stained temporary mount of human cheek cells, and to record observations and draw its labelled diagram. 2. Plant and Animal Tissues To identify parenchyma, collenchyma and sclerenchyma tissues in plants, striped, smooth, cardiac muscle fibres and nerve cells in animals from prepared slides and to draw their labelled diagrams.
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Video 1.1 – Preparing Stained Temporary Mount of Onion Peel
03:48
Video 1.2 – Preparing Stained Temporary Mount of Human Cheek Cells
02:16
Video 2 – Plant and Animal Tissues
06:03
Lab Manual Science Class 9 CBSE
About Lesson

To prepare
(a) a mixture, (b) a compound.
Using iron filings and sulphur powder and distinguish between them on the basis of :
(i) appearance i.e., homogeneity or heterogeneity
(ii) behaviour towards a magnet
(iii) behaviour towards carbon disulphide (a solvent)
(iv) effect of heat.

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