Viva Science Lab Skills - Class IX (with notebook)

Contents:

PHYSICS

Chapter 1: Thrust, Pressure and Floatation • Determination of the density of solid (denser than water) by using a spring balance and a measuring cylinder • Establishing the relation between the loss in weight of a solid when fully immersed in (a) tap water (b) strongly salty water, with the weight of water displaced by it

Chapter 2: Sound • Determination of the speed of a pulse propagated through a stretched string/slinky (helical spring) • Verification of the Laws of reflection of sound

Projects • Project P1: Time period of a Simple Pendulum • Project P2: Hydrometer • Project P3: Joule's Constant

CHEMISTRY

Chapter 1: Change of State of Matter • Determination of the melting point of ice and the boiling point of water

Chapter 2: Mixtures and Compounds • Preparation of (a) a mixture (b) a compound using iron filings and sulphur powder and distinguish between these on the basis of (i) appearance, i.e., homogeneity and heterogeneity (ii) behaviour towards a magnet (iii) behaviour towards carbon disulphide as a solvent (iv) effect of heat • Preparation of: (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 solution of starch in water and egg albumin/milk in water and distinguish between these on the basis of (i) transparency, (ii) filtration criterion, (iii) stability • Separation of the components of a mixture of sand, common salt, and ammonium chloride (or camphor) • Performing the following reactions and classifying them as physical or chemical changes: (a) Iron with copper sulphate solution in water (b) Burning of magnesium ribbon in air (c) Zinc with dilute sulphuric acid (d) Heating of copper sulphate crystals (e) Sodium sulphate with barium chloride in the form of their solutions in water

Chapter 3: Laws of Chemical Combination • Verification of the Law of conservation of mass in a chemical reaction

Projects • Project P1: Saturated Solution of a Substance • Project P2: Identification of Solution • Project P3: Development of Atomic Theory • Project P4: Model of a Compound

BIOLOGY

Chapter 1: Cell: The Basic Unit of Life • Preparation of stained temporary mounts of (a) onion peel (b) human cheek cells and to record observations and draw their labelled diagrams

Chapter 2: Tissues • Identification of Parenchyma, Collenchyma and Sclerenchyma tissues in plants, striped, smooth and cardiac muscle fibres and nerve cells in animals from prepared slides. Drawing of their labelled diagrams.

Chapter 3: Biological Diversity • Study of the characteristics of Spirogyra/Agaricus, Moss/Fern, Pinus (either with male or female cone) and an Angiospermic plant. Drawing and providing two identifying features of the groups they belong to. • Study of the external features of root, stem, leaf and flower of monocot and dicot plants • Observing the given pictures/charts/models of earthworm, cockroach, bony fish and bird. For each organism, drawing of their picture and recording: (a) one specific feature of its phylum (b) one adaptive feature with reference to its habitat

Projects • Project P1: Food Production • Project P2: Apical Meristem • Project P3: Diversity in Living Organisms • Project P4: Health and Diseases

About the Authors:

Dr. S K Jain did his postgraduation from IIT Delhi and PhD from University of Delhi. He specializes in Physical Chemistry and takes special interest in Electrochemistry and Energy Conversion. He has published over fifty research papers in journals of international repute. Dr. Jain has visited several countries on research assignments as Research Associate and also as Visiting Scientist. He has written many textbooks for school and college students.

Madhu Bahl did her postgraduation (M.Sc. Honours) in Botany from J & K University, Srinagar; B.Ed. from Punjab University and stood first in the University. She is the Founder Principal of KB DAV Senior Secondary Public School at Chandigarh. She has 35 years of experience in teaching and school administration. Having worked with hundreds of students, she has intense first-hand knowledge of how they learn and the difficulties they encounter. Madhu Bahl is the recipient of the National Teachers Award by the President of India, CBSE National Teachers Award and State Award for her contribution in the field of education.

Dr. Shailesh K Jain did his postgraduation from IIT Kanpur and PhD from the United Kingdom. He specializes in the field of Heterogeneous Catalysis and has special interest in the field of Analytical Chemistry related to the metallurgical operations. He has published several research papers and co-authored many textbooks for school and college students. He is involved actively in the popularization of Science at School undergraduate levels.