CHANGE OF STATES OF MATTER MATTER IN OUR SURROUNDINGS 01 Class 9th Science (Chemistry) (Practice Sheet) 1 What happens to the kinetic energy of matter particles as temperature rises? A. Decreases B. Remains constant C. Increases D. Reverses direction 2 What is the transformation from a solid to a liquid called? A. Condensation B. Melting C. Boiling D. Freezing 3 Which scale is based on 0°C for the freezing point and 100°C for the boiling point of water? A. Kelvin Scale B. Fahrenheit Scale C. Celsius Scale D. Absolute Scale 4 What happens to particles in a gas when condensation occurs? A. They stop moving B. They become free and fast-moving C. They vibrate at a higher frequency D. They solidify 5 What is the unit of the Kelvin or thermodynamic temperature scale? A. Fahrenheit B. Celsius C. Kelvin D. Centigrade 6 Explain how an increase in temperature affects the interparticle force of attraction in matter. 7 What is the significance of the boiling point in the change of state of matter? 8 Explain the concept of condensation and provide Example? 9 Compare the Celsius, Kelvin, and Fahrenheit temperature scales, highlighting their reference points. 10 Explain the concept of atmospheric pressure and its calculation. Page 1 Email: Phone No: Website:
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