2020 © Learners' Planet, All rights reserved. 13. These questions form the basis of new CBSE exam pattern introduced in 2019-20 session for class 9 as well as class 10.Check out the CBSE Marking scheme from the year (2019-20). Detailed answers to all the exercise questions provided here will help you understand the fundamental concepts involved in the chapter. CBSE Class 9 Chemistry Worksheet - Matter In Our Surrounding  - Practice worksheets for CBSE students. Prepared by teachers of the best CBSE schools in India. (e) Had substance been water, its melting point should have been 00 C and boiling point 100º C. It is therefore not water. Fill in the blanks ① The process of converting solid into liquid is called _____. (a) What is the physical state of the substance at the points A, B, C and D ? Give reason – A gas fills completely the vessel in which it is kept. 14. Enter pincode to get tutors in your city. 26. 203.108. Wearing synthetic clothes in summers is usually avoided. Online Test for Class 9 Chemistry Matter In Our Surroundings . A substance is in liquid state at room temperature and changes into gas upon heating. When sugar is dissolved in water, there is hardly an increase in volume. Write any five characteristics of solids, liquids and gases. Ans. 24. 7. Explain with help of an activity and a diagram. 20. Therefore, it will evaporate at a faster rate than water. Does the evaporation of a liquid occur only at a fixed temperature? 17. On increasing temperature, molecules will gain energy and will start moving haphazardly thus changing the state of solid carbon dioxide. Name the conditions to liquefy a gas. Arrange in the order indicated for solid, liquid and gas. ② _____ is the process in which the liquid phase changes to gaseous phase at a constant temperature and constant pressure. CBSE Class 9 Chemistry Worksheet - Matter In Our Surrounding. (iv) thermal expansion - increasing order, (a) Increase in pressure (b) Decrease in presssure, (c) Increase in temperature (d) Decrease in temperature, (c) mixture of carbon dioxide and hydrogen. At point C : The substance is in the liquid state. 18. This will check the rancidity of butter or it will not give any foul odour. 9099920082/9099020032, Email us: Copper sulphate on dissolution in water releases (Cu, Temperature on kelvin scale = 78 + 273 = 351 K. No, the evaporation of a liquid occurs at all temperatures. (c)No … Matter in Our Surroundings CBSE chapter-wise MCQ Multiple Choice Questions, Test Paper,Sample paper based on CCE pattern , Matter in Our Surroundings. What is the corresponding temperature on kelvin scale? At point D : The substance has started boiling. The concepts and notes are in easy to learn format. In summer, the weather is a quite hot. At point B: The substance has started melting. Why can a sponge be compressed though it is a solid? (b) What is the melting point of the substance? Together with Science Class 9 Solutions Chapter 1 - Matter in Our Surroundings. (e) Had substance been water, its melting point should have been 0. They ultimately condense and as a result, the gas liquefies or changes into the liquid state. 6. Home › Grade9 › Grade 9 CBSE › Chemistry › Matter in Our Surrounding › Matter in our surrounding Worksheet-6 Matter in our surrounding Worksheet-6 Are the melting point temperature of the solid state and the freezing point temperature of the liquid state of a substance different? Find the solution to all questions in chapter 1 of together with Class 9 science book. Why does a solid change into liquid on heating?

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