CLASS IX NCERT SCIENCE Chapter 1 Matter in our surroundings
About Me: Gargee Vats Pursing B.tech from G. B. Pant University of agriculture and technology, Uttarakhand Preparing for UPSC CSE. Learning enthusiast. Please do Like , Share and Recommend.
Temperature >Degree of hotness or coolness. Unit of temperature: SI Unit of measuring temperature is 'kelvin'. Most common unit is degree celsius". Values: Melting point of ice is 273.16 K or 00C. Boiling point of water is 373 K or 100 C.
Conversion a) Celsius Kelvin temp in kelvin = temp in celsius + 273.16 b) Kelvin Celsius temp in celsius = temp in kelvin-273.16 Remember: 00C = 273 K.
Change of states of matter Sublimation Melting aporization Solid Liquid Gas Freezing Condensation Reverse Sublimation By changing pressure or temperature.
Quick Recap Solid to liquid : 1. process is melting. 2.temperature is melting point. 3. change of physical state. 4.temperature remains same. Liquid to gases : 1. process is boiling. 2.temperature is boiling point. 3. change of physical state. 4.temperature remains same.
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