Science NCERT Solutions for Class 9 Science

2.  Matter is anything that occupies the space and has certain mass. Matter can be impure or pure. Impure matter is a mixture of many pure substances. Mixture contains more than one kind of pure form of matter in which their constituents do not lose their identity.  Suspension is a type of heterogeneous mixture. Colloid is a type heterogeneous mixture with a dispersed phase and a dispersion medium. Their particle size is more than the 1 nanometer but particles cannot be seen with naked eye. These particles can scatter light.  The components of a mixture can be separated by various physical methods that include: evaporation, sublimation, separating funnel method etc. Evaporation is used to separate a volatile component from a non-volatile component. Sublimation is used to separate a sublimable volatile component from a non-sublimable component. Separating funnel method is used to separate two immiscible liquids from their mixture.

3.  NCERT Solutions for Class 9 Science can be found on the Extramarks app and the website. The app has solutions for all the textbook questions that can help the students become thorough with the chapters and the questions. The app can be a good and reliable learning tool for students. Download the Extramarks app and get a trial period of 7days free of charge. For more information visit and register at https://www.extramarks.com/study-material/icse-class- 9/economics For more information visit and register at Extramarks Extramarks website. website.

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