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Introduction (Matter, Substances, Mixtures and Types) Video Lecture - Class 9

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FAQs on Introduction (Matter, Substances, Mixtures and Types) Video Lecture - Class 9

1. What is the definition of matter?
Ans. Matter is anything that has mass and occupies space. It can exist in three states - solid, liquid, or gas.
2. What are substances?
Ans. Substances are pure forms of matter that cannot be separated into simpler components by physical means. They have a fixed composition and distinct properties.
3. What are mixtures?
Ans. Mixtures are combinations of two or more substances that are not chemically bonded. They can be separated into their individual components through physical means.
4. What are the different types of mixtures?
Ans. There are two types of mixtures: homogeneous mixtures and heterogeneous mixtures. Homogeneous mixtures have a uniform composition throughout, while heterogeneous mixtures have visibly different components.
5. Can mixtures be separated by physical means?
Ans. Yes, mixtures can be separated by physical means. Common separation techniques include filtration, distillation, evaporation, and chromatography. These methods take advantage of the different physical properties of the components in a mixture.
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