Class 9 Exam > Class 9 Videos > Introduction (Matter, Substances, Mixtures and Types)
Introduction (Matter, Substances, Mixtures and Types) Video Lecture - Class 9
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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Dec 14, 2024 Last updated |
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