Class 9 Exam > Class 9 Videos > Science Class 9 > Detailed Explanation: Is Matter Around Us Pure
Detailed Explanation: Is Matter Around Us Pure Video Lecture | Science Class 9
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FAQs on Detailed Explanation: Is Matter Around Us Pure Video Lecture - Science Class 9
| 1. What is matter and how is it classified? |  |
Ans. Matter is anything that occupies space and has mass. It can be classified into two types: pure substances and mixtures. Pure substances are further divided into elements and compounds.
| 2. How can we differentiate between a pure substance and a mixture? | |
Ans. A pure substance is composed of only one type of particle, either an element or a compound, while a mixture is composed of two or more substances that are physically combined and can be separated by physical methods.
| 3. What are the different methods to separate mixtures? | |
Ans. There are various methods to separate mixtures, including filtration, distillation, evaporation, chromatography, and magnetism. These methods exploit the differences in physical properties of the substances in the mixture.
| 4. Can a pure substance be further broken down into simpler substances? | |
Ans. No, a pure substance cannot be broken down into simpler substances by physical methods. However, some pure substances can be decomposed into simpler substances through chemical reactions.
| 5. Are all substances around us pure? | |
Ans. No, not all substances around us are pure. Most substances we encounter in our daily lives are mixtures, which means they are composed of more than one substance. Examples include air, tap water, and soil.
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Nov 23, 2024 Last updated |
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