Class 9 Exam > Class 9 Videos > Science Olympiad Class 9 > Is Matter Around us Pure
Is Matter Around us Pure Video Lecture | Science Olympiad Class 9
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FAQs on Is Matter Around us Pure Video Lecture - Science Olympiad Class 9
| 1. What is the definition of a pure substance? |  |
Ans. A pure substance is a type of matter that has a fixed composition and cannot be separated into other substances by physical means.
| 2. How is a mixture different from a pure substance? | |
Ans. A mixture is a combination of two or more substances in which each substance retains its individual properties, whereas a pure substance has a fixed composition.
| 3. What are the two types of pure substances mentioned in the article? | |
Ans. The two types of pure substances are elements and compounds, as discussed in the article "Is Matter Around Us Pure."
| 4. Can pure substances be separated into simpler substances? | |
Ans. Pure substances such as elements cannot be separated into simpler substances by physical means, while compounds can be broken down into simpler substances through chemical reactions.
| 5. How do impurities affect the purity of a substance? | |
Ans. Impurities decrease the purity of a substance by altering its composition and properties. In contrast, a pure substance is free of impurities and maintains a consistent composition.
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Nov 22, 2024 Last updated |
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