Class 7 Exam > Class 7 Videos > Matter and Chemical formula - Class 7
Matter and Chemical formula - Class 7 Video Lecture
FAQs on Matter and Chemical formula - Class 7 Video Lecture
| 1. What is matter? |  |
Ans. Matter is anything that occupies space and has mass. It can be in the form of solids, liquids, or gases.
| 2. What is a chemical formula? | |
Ans. A chemical formula is a representation of a chemical compound using symbols for its constituent elements. It shows the ratio of atoms of each element in the compound.
| 3. How is a chemical formula written? | |
Ans. A chemical formula is written by using the symbols of the elements present in the compound and indicating the number of atoms of each element with subscripts. For example, H2O represents water, where H indicates hydrogen and O indicates oxygen.
| 4. What is the significance of a chemical formula? | |
Ans. The chemical formula provides important information about a compound, including the types and number of atoms present. It helps in identifying and distinguishing different substances, understanding their properties, and predicting their behavior in chemical reactions.
| 5. Can a chemical formula represent a mixture? | |
Ans. No, a chemical formula represents a pure substance, not a mixture. A mixture consists of two or more substances that are physically combined, and its composition can vary. In contrast, a chemical formula represents a specific compound with a fixed composition.
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Matter and Chemical formula - Class 7 for Class 72025 is part of Class 7 preparation. The notes and questions for Matter and Chemical formula - Class 7
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