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Some Numericals : 1 - Some Basic Concepts of Chemistry Video Lecture - Class 11
FAQs on Some Numericals : 1 - Some Basic Concepts of Chemistry Video Lecture - Class 11
| 1. What are the basic concepts of chemistry? |  |
Ans. The basic concepts of chemistry include the study of matter, its properties, composition, structure, behavior, and the changes it undergoes during chemical reactions. It also involves the study of atoms, molecules, elements, compounds, and the laws that govern their behavior.
| 2. What is the importance of chemistry in our daily life? | |
Ans. Chemistry plays a vital role in our daily life. It is used in various fields such as medicine, agriculture, food, energy, and environment. It helps us to understand the composition and behavior of various substances and their effects on our health and environment.
| 3. What is the difference between an element and a compound? | |
Ans. An element is a pure substance that consists of only one type of atom. It cannot be broken down into simpler substances by chemical means. On the other hand, a compound is a pure substance that consists of two or more different types of atoms chemically combined in a fixed ratio. It can be broken down into simpler substances by chemical means.
| 4. What is the mole concept in chemistry? | |
Ans. The mole concept in chemistry is a convenient way of expressing the amount of a substance. One mole of any substance contains the same number of particles, i.e., Avogadro's number (6.022 × 10²³). It is used to calculate the mass, volume, and number of particles of a substance.
| 5. What are the different types of chemical reactions? | |
Ans. There are several types of chemical reactions, including combination reactions, decomposition reactions, displacement reactions, redox reactions, and acid-base reactions. In combination reactions, two or more substances combine to form a new substance. In decomposition reactions, a single compound breaks down into two or more simpler substances. In displacement reactions, one element takes the place of another element in a compound. In redox reactions, there is a transfer of electrons between the reactants. In acid-base reactions, an acid reacts with a base to form a salt and water.
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