6 Questions
What is the difference between mass number and atomic mass?
Mass number is the sum of protons and neutrons in the nucleus of an atom, while atomic mass is the average mass of all the isotopes of an element.
Explain the concept of atomic number and its significance in chemistry.
Atomic number is the number of protons in the nucleus of an atom. It determines the identity of an element and the chemical properties of the atom.
What are some important topics covered in chapter 1 of the Chemistry class 10?
Some important topics covered in chapter 1 of Chemistry class 10 include the structure of an atom, atomic number, mass number, and isotopes.
What are the key characteristics of a chemical reaction and how can you identify if a chemical reaction has occurred?
Key characteristics of a chemical reaction include the formation of new substances, change in color, evolution of gas, and release or absorption of energy. A chemical reaction can be identified by observing these changes.
Explain the law of conservation of mass and how it applies to chemical reactions.
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. This means that the total mass of the products of a chemical reaction must be equal to the total mass of the reactants.
Describe the different types of chemical reactions and provide an example of each type.
The different types of chemical reactions include combination (or synthesis), decomposition, displacement, and double displacement reactions. An example of each type could be the combination of iron and sulfur to form iron sulfide, decomposition of hydrogen peroxide into water and oxygen, displacement of zinc from zinc sulfate solution by iron, and double displacement reaction between silver nitrate and sodium chloride forming silver chloride and sodium nitrate.
Test your knowledge of important topics covered in chapter 1 of Chemistry class 10. Explore concepts such as atomic number, its significance in chemistry, and the difference between mass number and atomic mass.
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