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Atoms and Molecules

Ionic Compounds

Last Updated on July 3, 2023 By Mrs Shilpi Nagpal

Question 1 What are ionic compound? Question 2 What are covalent compounds? Question 3 Define chemical bond? Question 4 Why noble gases do not react? Question 5 What are ions? Question 6 How ions are formed? Question 7 What are cations. How they are formed? Question 8 Give example of cation formation? Question 9 What are anions? Question 10 How anions … [Read more...] about Ionic Compounds

Atoms and Molecules

Last Updated on July 3, 2023 By Mrs Shilpi Nagpal

Law of conservation of mass

Question 1 Which Indian philosopher suggested that all matter is composed of ver small particles. What name was given by him to these particles? Question 2 What is law of conservation of mass? Give example? Question 3 What is meant by law of constant proportion? Give example? Question 4 Name the scientist who gave law of conservation of mass? Question 5 Name the … [Read more...] about Atoms and Molecules

Mole Concept

Last Updated on July 3, 2023 By Mrs Shilpi Nagpal

number of moles

Question 1 Define a mole?   Question 2 What is the value of Avogadro's constant?   Question 3 Define mole of an atom?   Question 4 Define mole of a molecule?   Question 5 Write the formula to calculate the number of moles?   Mole Concept   In a chemical reaction equation,it is more convenient to use quantity of substance in number of its molecules or atoms rather … [Read more...] about Mole Concept

Gram Molecular Mass

Last Updated on July 3, 2023 By Mrs Shilpi Nagpal

Question 1 What is gram molecular mass? Gram Molecular mass The amount of a substance whose mass in grams is numerically equal to its molecular mass,is called gram molecular mass of that substance. The molecular mass of a substance expressed in grams is called gram molecular mass. To write gram molecular mass of a substance ,we write its molecular mass and then … [Read more...] about Gram Molecular Mass

Valency of Ion

Last Updated on July 3, 2023 By Mrs Shilpi Nagpal

CCl4

Question 1 Define the term valency? Question 2 What are monovalent ion. Give example? Question 3 What are divalent ion. Give example? Question 4 What are trivalent ion. Give example? Question 5 What do you mean by chemical formulae of a compound? Question 6 What are the steps to write chemical formulae of a compound? Question 7 What is gram atomic … [Read more...] about Valency of Ion

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