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
Atoms and Molecules
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
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
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
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