Berzelius a Swedish chemist, gave a hypothesis called Berzelius hypothesis which states that: Equal volume of all gases under similar conditions of temperature and pressure contain equal number of atoms. For Example: Hydrogen + Chlorine → 2 Hydrogen chloride gas 1 vol 1 vol 2 vol n atoms n atoms … [Read more...] about Avogadro’s Hypothesis
atomicity
Classification of Matter
Matter Matter is defined as anything that occupies space and possesses mass. Classification of Matter (1) Physical classification (a) Solid (b) Liquid (c) Gases Solid Liquid Gases (1) They have fixed shape and volume They do not have fixed shape but have fixed volume They do not have fixed shape and volume (2) They cannot be compressed They … [Read more...] about Classification of Matter
Molecules
Question 1 What is a molecule. Give example? Question 2 How do atoms usually exist? Question 3 Why atoms form molecules or ions? Question 4 Define covalent bond? Question 5 What is meant by molecule of an element? Question 6 What is meant by molecule of a compound? Question 7 Define the term atomicity? Question 8 What are monoatomic molecules.Give … [Read more...] about Molecules