cbsenotes • 2017-10-08
PERIODIC CLASSIFICATION OF ELEMENTS (Concept Points) Modern Periodic Tablecredits: By Mbenzdabest (Own work) [CC BY-SA 4.0 ]- via Wikimedia Commons 1. Early chemists classified elements as
cbsenotes • 2017-10-05
Carbon and its Compounds Important Points To Memorise 1. Carbon forms a large variety of compounds because of its tetra-valency and the property of catenation. 2. Hydrocarbons are the
cbsenotes • 2017-09-17
Metals and Non-Metals (Short Q and A) Q1: Define Element. Answer: An element is a pure substance which is made up of same kind of atom which differs from their physical and chemical properties.
cbsenotes • 2017-08-30
Alloys - Compositions- Properties and Uses ① Steel Components: Iron- Carbon Properties: Hard and Strong Uses: - Construction of buildings and bridges- - manufacture of ships - manufacture
cbsenotes • 2017-08-05
pH of common Acids- Bases and Salts The acidity of an aqueous solution relies on the concentration of hydronium ions- [H₃O⁺]. For various products (acids- bases and salts)- the magnitude of