CBSE Class 10 Science

Earlier Attempts At The Classification Of Elements There have been several attempts to classify the elements based on their properties. The first attempt to classify elements resulted in the classification of metals and non-metals from then-known elements. Döbereiner’s Triads (1817) Johann Wolfgang Dobereiner (a German chemist) made an effort in 1817 to organise elements with […]

COVALENT BONDING IN CARBON COMPOUNDS Covalent bonds are formed when two atoms (either identical or dissimilar) share an electron pair. Carbon (C) is a six-atomic element. So, its electronic configuration =  K/2, L/4 Thus, there are 4 electrons in its outermost shell and its octet can be completed by the following two ways It is

STUDY NOTES of Metals And Non Metals Metals – Physical Properties of Metals Metals Those elements which form positive ions by losing electrons are called metals. copper, iron, aluminium, sodium etc. Physical Properties of Metals (i) Metallic lustre : In pure state, metals have a bright shining surface. This property is called metallic lustre. Metals

CBSE Class 10 Science Notes Chapter 1 Chemical Reactions and Equations Welcome to our blog post on CBSE Class 10 Science! In this post, we have compiled a comprehensive collection of notes, question bank, and videos to help you master the chapter. Our notes are written in an easy-to-understand format and are based on the