Online Chemistry Notes for Students
Anupama Sapkota 
Atom Definition An atom is the smallest unit of matter composed of a nucleus and one or more electrons present around the nucleus. The atom is characteristic of the chemical element and is often considered the basic building block of chemistry. The atom consists of a large empty space while … Read more
Aromatic Compounds Aromatic compounds are compounds that belong to a large class of unsaturated chemical compounds that are defined by the presence of one or more planar rings of atoms linked together by covalent bonds. The stability of aromatic compounds is referred to as the aromaticity of the compounds as … Read more
Acidic Amino Acids Definition Acidic amino acids are those amino acids that have a carboxylic acid group on their side chains at neutral pH, resulting in acidic properties in the molecule. Acidic amino acids have an additional carboxylic group (COOH) in addition to the one present on the linear chain. … Read more
Amylose Definition Amylose is a polysaccharide consisting of α-D-glucose units that are linked together by α(1→4) glycosidic bonds. An amylose is an essential form of resistant starch that is more resistant to digestion than other starch molecules. The tightly packed helical structure of the molecule aids in its resistance. The … Read more
Alkali Definition Alkali is a basic soluble hydroxide of alkali metals or alkaline earth metals. These are strong bases that share most of the characteristics of bases like the formation of neutral salts with acids and the conversion of red litmus paper into the blue. The term alkali is derived … Read more
Ionic Bond Definition The ionic bond is a type of chemical interaction or linkage as a result of electrostatic attraction between oppositely charged ions or atoms having different electronegativities. The ionic bond is one of the three major types of chemical bonds occurring between chemical units in order to reach … Read more