Online Chemistry Notes for Students
Hard Water Definition Hard water is the water with a high mineral content which is formed by the percolation of water through deposits of mineral rocks like limestone. Hard water contains chemical ions like bicarbonates, carbonates, and sulfates of calcium and magnesium. Some hard water might also contain iron oxides or iron carbonates resulting in … Read more
Elements Definition Elements are pure substances that consist of a single type of atoms and cannot be broken down into smaller units by chemical means. Elements are basic chemical species that combine with other elements to form complex species like compounds and molecules. Elements are defined by the number of protons in the nucleus, which … Read more
Atomic Mass Definition Atomic mass is the mass of an atom or an isotope which includes the total mass of the nucleus and the electrons present in the periphery. Most of the contribution is made by the nucleus as it contains the heavier subatomic particles, while lesser contributions are made by the electrons and nuclear … Read more
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 the rest is occupied by … Read more
Solute Definition A solute is a substance that is added to a solvent to form a solution. The solute can exist in all three forms of matter as solid, liquid, or gas. In a homogenous mixture, the solute completely dissolves in another substance, and the solute is uniformly distributed throughout the solution. In a heterogeneous … Read more