Category: Ch 2 – Is Matter Around Us Pure?

Tyndall effect is the scattering of light by particles in a colloid or else particles in a very fine suspension. e.g.It can be observed when sunlight passes through the canopy of a dense forest. Dispersed phase The solute-like component of the dispersed particles in a colloid form the dispersed phase. Dispersion medium The component in which the… Continue reading Tyndall Effect

Unsaturated solutions, on the other hand, are those that contain less solute than the maximum that can be dissolved. A saturated solution is one that contains the maximum quantity of solute that can be dissolved. The amount of a solute that dissolves in a solvent is known as its solubility. The majority of solutes become… Continue reading Solubility

Solutions and their properties Anything dissolved in a solution is referred to as a solute. In a fluid solution, the amount of solvent always outweighs the amount of solute. Two of the most prevalent solutes in our daily lives are salt and water. Salt is the solute because it dissolves in water. Examples of solute… Continue reading Solutions

The nature of the substance, the particles that make up it, and the quantity of particles all stay unaltered after a physical change. Chemical changes result in new compounds with different properties from the original ones, as well as new particles and maybe altered particle numbers. Physical and chemical changes A substance is said to… Continue reading Physical vs Chemical Changes

A mixture in chemistry is a substance made up of two or more unrelated chemical components. A mixture is a physical combination of two or more distinct substances that can take the form of solutions, suspensions, or colloids. Crude oil: A mixture of organic compounds (mainly hydrocarbons) Seawater: A mixture of various salt and water.… Continue reading Mixtures And Its Types

Elements are species of atoms which have the same number of protons in their atomic nuclei. Elements are represented by symbols e.g.Hydrogen (H), Boron (B), Carbon (C), Silicon (Si) etc. Metals Metal is a solid material which is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity. Examples: Aluminium, Copper, Iron, Tin, Gold Nonmetals Non-metals are… Continue reading Elements

Compounds are the substances consisting of two or more different types of elements in a fixed ratio of its atoms. Difference between mixtures and compounds Compound Mixture Compounds are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances. Compounds fall… Continue reading Compounds

Pure substances Pure substances are elements or compounds. They are made up of only one kind of entity. They cannot be broken down into simpler entities by chemical or physical methods. They have a fixed composition. Example: Diamond, carbon dioxide. A substance that only contains one type or class of atom is said to be an… Continue reading Purity

We do know that matter is made up of particles which are arranged in a certain way. Gases particles are well separated and can freely move about, solids, on the other hand, have particles that are tightly packed, usually with no scope to move around.