substance and mixture

Oxidation and Reduction Oxidation often occurs all around us. For example, a sliced apple turns brown after sometime and peeled potatoes also…

Solution A solution is a homogenous mixture of two or more components in which particle size is generally less than 1 nm.…

What is Equilibrium Equilibrium generally refers to a state in which the changes in the system and surroundings are not visible. To…

What is matter | States of Matter | Classification of Matter Matter is anything that has mass and occupies space such as…

Stoichiometry It is a part of chemistry that involves the study of quantities of substances (reactants or products or both) that take…

What is pH pH is a quantitative measure of the acidity or basicity of an aqueous solution. It refers to the negative…

Strong Acids Acid is a substance that contains hydrogen and can donate a proton (hydrogen ion) to another substance. So, how strong…

What is valency The number of electrons gained or lost by an atom to complete its outermost shell is known as valency.…

pH pH value is used to measure the acidic or basic nature of aqueous or other liquid solutions. It is a frequently…

Structure of Atom | Atomic Structure | Atomic Models Atoms are the building blocks of matter. They are the smallest units of…