Q1 Explain the following terms
(a) Neutralisation reaction (b) Precipitation reaction
(c) Corrosion (d) Rancidity
(e) Indicators (olfactory indicator) (f) Ductility
(g) Mealliability (h) Sonorous
(i) Lustre (j) Photochemical Reaction
(k) Exothermic & endothermic (l) Water of crystallisation
(m) Oxidation & Reduction reaction
Answers
Answer:
A neutralization reaction is when an acid and a base react to form water and salt and involves the combination of hydrogen ions and hydroxyl ions to generate water.
A precipitation reaction is the formation of an insoluble salt when two solutions containing soluble salts are combined. Precipitation reactions can help determine the presence of various ions in solution.
Corrosion is the destruction of material by chemical and electrochemical reaction with their environment.
The term rancidity refers to odours and flavours resulting from lipid oxidation or lipolysis (breakdown of oils chemically or by lipase into constituent fatty acids.An olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. These type of indicators are used in laboratories to check whether a given solution is a basic or an acidic solution by a process known as olfactory titration.Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral.
A oxidation-reduction reaction is a type of chemical reaction that involves a transfer of electrons between two species.
Neutralisation reaction-In chemistry, neutralization or neutralisation is a chemical reaction in which acid and a base react quantitatively with each other. In a reaction in water, neutralization results in there being no excess of hydrogen or hydroxide ions present in the solution.
Precipitation reaction-A precipitation reaction refers to the formation of an insoluble salt when two solutions containing soluble salts are combined. The insoluble salt that falls out of solution is known as the precipitate, hence the reaction's name. Precipitation reactions can help determine the presence of various ions in solution.
corrosion-Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually a metal) by chemical and/or electrochemical reaction with their environment.
Rancidity-Rancidity is a very general term and in its most general meaning, it refers to the spoilage of a food in such a way that it becomes undesirable (and usually unsafe) for consumption. When people say that a food has "gone bad," what they're usually talking about is rancidity.
indicators-An Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. Olfactory indicators can be used in the laboratory to test whether a solution is a base or an acid, a process called olfactory titration.
Ductility-Ductility is when a solid material stretches under tensile strain. If ductile, a material may be stretched into a wire. Malleability, a similar property, is a material's ability to deform under pressure (compressive stress). If malleable, a material may be flattened by hammering or rolling
Malleability- is a physical property of metals that defines their ability to be hammered, pressed, or rolled into thin sheets without breaking. In other words, it is the property of a metal to deform under compression and take on a new shape