Write the definitions for;
a) Chemical reaction
b) Chemical bond
c)Photochemical reaction
d) Activity series
Answers
Answer:
a)chemical reaction:-
a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
b)chemical bond :-a connection between two surfaces or objects that have been joined together, especially by means of an adhesive substance, heat, or pressure.
c) photochemical reaction:-Refers to any chemical reaction which occurs as a result of light energy from the sun. For example, ozone is formed through a photochemical reaction involving nitrogen dioxide and reactive organic compounds.
d) Activity series':-
reactivity series (or activity series) is an empirical, calculated, and structurally analytical progression of a series of metals, arranged by their "reactivity" from highest to lowest.
Answer:
a) The transformation of chemical substances into a new chemical substance by making and breaking of bonds between different atoms is known as chemical reaction.
b) any of the interactions that account for the association of atoms into molecules,irons,crystals,and other stable species that make up the familier substances of the everyday world
c) a chemical reaction initiated by the absorption of energy in the form of light. The consequence of molecules absorbing light is the creation of transient excited states whose chemical and physical properties differ greatly from the original molecules.
d) a activity series is an empirical ,calculated and analytical progression of a metals arranged by their reactivity from highest to lowest.