Nuclear reactions are different from the chemical reactions , Since chemical reactions occur between the atoms of the reactant elements by the binding between the electrons of the outermost energy levels & no change...
Exothermic and Endothermic reactions When heat transfers from the system to the surrounding , the internal energy of the system decreases and this process is called Exothermic process , When heat transfers from the...
Chemical equation It is a group of chemical symbols and formulas of the reactants and products which are connected by an arrow that expresses the direction of this reaction and carries its conditions ,...
Science is an organized structure of knowledge that includes the facts, concepts, principles, laws, scientific theories and the organized method in the research & investigation, One of the main branches of science is the...
The chemical reaction speed is the change in the concentration and the resultants in a unit time, The chemical reactions differ in the time that they take to occur, At the end of the...
