The nucleus occupies a small space from the volume of the atom, It contains a number of nucleons ( protons and neutrons), Protons are positively charged & neutrons do not have a change , But...
Heat and temperature Heat is a form of energy , The flow of heat from one position to another depends on the difference in temperature between them, The atoms or molecules of substances are...
Biological macromolecules (The polymers) They are large organic compounds made up of smaller molecules (monomers) combined together by polymerization process, polymerization is a process by which monomers are combined together to form the polymer,...
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 ,...
