When you think of chemical reactions, you make think of explosives and beakers
bursting with bubbles. Well there are many signs of chemical reactions. Such
as: color and temperature changes, bubbles forming, odors, exploding, etc. The
reason for the change of color is oxidation. Oxidation is the loss of at least
one electron when two or more substances interact. Here are some examples: leaves
turn brown, orange, and red in the autumn. Or iron turns to rust when water and
oxygen touch the metal. Also, fruit can spoil. The reason for temperature is in an endothermic reaction, it takes more energy to break the bonds of the
reactants than is released when the bonds in the products are formed. In an
endothermic reaction, the temperature goes down. Gases form when some chemicals
are mixed and the “bubbles” float to
the top and sometimes flow over the container. That is my reasoning for what
really happens in a chemical reaction.