Chemical Reaction

Chemical Reaction

1. Process that occurs when a substance or substances react to form a different substance or substances

   • Always involve the production of new substances with their own physical and chemical properties
     • Energy is always absorbed or released during a chemical reaction
       • Recognizing Chemical Reactions
         • All reactions involve the production of new substances with their own characteristic properties.
           • These properties include: State at Room Temperature, melting point, color, and density.
         • All reactions involve the flow of energy. This may be detected by a change in temperature.
         • Many reactions cause a phase change.
           • E.g. the formation of a gas (bubbles) or of a solid that appears as a cloudiness in a previously clear solution.