chemical reaction

• Chemical reaction


  A process that leads to the chemical transformation of one set of chemical substance to another which occur in the surroundings and most likely almost in everything that exists
• Reactants


  The substances that are converted to one or more different substances, the products
• Products


  The different substances created from the rearrangement of the constituent atoms of the reactants
• How chemical reactions occur

  1. Effective collision between reacting particles

  2. Orientation of particles favors creation/breaking of chemical bonds

  3. Reacting molecules possess minimum activation energy
• The Law of Conservation of Mass states that mass is neither created nor destroyed in chemical reactions
• Combination/Synthesis reaction


  A reaction in which two or more substances combine to form a single new substance
• Reactants


  The materials in a chemical reaction that are found at the tail of the arrowhead
• Products


  The materials in a chemical reaction that are found at the head of the arrowhead
• Yield


  Symbolized by an arrow in a chemical reaction
• A balanced equation conforms to the Law of Conservation of Mass
• The number of atoms of each kind on the left side of the reaction must equal the number of atoms of each kind on the right side
• Our bodies carry out chemical reactions to store the energy from food and spend that energy
• Key chemical elements in the human body

  • Oxygen
  • Carbon
  • Hydrogen
  • Nitrogen
  • Calcium
  • Phosphorus
• These key elements form the molecules (carbohydrates, lipids, nucleic acids, proteins) that make up our cells and carry out chemical processes needed for life