Chemical Reaction

• Chemical Reactions - occur chemical bonds between when atoms are formed or broken.
• reactants - The substances that go into a chemical reaction
• products - the substances that are produced at the end of the reaction
• Indicators:

  • Color Change
  • Temperature Change
  • Production of Light
  • Volume Change
  • Change in Smell or Taste
  • Gas bubbles appear
  • Formation of a precipitate
• CHEMICAL REACTION - a process that rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
• CHEMICAL EQUATION - Chemical equations make use of symbols to represent factors such as the direction of the reaction and the physical states of the reacting entities.
• A chemical reaction can be represented using a chemical equation.
• Reactants - are substances initially present in a chemical reaction that are consumed during the reaction to make products.
• Products - a product is a substance that is formed as the result of a chemical reaction.
• There are six categories in which you can classify chemical reactions:

  1. Synthesis/Combination Reaction
  2. Decomposition
  3. Combustion
  4. Single replacement
  5. Double replacement
  6. Acid-base
• SYNTHESIS REACTION - two or more substances combine to form a new single substance.
• DECOMPOSITION - A single reactant breaks down to form 2 or more products.
• COMBUSTION - Oxygen gas reacts with another substance, which releases energy in the form of light and heat.
• SINGLE REPLACEMENT REACTION - One element replaces a similar element in a compound
• ACID-BASE - It is a reaction wherein acids and bases react with each other to form ionic salt and water.
• DOUBLE REPLACEMENT REACTION - two reactants exchange ions, forming a new compound