Chemical Reaction

• Chemical equation is chemist's shorthand for chemical reaction.
• Reactants are the start of the reaction and are written on the left side of the reaction arrow.
• Products are the end of the reaction and are written on the right side of the reaction arrow.
• Reaction arrow tells which direction the chemical reaction proceeds.
• Catalyst is a substance that speeds up a chemical reaction but not consumed by reaction.

  Inhibitor slows downs or inhibits the chemical reaction.
• Coefficients are used in front of the chemical formula to help balance the numbers of atoms.
• Subscripts follow the element symbol in chemical formula, indicating how many atoms of the element are in a compound.
• Chemical reactions occur when chemical bonds between atoms are formed or broken.